TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 1 Introduction * * 1.1 Features * * * * * * * * * * * * * * Stereo Audio DAC with 100dB SNR 4.1mW Stereo 48ksps DAC Playback Stereo Audio ADC with 93dB SNR 6.1mW Stereo 48ksps ADC Record PowerTuneTM Extensive Signal Processing Options Six Single-Ended or 3 Fully-Differential Analog Inputs Stereo Analog and Digital Microphone Inputs Stereo Headphone Outputs Stereo Line Outputs Very Low-Noise PGA Low Power Analog Bypass Mode Programmable Microphone Bias Programmable PLL Integrated LDO 5 mm x 5 mm 32-pin QFN Package 1.2 * * * * * Applications Portable Navigation Devices (PND) Portable Media Player (PMP) Mobile Handsets Communication Portable Computing 1.3 Description The TLV320AIC3204 (sometimes referred to as the AIC3204) is a flexible, low-power, low-voltage stereo audio codec with programmable inputs and outputs, PowerTune capabilities, fixed predefined and parameterizable signal processing blocks, integrated PLL, integrated LDOs and flexible digital interfaces. IN1_L IN2_L IN3_L 0...+47.5 dB + Left ADC tpl + DRC ADC Signal Proc. DAC Signal Proc. Vol. Ctrl -72...0dB Left DAC -6...+29dB HPL + 1dB steps Gain Adj. 0.5 dB steps CM AGC -6...+29dB -30...0 dB LOL + 1dB steps Data Interface -6...+29dB -30...0 dB LOR + CM 1dB steps 0... +47.5 dB + Gain Adj. Right ADC IN3_R + tpr 0.5 dB steps IN2_R ADC Signal Proc. DAC Signal Proc. AGC DRC -6...+29dB Right DAC Vol. Ctrl HPR + 1dB steps -72...0dB IN1_R SPI_Select SPI / I2C Control Block Reset Digital Interrupt Secondary Mic. Ctrl I2S IF PLL Primary I2S Interface HPVdd MicBias Mic Bias ALDO Ref Ref DLDO Supplies Pin Muxing / Clock Routing BCLK WCLK DIN DOUT GPIO MCLK SCLK MISO SDA/MOSI SCL/SSZ IOVss DVss AVss IOVdd DVdd AVdd LDO Select LDO in Figure 1-1. Simplified Block Diagram Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this document. PowerTune is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 2008-2008, Texas Instruments Incorporated TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 1.4 www.ti.com Detailed Description Extensive Register based control of power, input/output channel configuration, gains, effects, pin-multiplexing and clocks is included, allowing the device to be precisely targeted to its application. Combined with the advanced PowerTune technology, the device can cover operations from 8 kHz mono voice playback to audio stereo 192kHz DAC playback, making it ideal for portable battery-powered audio and telephony applications. The record path of the TLV320AIC3204 covers operations from 8kHz mono to 192kHz stereo recording, and contains programmable input channel configurations covering single-ended and differential setups, as well as floating or mixing input signals. It also includes a digitally-controlled stereo microphone preamplifier and integrated microphone bias. Digital signal processing blocks can remove audible noise that may be introduced by mechanical coupling, e.g. optical zooming in a digital camera. The playback path offers signal-processing blocks for filtering and effects, and supports flexible mixing of DAC and analog input signals as well as programmable volume controls. The playback path contains two high-power output drivers as well as two fully-differential outputs. The high-power outputs can be configured in multiple ways, including stereo and mono BTL. The integrated PowerTune technology allows the device to be tuned to just the right power-performance trade-off. Mobile applications frequently have multiple use cases requiring very low power operation while being used in a mobile environment. When used in a docked environment power consumption typically is less of a concern, while minimizing noise is important. With PowerTune, the TLV320AIC3204 addresses both cases. The voltage supply range for the TLV320AIC3204 for analog is 1.5V-1.95V, and for digital it is 1.26V-1.95V. To ease system-level design, LDOs are integrated to generate the appropriate analog or digital supply from input voltages ranging from 1.8V to 3.6V. Digital I/O voltages are supported in the range of 1.1V-3.6V. The required internal clock of the TLV320AIC3204 can be derived from multiple sources, including the MCLK pin, the BCLK pin, the GPIO pin or the output of the internal PLL, where the input to the PLL again can be derived from the MCLK pin, the BCLK or GPIO pins. Although using the PLL ensures the availability of a suitable clock signal, it is not recommended for the lowest power settings. The PLL is highly programmable and can accept available input clocks in the range of 512kHz to 50MHz. The device is available in the 5-mm x 5-mm, 32-pin QFN package. 2 Introduction Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 2 Package and Signal Descriptions 2.1 Packaging/Ordering Information PRODUCT PACKAGE PACKAGE DESIGNATOR OPERATING TEMPERATURE RANGE TLV320AIC3204 QFN RHB -40C to 85C ORDERING NUMBER TRANSPORT MEDIA, QUANTITY TLV320AIC3204IRHBT Tape and Reel, 250 TLV320AIC3204IRHBR Tape and Reel, 3000 8 1 GPIO/MFP5 (32) SCLK/MFP3 IOVSS OVIDD DIN/MFP1 DOUT/MFP2 WCLK BCLK MCLK (1) 2.2 Pin Assignments 32 9 SCL/SSZ SDA/MOSI RESET LDO_SELECT MISO/MFP4 DVDD SPI_SELECT DVSS IN1_L HPR IN1_R LDOIN IN2_L HPL 25 16 24 IN2_R 17 AVSS MICBIAS REF IN3_L IN3_R LOR LOL AVDD Figure 2-1. QFN (RHB) Package, Bottom View Submit Documentation Feedback Package and Signal Descriptions 3 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Table 2-1. TERMINAL FUNCTIONS TERMINAL NAME TYPE 1 MCLK I DESCRIPTION 2 BCLK IO Audio serial data bus (primary) bit clock 3 WCLK IO Audio serial data bus (primary) word clock 4 DIN I Master Clock Input Primary function Audio serial data bus data input MFP1 Secondary function Audio serial data bus (secondary) bit clock input Audio serial data bus (secondary) word clock input Digital Microphone Input Clock Input General Purpose Input 5 DOUT O Primary Audio serial data bus data output MFP2 Secondary General Purpose Output Clock Output INT1 Output INT2 Output Audio serial data bus (secondary) bit clock output Audio serial data bus (secondary) word clock output 6 IOVDD Power I/O voltage supply 1.1V - 3.6V 7 IOVSS Ground I/O ground supply 8 SCLK I Primary (SPI_Select = 1) SPI serial clock MFP3 Secondary: (SPI_Select = 0) Headset-detect input Digital microphone input Audio serial data bus (secondary) Audio serial data bus (secondary) Audio serial data bus (secondary) Audio serial data bus (secondary) General Purpose Input bit clock input DAC/common word clock input ADC word clock input data input 9 SCL/ SSZ I I2C interface serial clock (SPI_Select = 0) SPI interface mode chip-select signal (SPI_Select = 1) 10 SDA/ MOSI I I2C interface mode serial data input (SPI_Select = 0) SPI interface mode serial data input (SPI_Select = 1) 11 MISO O Primary (SPI_Select = 1) Serial data output MFP4 Secondary (SPI_Select = 0) General purpose output CLKOUT output INT1 output INT2 output Audio serial data bus (primary) ADC word clock output Digital microphone clock output Audio serial data bus (secondary) data output Audio serial data bus (secondary) bit clock output Audio serial data bus (secondary) word clock output 12 4 SPI_ SELECT Package and Signal Descriptions I Control mode select pin ( 1 = SPI, 0 = I2C ) Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Table 2-1. TERMINAL FUNCTIONS (continued) TERMINAL NAME TYPE 13 IN1_L I Multifunction Analog Input, or Single-ended configuration: MIC 1 or Line 1 left or Differential configuration: MIC or Line right, negative 14 IN1_R I Multifunction Analog Input, or Single-ended configuration: MIC 1 or Line 1 right or Differential configuration: MIC or Line right, positive 15 IN2_L I Multifunction Analog Input, or Single-ended configuration: MIC 2 or Line 2 right or Differential configuration: MIC or Line left, positive 16 IN2_R I Multifunction Analog Input, or Single-ended configuration: MIC 2 or Line 2 right or Differential configuration: MIC or Line left, negative 17 AVss Ground 18 REF O Reference voltage output for filtering 19 MICBIAS O Microphone bias voltage output 20 IN3_L I Multifunction Analog Input, or Single-ended configuration: MIC3 or Line 3 left, or Differential configuration: MIC or Line left, positive, or Differential configuration: MIC or Line right, negative 21 IN3_R I Multifunction Analog Input, or Single-ended configuration: MIC3 or Line 3 right, or Differential configuration: MIC or Line left, negative, or Differential configuration: MIC or Line right, positive 22 LOL O Left line output Right line output 23 LOR O 24 AVdd Power DESCRIPTION Analog ground supply Analog voltage supply 1.5V-1.95V Input when A-LDO disabled, Filtering output when A-LDO enabled 25 HPL O 26 LDOIN/ HPVDD Power Left high power output driver 27 HPR O 28 DVss Ground Digital Ground and Chip-substrate 29 DVdd Power If LDO_SELECT Pin = 0 (D-LDO disabled) LDO Input supply and Headphone Power supply 1.9V- 3.6V Right high power output driver Digital voltage supply 1.26V - 1.95V If LDO_SELECT Pin = 1 (D-LDO enabled) Digital voltage supply filtering output 30 LDO_ SELECT I connect to DVss. 31 RESET I Reset (active low) 32 GPIO I Primary General Purpose digital IO MFP5 Secondary CLKOUT Output INT1 Output INT2 Output Audio serial data bus ADC word clock output Audio serial data bus (secondary) bit clock output Audio serial data bus (secondary) word clock output Digital microphone clock output Submit Documentation Feedback Package and Signal Descriptions 5 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 3 Electrical Specifications 3.1 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) VALUE UNIT AVdd to AVss -0.3 to 2.2 V DVdd to DVss -0.3 to 2.2 V IOVDD to IOVSS -0.3 to 3.9 V LDOIN to AVss -0.3 to 3.9 V Digital Input voltage to ground -0.3 to IOVDD + 0.3 V Analog input voltage to ground -0.3 to AVdd + 0.3 V Operating temperature range -40 to 85 C Storage temperature range -55 to 125 C 105 C Junction temperature (TJ Max) (TJ Max - TA)/ JA W JA Thermal impedance 35 C/W Infrared (15 sec) 260 C Power dissipation (with thermal pad soldered to board) Lead Temperature (1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 3.2 RECOMMENDED OPERATING CONDITIONS MIN LDOIN Power Supply Voltage Range Referenced to AVss (1) AVdd 1.5 Referenced to IOVSS (1) IOVDD DVdd (2) Referenced to DVss PLL Input Frequency MCLK Master Clock Frequency SCL SCL Clock Frequency LOL, LOR Stereo line output load resistance HPL, HPR Stereo headphone output load resistance Headphone output load resistance CLout Digital output load capacitance TOPR Operating Temperature Range (1) (2) 6 (1) NOM 1.9 1.8 1.1 1.26 1.8 MAX UNIT 3.6 V 1.95 V 3.6 V 1.95 V Clock divider uses fractional divide (D > 0), P=1, DVdd 1.65V (Refer to Table 5-23) 10 20 MHz Clock divider uses integer divide (D = 0), P=1, DVdd 1.65V (Refer to Table 5-23) 0.512 20 MHz MCLK; Master Clock Frequency; DVdd 1.65V 50 MHz MCLK; Master Clock Frequency; DVdd 1.26V 25 400 kHz 0.6 10 k Single-ended configuration 14.4 16 Differential configuration 24.4 32 10 pF -40 85 C All grounds on board are tied together, so they should not differ in voltage by more than 0.2V max, for any combination of ground signals. At DVdd values lower than 1.65V, the PLL does not function. Please see Table 5-23 for details on maximum clock frequencies. Electrical Specifications Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com 3.3 SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 ELECTRICAL CHARACTERISTICS At 25C, AVdd, DVdd, IOVDD = +1.8V, LDO_in = 3.3V, AVdd LDO disabled, fs (Audio) = 48kHz, Cref = 10 F on REF PIN, PLL disabled unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO ADC (1) (2) Input signal level (0dB) Single-ended, CM = 0.9V Device Setup 1kHz sine wave input Single-ended Configuration IN1R to Right ADC and IN1L to Left ADC, Rin = 20K, fs = 48kHz, AOSR = 128, MCLK = 256*fs, PLL Disabled; AGC = OFF, Channel Gain = 0dB, Processing Block = PRB_R1, Power Tune = PTM_R4 Inputs ac-shorted to ground SNR Signal-to-noise ratio, A-weighted (1) DR Dynamic range A-weighted (1) THD+N (2) (2) Total Harmonic Distortion plus Noise IN2R, IN3R routed to Right ADC and ac-shorted to ground IN2L, IN3L routed to Left ADC and ac-shorted to ground 0.5 80 VRMS 93 93 -60dB full-scale, 1-kHz input signal 92 -3 dB full-scale, 1-kHz input signal -85 IN2R,IN3R routed to Right ADC IN2L, IN3L routed to Left ADC -3dB full-scale, 1-kHz input signal -85 dB dB -70 dB AUDIO ADC SNR Input signal level (0dB) Single-ended, CM=0.75V, AVdd = 1.5V Device Setup 1kHz sine wave input Single-ended Configuration IN1R, IN2R, IN3R routed to Right ADC IN1L, IN2L, IN3L routed to Left ADC Rin = 20K, fs = 48kHz, AOSR=128, MCLK = 256* fs, PLL Disabled, AGC = OFF, Channel Gain = 0dB, Processing Block = PRB_R1 Power Tune = PTM_R4 Signal-to-noise ratio, A-weighted (1) (2) (1) (2) DR Dynamic range A-weighted THD+N Total Harmonic Distortion plus Noise 0.375 VRMS Inputs ac-shorted to ground 91 dB -60dB full-scale, 1-kHz input signal 90 dB -3dB full-scale, 1-kHz input signal -80 dB 10 mV 2 VRMS AUDIO ADC ICN (1) (2) Input signal level (0dB) Differential Input, CM=0.9V Device Setup 1kHz sine wave input Differential configuration IN1L and IN1R routed to Right ADC IN2L and IN2R routed to Left ADC Rin =10K, fs =48kHz, AOSR=128 MCLK = 256* fs PLL Disabled AGC = OFF, Channel Gain=40dB Processing Block = PRB_R1, Power Tune = PTM_R4 Idle-Channel Noise, A-weighted (1) (2) Inputs ac-shorted to ground, input referred noise Ratio of output level with 1-kHz full-scale sine wave input, to the output level with the inputs short circuited, measured A-weighted over a 20-Hz to 20-kHz bandwidth using an audio analyzer. All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-band noise, which, although not audible, may affect dynamic specification values Submit Documentation Feedback Electrical Specifications 7 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com ELECTRICAL CHARACTERISTICS (continued) At 25C, AVdd, DVdd, IOVDD = +1.8V, LDO_in = 3.3V, AVdd LDO disabled, fs (Audio) = 48kHz, Cref = 10 F on REF PIN, PLL disabled unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO ADC Gain Error 1kHz sine wave input Single-ended configuration Rin = 20K fs = 48kHz, AOSR=128, MCLK = 256* fs, PLL Disabled AGC = OFF, Channel Gain=0dB Processing Block = PRB_R1, Power Tune = PTM_R4, CM=0.9V -0.05 dB 108 dB Input Channel Separation 1kHz sine wave input at -3dBFS Single-ended configuration IN1L routed to Left ADC IN1R routed to Right ADC, Rin = 20K AGC = OFF, AOSR = 128, Channel Gain=0dB, CM=0.9V 1kHz sine wave input at -3dBFS on IN2L, IN2L internally not routed. IN1L routed to Left ADC ac-coupled to ground 115 dB Input Pin Crosstalk 55 dB 1kHz sine wave input at -3dBFS on IN2R, IN2R internally not routed. IN1R routed to Right ADC ac-coupled to ground Single-ended configuration Rin = 20K, AOSR=128 Channel, Gain=0dB, CM=0.9V PSRR 217Hz, 100mVpp signal on AVdd, Single-ended configuration, Rin=20K, Channel Gain=0dB; CM=0.9V Single-Ended, Rin = 10K, PGA gain set to 0dB 0 dB 47.5 dB -6 dB Single-Ended, Rin = 20K, PGA gain set to 47.5dB 41.5 dB Single-Ended, Rin = 40K, PGA gain set to 0dB -12 dB Single-Ended, Rin = 40K, PGA gain set to 47.5dB 35.5 dB 0.5 dB Single-Ended, Rin = 10K, PGA gain set to 47.5dB ADC programmable gain amplifier gain ADC programmable gain amplifier step size 8 Electrical Specifications Single-Ended, Rin = 20K, PGA gain set to 0dB 1-kHz tone Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 ELECTRICAL CHARACTERISTICS (continued) At 25C, AVdd, DVdd, IOVDD = +1.8V, LDO_in = 3.3V, AVdd LDO disabled, fs (Audio) = 48kHz, Cref = 10 F on REF PIN, PLL disabled unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG BYPASS TO HEADPHONE AMPLIFIER, DIRECT MODE Device Setup Load = 16 (single-ended), 50pF; Input and Output CM=0.9V; Headphone Output on LDOIN Supply; IN1L routed to HPL and IN1R routed to HPR; Channel Gain=0dB Gain Error THD -0.8 Noise, A-weighted (1) Idle Channel, IN1L and IN1R ac-shorted to ground Total Harmonic Distortion 446mVrms, 1-kHz input signal 3 dB VRMS -89 dB ANALOG BYPASS TO LINE-OUT AMPLIFIER, PGA MODE Device Setup Load = 10KOhm (single-ended), 56pF; Input and Output CM=0.9V; LINE Output on LDOIN Supply; IN1L routed to ADCPGA_L and IN1R routed to ADCPGA_R; Rin = 20k ADCPGA_L routed to LOL and ADCPGA_R routed to LOR; Channel Gain = 0dB Gain Error 0.6 Idle Channel, IN1L and IN1R ac-shorted to ground Noise, A-weighted (1) Channel Gain=40dB, Input Signal (0dB) = 5mVrms Inputs ac-shorted to ground, Input Referred dB 7 VRMS 3.4 VRMS 1.25 V 1.7 V MICROPHONE BIAS Bias voltage Bias voltage CM=0.9V, LDOin = 3.3V Micbias Mode 0, Connect to AVdd or LDOin Micbias Mode 1, Connect to LDOin Micbias Mode 2, Connect to LDOin 2.5 V Micbias Mode 3, Connect to AVdd AVdd V Micbias Mode 3, Connect to LDOin LDOin V Micbias Mode 0, Connect to AVdd or LDOin 1.04 V Micbias Mode 1, Connect to AVdd or LDOin 1.425 V Micbias Mode 2, Connect to LDOin 2.075 V Micbias Mode 3, Connect to AVdd AVdd V Micbias Mode 3, Connect to LDOin LDOin V CM=0.75V, LDOin = 3.3V Output Noise CM=0.9V, Micbias Mode 2, A-weighted, 20Hz to 20kHz bandwidth, Current load = 0mA. Current Sourcing Micbias Mode 2, Connect to LDOin Inline Resistance (1) 10 VRMS 3 Micbias Mode 3, Connect to AVdd 140 Micbias Mode 3, Connect to LDOin 87 mA All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-band noise, which, although not audible, may affect dynamic specification values Submit Documentation Feedback Electrical Specifications 9 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com ELECTRICAL CHARACTERISTICS (continued) At 25C, AVdd, DVdd, IOVDD = +1.8V, LDO_in = 3.3V, AVdd LDO disabled, fs (Audio) = 48kHz, Cref = 10 F on REF PIN, PLL disabled unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 0.5 VRMS 87 100 dB -60dB 1kHz input full-scale signal, Word length=20 bits 100 dB AUDIO DAC - STEREO SINGLE-ENDED LINE OUTPUT Load = 10 k (single-ended), 56pF Line Output on AVdd Supply Input & Output CM=0.9V DOSR = 128, MCLK=256* fs, Channel Gain = 0dB, word length = 16 bits, Processing Block = PRB_P1, Power Tune = PTM_P3 Device Setup Full scale output voltage (0dB) SNR Signal-to-noise ratio A-weighted (1) (2) DR Dynamic range, A-weighted THD+N Total Harmonic Distortion plus Noise -3dB full-scale, 1-kHz input signal -83 DAC Gain Error 0 dB, 1kHz input full scale signal 0.3 dB DAC Mute Attenuation Mute 119 dB DAC channel separation -1 dB, 1kHz signal, between left and right HP out 113 dB 100mVpp, 1kHz signal applied to AVdd 73 dB 100mVpp, 217Hz signal applied to AVdd 77 dB (1) (2) DAC PSRR All zeros fed to DAC input -70 dB AUDIO DAC - STEREO SINGLE-ENDED LINE OUTPUT Load = 10 k (single-ended), 56pF Line Output on AVdd Supply Input & Output CM=0.75V; AVdd=1.5V DOSR = 128 MCLK=256* fs Channel Gain = -2dB word length = 20-bits Processing Block = PRB_P1 Power Tune = PTM_P4 Device Setup Full scale output voltage (0dB) 0.375 (1) (2) SNR Signal-to-noise ratio, A-weighted DR Dynamic range, A-weighted THD+N Total Harmonic Distortion plus Noise (1) (2) VRMS All zeros fed to DAC input 99 dB -60dB 1 kHz input full-scale signal 97 dB -1 dB full-scale, 1-kHz input signal -85 dB AUDIO DAC - STEREO SINGLE-ENDED HEADPHONE OUTPUT Load = 16 (single-ended), 50pF Headphone Output on AVdd Supply, Input & Output CM=0.9V, DOSR = 128, MCLK=256* fs, Channel Gain=0dB word length = 16 bits; Processing Block = PRB_P1 Power Tune = PTM_P3 Device Setup Full scale output voltage (0dB) 0.5 VRMS dB 99 dB Signal-to-noise ratio, A-weighted (1) DR Dynamic range, A-weighted THD+N Total Harmonic Distortion plus Noise -3dB full-scale, 1-kHz input signal -83 DAC Gain Error 0dB, 1kHz input full scale signal -0.3 dB DAC Mute Attenuation Mute 122 dB DAC channel separation -1dB, 1kHz signal, between left and right HP out 110 dB 100mVpp, 1kHz signal applied to AVdd 73 dB 100mVpp, 217Hz signal applied to AVdd 78 dB DAC PSRR (1) (2) 10 (2) 100 SNR (1) (2) All zeros fed to DAC input -60dB 1kHz input full-scale signal, Word Length = 20 bits, Power Tune = PTM_P4 87 -70 dB Ratio of output level with 1-kHz full-scale sine wave input, to the output level with the inputs short circuited, measured A-weighted over a 20-Hz to 20-kHz bandwidth using an audio analyzer. All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-band noise, which, although not audible, may affect dynamic specification values Electrical Specifications Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 ELECTRICAL CHARACTERISTICS (continued) At 25C, AVdd, DVdd, IOVDD = +1.8V, LDO_in = 3.3V, AVdd LDO disabled, fs (Audio) = 48kHz, Cref = 10 F on REF PIN, PLL disabled unless otherwise noted. PARAMETER TEST CONDITIONS Power Delivered MIN TYP RL=16, Output Stage on AVdd = 1.8V THDN < 1%, Input CM=0.9V, Output CM=0.9V 15 RL=16 Output Stage on LDOIN = 3.3V, THDN < 1% Input CM=0.9V, Output CM=1.65V 64 MAX UNIT mW AUDIO DAC - STEREO SINGLE-ENDED HEADPHONE OUTPUT Load = 16 (single-ended), 50pF, Headphone Output on AVdd Supply, Input & Output CM=0.75V; AVdd=1.5V, DOSR = 128, MCLK=256* fs, Channel Gain = -2dB, word length=20-bits; Processing Block = PRB_P1, Power Tune = PTM_P4 Device Setup Full scale output voltage (0dB) 0.375 SNR Signal-to-noise ratio, A-weighted (1) (2) DR Dynamic range, A-weighted THD+N Total Harmonic Distortion plus Noise (1) (2) VRMS All zeros fed to DAC input 99 dB -60dB 1 kHz input full-scale signal 98 dB -1dB full-scale, 1-kHz input signal -83 dB 1778 mVRMS AUDIO DAC - MONO DIFFERENTIAL HEADPHONE OUTPUT Load = 32 (differential), 50pF, Headphone Output on LDOIN Supply Input CM = 0.75V, Output CM=1.5V, AVdd=1.8V, LDOIN=3.0V, DOSR = 128 MCLK=256* fs, Channel (headphone driver) Gain = 5dB for full scale output signal, word length=16-bits, Processing Block = PRB_P1, Power Tune = PTM_P3 Device Setup Full scale output voltage (0dB) SNR Signal-to-noise ratio, A-weighted (1) DR Dynamic range, A-weighted THD Total Harmonic Distortion (2) All zeros fed to DAC input 98 dB -60dB 1kHz input full-scale signal 96 dB -3dB full-scale, 1-kHz input signal -82 dB RL=32, Output Stage on LDOIN = 3.3V, THDN < 1%, Input CM=0.9V, Output CM=1.65V 136 mW RL=32 Output Stage on LDOIN = 3.0V, THDN < 1% Input CM=0.9V, Output CM=1.5V 114 mW LDOMode = 1, LDOin > 1.95V 1.67 LDOMode = 0, LDOin > 2.0V 1.72 LDOMode = 2, LDOin > 2.05V 1.77 2 % Load Regulation Load current range 0 to 50mA 15 mV Line Regulation Input Supply Range 1.9V to 3.6V 5 mV 60 A LDOMode = 1, LDOin > 1.95V 1.67 V LDOMode = 0, LDOin > 2.0V 1.72 LDOMode = 2, LDOin > 2.05V 1.77 2 % Load Regulation Load current range 0 to 50mA 15 mV Line Regulation Input Supply Range 1.9V to 3.6V 5 mV 60 A (1) (2) Power Delivered LOW DROPOUT REGULATOR (AVdd) Output Voltage Output Voltage Accuracy Decoupling Capacitor F 1 Bias Current V LOW DROPOUT REGULATOR (DVdd) Output Voltage Output Voltage Accuracy Decoupling Capacitor Bias Current Submit Documentation Feedback F 1 Electrical Specifications 11 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com ELECTRICAL CHARACTERISTICS (continued) At 25C, AVdd, DVdd, IOVDD = +1.8V, LDO_in = 3.3V, AVdd LDO disabled, fs (Audio) = 48kHz, Cref = 10 F on REF PIN, PLL disabled unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT REFERENCE Reference Voltage Settings Reference Noise CMMode = 0 (0.9V) 0.9 CMMode = 1 (0.75V) 0.75 CM=0.9V, A-weighted, 20Hz to 20kHz bandwidth, Cref = 10F V VRMS 1 10 F 120 A I(DVdd) 0.9 A I(AVdd) <0.9 A I(LDOin) <0.9 A 13 nA Decoupling Capacitor 1 Bias Current Shutdown Current Coarse AVdd supply turned off LDO_select held at ground No external digital input is toggled. Device Setup I(IOVDD) 3.4 ELECTRICAL CHARACTERISTICS At 25C, AVdd, DVdd, IOVDD = 1.8V PARAMETER TEST CONDITIONS MIN LOGIC FAMILY VIH Logic Level VIL TYP MAX IIH = 5 A, IOVDD > 1.6V 0.7 x IOVDD V IIH = 5A, 1.2V IOVDD <1.6V 0.9 x IOVDD V IIH = 5A, IOVDD < 1.2V IOVDD IIL = 5 A, IOVDD > 1.6V -0.3 V IIL = 5A, 1.2V IOVDD <1.6V 0.3 x IOVDD V 0.1 x IOVDD V 0 V IIL = 5A, IOVDD < 1.2V VOH IOH = 2 TTL loads VOL IOL = 2 TTL loads 0.8 x IOVDD V 0.1 x IOVDD Capacitive Load 3.4.1 UNIT CMOS 10 V pF TIMING -- AUDIO DATA SERIAL INTERFACE TIMING All numbers are from characterization and are not tested in final production. WCLK td(WS) BCLK td(DO-WS) td(DO-BCLK) DOUT tS(DI) th(DI) DIN I2S/LJF Timing in Master Mode Figure 3-1. I2S/LJF/RJF Timing in Master Mode 12 Electrical Specifications Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 All numbers are from characterization and are not tested in final production. 3.4.2 TYPICAL TIMING CHARACTERISTICS (see Figure 3-1) All specifications at 25C, DVdd = 1.8V Table 3-1. I2S/LJF/RJF Timing in Master Mode PARAMETER IOVDD=1.8V MIN IOVDD=3.3V MAX MIN UNITS MAX td(WS) WCLK delay 30 20 ns td (DO-WS) WCLK to DOUT delay (For LJF Mode only) 20 20 ns td (DO-BCLK) BCLK to DOUT delay 22 20 ns ts(DI) DIN setup 8 8 th(DI) DIN hold 8 8 tr Rise time 24 12 ns tf Fall time 24 12 ns ns ns Note: All timing specifications are measured at characterization but not tested at final test. WCLK td (WS) td(DO-BCLK) td (DO-WS) BCLK DOUT th (DI) ts (DI) DIN I2S/LJF/RJF Timing in Master Mode Figure 3-2. I2S/LJF/RJF Timing in Slave Mode 3.4.3 TYPICAL TIMING CHARACTERISTICS (see Figure 3-2) All specifications at 25C, DVdd = 1.8V Table 3-2. I2S/LJF/RJF Timing in Slave Mode PARAMETER IOVDD=1.8V MIN IOVDD=3.3V MAX MIN UNITS MAX BCLKH (BCLK) BCLK high period 35 35 BCLKL (BCLK) BCLK low period 35 35 ts (WS) WCLK setup 8 8 th (WS) WCLK hold 8 8 td (DO-WS) WCLK to DOUT delay (For LJF mode only) 20 td (DO-BCLK) BCLK to DOUT delay 22 ts(DI) DIN setup 8 th(DI) DIN hold 8 tr Rise time 4 4 tf Fall time 4 4 Submit Documentation Feedback ns 20 22 8 8 Electrical Specifications 13 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Note: All timing specifications are measured at characterization but not tested at final test. WCLK td(WS) td(WS) BCLK td(DO-BCLK) DOUT th(DI) ts(DI) DIN Figure 3-3. DSP Timing in Master Mode 3.4.3.1 TYPICAL TIMING CHARACTERISTICS (see Figure 3-3) All specifications at 25C, DVdd = 1.8V Table 3-3. DSP Timing in Master Mode PARAMETER IOVDD=1.8V MIN IOVDD=3.3V MAX MIN 30 UNITS MAX td (WS) WCLK delay td (DO-BCLK) BCLK to DOUT delay ts(DI) DIN setup 8 8 ns th(DI) DIN hold 8 8 ns tr Rise time 24 12 ns tf Fall time 24 12 ns 22 20 ns 20 ns Note: All timing specifications are measured at characterization but not tested at final test. WCLK th(ws) BCLK ts(ws) th(ws) th(ws) tL(BCLK) tH(BCLK) tP(BCLK) td(DO-BCLK) DOUT ts(DI) th(DI) DIN Figure 3-4. DSP Timing in Slave Mode 14 Electrical Specifications Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 3.4.3.2 TYPICAL TIMING CHARACTERISTICS (see Figure 3-4) All specifications at 25C, DVdd = 1.8V Table 3-4. DSP Timing in Slave Mode PARAMETER IOVDD=1.8V MIN IOVDD=3.3V MAX MIN UNITS MAX tH (BCLK) BCLK high period 35 35 ns tL (BCLK) BCLK low period 35 35 ns ts(WS) WCLK setup 8 8 ns th(WS) WCLK hold 8 td (DO-BCLK) BCLK to DOUT delay ts(DI) DIN setup 8 8 ns th(DI) DIN hold 8 8 ns tr Rise time 4 4 ns tf Fall time 4 4 ns 8 22 ns 22 ns Note: All timing specifications are measured at characterization but not tested at final test. 3.4.4 I2C INTERFACE TIMING Figure 3-5. Table 3-5. I2C INTERFACE TIMING PARAMETER TEST CONDITION Standard-Mode MIN Fast-Mode MAX 0 TYP UNITS MAX SCL clock frequency tHD;STA Hold time (repeated) START condition. After this period, the first clock pulse is generated. 4.0 0.8 s tLOW LOW period of the SCL clock 4.7 1.3 s tHIGH HIGH period of the SCL clock 4.0 0.6 s tSU;STA Setup time for a repeated START condition 4.7 0.8 s tHD;DAT Data hold time: For I2C bus devices tSU;DAT Data set-up time tr SDA and SCL Rise Time tf SDA and SCL Fall Time tSU;STO Set-up time for STOP condition 4.0 0.8 s tBUF Bus free time between a STOP and START condition 4.7 1.3 s Cb Capacitive load for each bus line 0 100 MIN fSCL Submit Documentation Feedback 0 TYP 400 3.45 0 1000 20+0.1Cb 300 300 20+0.1Cb 300 250 0.9 100 400 kHz s ns 400 Electrical Specifications ns ns pF 15 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 3.4.5 www.ti.com SPI INTERFACE TIMING SSZ S t t Lead t t Lag td sck SCLK t wsck tf tr t wsck tv MISO t ho MSB OUT t dis BIT 6 . . . 1 LSB OUT ta MOSI t hi t su MSB IN BIT 6 . . . 1 LSB IN Figure 3-6. SPI Interface Timing Diagram 3.4.5.1 TIMING REQUIREMENTS (SEE Figure 3-6) At 25C, DVdd = 1.8V Table 3-6. SPI Interface Timing PARAMETER TEST CONDITION IOVDD=1.8V MIN IOVDD=3.3V TYP MAX MIN TYP UNITS MAX tsck SCLK Period (1) 100 50 ns tsckh SCLK Pulse width High 50 25 ns tsckl SCLK Pulse width Low 50 25 ns tlead Enable Lead Time 30 20 ns ttrail Enable Trail Time 30 20 ns td;seqxfr Sequential Transfer Delay 40 ta Slave DOUT access time 40 20 ns tdis Slave DOUT disable time 40 20 ns tsu DIN data setup time 15 10 th;DIN DIN data hold time 15 10 tv;DOUT DOUT data valid time tr tf (1) 16 20 ns ns ns 25 18 ns SCLK Rise Time 4 4 ns SCLK Fall Time 4 4 ns These parameters are based on characterization and are not tested in production. Electrical Specifications Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 4 TYPICAL CHARACTERISTICS 4.1 TYPICAL PERFORMANCE ADC SNR vs CHANNEL GAIN TOTAL HARMONIC DISTORTION vs HEADPHONE OUTPUT POWER 100 0 THD - Total Harmonic Distortion - dB SNR - Signal-to-Noise Ratio - dB CM=0.9 V, -10 RL = 32 W RIN = 10 kW, Differential 90 80 RIN = 20 kW, Differential 70 60 50 RIN = 10 kW, Single Ended 40 30 RIN = 20 kW, Single Ended 20 -40 -50 -60 -70 -80 -90 -100 20 60 40 CM=1.65 V, RL = 16 W -30 0 0 0 20 Channel Gain - dB 40 60 80 Headphone Output Power - mW 100 Figure 4-1. Figure 4-2. TOTAL HARMONIC DISTORTION vs HEADPHONE OUTPUT POWER HEADPHONE SNR AND OUTPUT POWER vs OUTPUT COMMON MODE SETTING 0 70 105 Load = 32 W BTL -10 100 -20 SNR - Signal-to-Noise Ratio - dB THD - Total Harmonic Distortion - dB CM=1.65 V, RL = 32 W -20 10 -20 CM=0.9 V, RL = 16 W -30 CM=1.5 V -40 CM=1.65 V -50 -60 -70 -80 60 SNR 95 50 90 40 85 80 30 OUTPUT POWER 75 20 70 10 65 -90 -100 60 0 50 100 150 Headphone output Power - mW Figure 4-3. Submit Documentation Feedback 200 0 0.75 0.9 1.5 1.25 Output Common Mode Setting - V 1.65 Figure 4-4. TYPICAL CHARACTERISTICS 17 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com LDO DROPOUT VOLTAGE vs LOAD CURRENT LDO LOAD RESPONSE 350 20 DVDD LDO 15 Change In Output Voltage - mV 300 Dropout Voltage - mV 250 200 AVDD LDO 150 100 50 10 AVDD LDO 5 0 DVDD LDO -5 -10 -15 0 -20 0 10 20 30 Load - mA 40 50 0 10 20 Load - mA Figure 4-5. 30 40 50 Figure 4-6. MICBIAS MODE 2, CM = 0.9V, LDOIN OP STAGE vs MICBIAS LOAD CURRENT 2.6 MicBIAS Voltage - mV 2.55 2.5 2.45 2.4 0 0.5 1 1.5 2 MicBIAS Load - mA 2.5 3 Figure 4-7. 18 TYPICAL CHARACTERISTICS Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 4.2 FFT SINGLE ENDED LINE INPUT TO ADC FFT @ -1dBr vs FREQUENCY DAC PLAYBACK TO HEADPHONE FFT @ -1dBFS vs FREQUENCY 0 0 DAC ADC -20 -20 -40 Power - dBr Power - dBFs -40 -60 -80 -60 -80 -100 -100 -120 -120 -140 0 5000 10000 f - Frequency - Hz 20000 15000 0 5000 10000 f - Frequency - Hz 15000 20000 Figure 4-8. Figure 4-9. DAC PLAYBACK TO LINE-OUT FFT @ -1dBFS vs FREQUENCY LINE INPUT TO HEADPHONE FFT @ 446mVrms vs FREQUENCY 0 0 DAC -20 -20 -40 Power - dBr Power - dBr -40 -60 -60 -80 -80 -100 -100 -120 -140 -120 0 5000 10000 f - Frequency - Hz Figure 4-10. Submit Documentation Feedback 15000 20000 0 5000 10000 f - Frequency - Hz 15000 20000 Figure 4-11. TYPICAL CHARACTERISTICS 19 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com LINE INPUT TO LINE-OUT FFT @ 446mVrms vs FREQUENCY 0 -20 Power - dBr -40 -60 -80 -100 -120 -140 0 5000 10000 15000 20000 f - Frequency - Hz Figure 4-12. 20 TYPICAL CHARACTERISTICS Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5 Application Information 5.1 TYPICAL CIRCUIT CONFIGURATION Host Processor Reset MCLK SCL SDA BCLK WCLK DIN DOUT SPI_Select 1k 1k 2.7k MICBIAS 1K 0.1u 4700p 0.1u LOL 0.1uF 1K IN1_L TPA2012 Class D Amp LOR IN1_R 0.1uF 0.1u 4700p TLV320AIC3204 0.1u 0.1uF 1.9...3.6V IN2_L LDOIN 0.1uF 1.0uF 10uF 0.1uF IN2_R 1.1...3.6V 1k 1k IOVDD MFP3/SCLK 0.1uF LDO_SELECT IN3_R HPR Headset_Mic Earjack microphone and headset speakers HPL AVSS DVSS IOVSS AVDD DVDD REF Headset_Spkr_R 47uF 10 uF Headset_Spkr_L Headset_Gnd 10 uF 10 uF 47uF Figure 5-1. Typical Circuit Configuration 5.2 OVERVIEW The TLV320AIC3204 offers a wide range of configuration options. Figure 1-1 shows the basic functional blocks of the device. 5.2.1 Digital Pins Only a small number of digital pins are dedicated to a single function; whenever possible, the digital pins have a default function, and also can be reprogrammed to cover alternative functions for various applications. The fixed-function pins are Reset , LDO_Select and the SPI_Select pin, which are HW control pins. Depending on the state of SPI_Select, the two control-bus pins SCL/SSZ and SDA/MOSI are configured for either I2C or SPI protocol. Other digital IO pins can be configured for various functions via register control. An overview of available functionality is given in Section 5.2.5 below. Submit Documentation Feedback Application Information 21 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.2.2 www.ti.com Analog Pins Analog functions can also be configured to a large degree. For minimum power consumption, analog blocks are powered down by default. The blocks can be powered up with fine granularity according to the application needs. The possible analog routings of analog input pins to ADCs and output amplifiers as well as the routing from DACs to output amplifiers can be seen in Figure 5-2. 5.2.3 Power Supply To power up the device, a 3.3V system rail (1.9V to 3.6V) can be used. Internal LDOs generate the appropriate digital core voltage of 1.65V and analog core voltage of 1.8V (minimum 1.5V). For maximum flexibility, the respective voltages can also be supplied externally, bypassing the built-in LDOs. To support high-output drive capabilities, the output stages of the output amplifiers can either be driven from the analog core voltage or the 1.9...3.6V rail used for the LDO inputs (LDO_in). 5.2.4 Clocking To minimize power consumption, the system ideally provides a master clock that is a suitable integer multiple of the desired sampling frequencies. In such cases, internal dividers can be programmed to set up the required internal clock signals at very low power consumption. For cases where such master clocks are not available, the built-in PLL can be used to generate a clock signal that serves as an internal master clock. In fact, this master clock can also be routed to an output pin and may be used elsewhere in the system. The clock system is flexible enough that it even allows the internal clocks to be derived directly from an external clock source, while the PLL is used to generate some other clock that is only used outside the TLV320AIC3204. 5.2.5 Multifunction Pins The table below shows the possible allocation of pins for specific functions. The PLL input, for example, can be derived from any of 4 pins (MCLK, BCLK, DIN, GPIO). The next table then summarizes the register settings that must be applied to configure the pin assignment. In the second table, the letter/number combination refers to the letter defining the row and the pin number of the first table. Pin Function A PLL Input B Codec Clock Input 2 C I S BCLK input D I2S BCLK output E S (1) S (2) S (1) ,D (5) S (2) 3 WCLK H I2S ADC WCLK out I I2S DIN J I2S DOUT K General Purpose Output I K General Purpose Output II K General Purpose Output III L General Purpose Input I 8 SCLK MFP3 11 MISO MFP4 32 GPIO MFP5 S (4) S (4) S ,D E (6) E I2S ADC word clock input 5 DOUT MFP2 (2) E, D I S WCLK output 4 DIN MFP1 S (3) 2 I S WCLK input G 22 2 BCLK 2 F (1) (2) (3) (4) (5) (6) 1 MCLK E E E E S (3) ,D E, D E E E E S(1): The MCLK pin can be used to drive the PLL and Codec Clock inputs simultaneously S(2): The BCLK pin can be used to drive the PLL and Codec Clock and audio interface bit clock inputs simultaneously S(3): The DIN/MFP1 pin can be used to drive the PLL and audio interface data inputs simultaneously S(4): The GPIO/MFP5 pin can be used to drive the PLL and Codec Clock inputs simultaneously D: Default Function E: The pin is exclusively used for this function, no other function can be implemented with the same pin (e.g. if GPIO/MFP5 has been allocated for General Purpose Output, it cannot be used as the INT1 output at the same time) Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Pin Function 1 MCLK 2 BCLK 3 WCLK 4 DIN MFP1 5 DOUT MFP2 8 SCLK MFP3 11 MISO MFP4 32 GPIO MFP5 L General Purpose Input II L General Purpose Input III M INT1 output E E E N INT2 output E E E O Digital Microphone Data Input P Digital Microphone Clock Output Q Secondary I2S BCLK input E E R Secondary I2S WCLK in E E S 2 Secondary I S DIN E T Secondary I2S DOUT U Secondary I2S BLCK OUT E E Secondary I S WCLK OUT W Headset Detect Input X Aux Clock Output E E E E E E E 2 V 5.2.6 E E E E E E E E E E Register Settings for Multifunction Pins The table below summarizes the multifunction pin specific settings that must be applied. Please be aware that more settings may be necessary to obtain a full interface definition matching the application requirement (e.g. registers Pg1 Reg 32 and 33). Description Required Register Setting N5 INT2 output on pin 5, DOUT/MFP2 Pg 0, Reg 53,D(3:1)=101 Pg 0, Reg 4, D(3:2)=01 N11 INT2 output on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=0101 PLL Input on pin 4, DIN/MFP1 Pg 0, Reg 54, D(2:1)=01 Pg 0, Reg 4, D(3:2)=11 N32 INT2 output on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0110 A32 PLL Input on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0001 Pg 0, Reg 4, D(3:2)=10 O4 Digital Microphone Data Input on pin 4, DIN/MFP1 Pg 0, Reg 54, D(2:1)=01 Pg 0, Reg 81, D(5:4)=10 B1 Codec Clock Input on pin 1, Pg 0, Reg 4, D(1:0)=00 MCLK O8 Digital Microphone Data Input on pin 8, SCLK/MFP3 Pg 0, Reg 56, D(2:1)=01 Pg 0, Reg 81, D(5:4)=01 B2 Codec Clock Input on pin 2, Pg 0, Reg 4, D(1:0)=01 BCLK O32 Digital Microphone Data Input on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0001 Pg 0, Reg 81, D(5:4)=00 B32 Codec Clock Input on pin 32, GPIO/MPF5 Pg 0, Reg 52, D(5:2)=0001 Pg 0, Reg 4, D(1:0)=10 P11 Digital Microphone Clock Output on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=0111 C2 I2S BCLK input on pin 2, BCLK Pg 0, Reg 27, D(3)=0 P32 Digital Microphone Clock Output on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=1010 D2 I2S BCLK output on pin 2, BCLK Pg 0, Reg 27, D(3)=1 Q8 Secondary I2S BCLK input on pin 8, SCLK/MFP3 Pg 0, Reg 56, D(2:1)=01 Pg 0, Reg 31,6:5)=01 E3 I2S WCLK input on pin 3, WCLK Pg 0, Reg 27, D(2)=0 Q32 Secondary I2S BCLK input on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0001 Pg 0, Reg 31,6:5)=00 F3 I2S WCLK output on pin3, WCLK Pg 0, Reg 27, D(2)=1 R8 Secondary I2S WCLK in on pin 8, SCLK/MFP3 Pg 0, Reg 56, D(2:1)=01 Pg 0, Reg 31, D(4:3)=01 Description Required Register Setting A1 PLL Input on pin 1, MCLK Pg 0, Reg 4, D(3:2)=00 A2 PLL Input on pin 2, BCLK A4 Submit Documentation Feedback Application Information 23 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Required Register Setting Description Required Register Setting G8 I2S ADC word clock input on pin 8, SCLK/MFP3 Pg 0, Reg 56, D(2:1)=01 Pg 0, Reg 31, D(2:1)=01 R32 Pg 0, Reg 52, Secondary I2S WCLK in on pin 32, D(5:2)=0001 GPIO/MFP50 Pg 0, Reg 31, D(4:3)=0 G32 I2S ADC word clock input on pin 32 GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0001 Pg 0, Reg 31, D(2:1)=00 S8 Secondary I2S DIN on pin 8, SCLK/MFP3 Pg 0, Reg 56, D(2:1)=01 Pg 0, Reg 31,0=1 H11 I2S ADC WCLK out on pin 11 MISO/MFP4 Pg 0, Reg 55, D(4:1)=0110 S32 Secondary I2S DIN on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0001 Pg 0, Reg 31,0=0 H32 I2S ADC WCLK out on pin 32 GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0111 T11 Secondary I2S DOUT on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=1000 I4 I2S DIN on pin 4, DIN/MFP1 Pg 0, Reg 54, D(2:1)=01 U5 Secondary I2S BCLK OUT on pin 5, DOUT/MFP2 Pg 0, Reg 53, D(3:1)=110 J5 I2S DOUT on pin 4, DOUT/MFP2 Pg 0, Reg 53, D(3:1)=001 U11 Secondary I2S BCLK OUT on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=1001 K5 General Purpose Out I on pin 5, DOUT/MFP2 Pg 0, Reg 53, D(3:1)=010 U32 Secondary I2S BCLK OUT on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=1000 K11 General Purpose Out II on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=0010 V5 Secondary I2S WCLK OUT on pin 5, SCLK/MFP3 Pg 0, Reg 53, D(3:1)=111 K32 General Purpose Out III on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0011 V11 Secondary I2S WCLK OUT on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=1010 L4 General Purpose In I on pin Pg 0, Reg 54, D(2:1)=10 4, DIN/MFP1 V32 Secondary I2S WCLK OUT on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=1001 L8 General Purpose In II on pin 8, SCLK/MFP3 Pg 0, Reg 56, D(2:1)=10 W8 Headset Detect Input on pin 8, SCLK/MFP3 Pg 0, Reg 56, D(2:1)=00 Pg 0,67,7=1 L32 General Purpose In III on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0010 X5 Aux Clock Output on pin 5, DOUT/MFP2 Pg 0, Reg 53, D(3:1)=011 M5 INT1 output on pin 5, DOUT/MFP2 Pg 0, Reg 53, D(3:1)=100 X11 Aux Clock Output on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=0011 M11 INT1 output on pin 11, MISO/MFP4 Pg 0, Reg 55, D(4:1)=0100 X32 Aux Clock Output on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0100 M32 INT1 output on pin 32, GPIO/MFP5 Pg 0, Reg 52, D(5:2)=0101 24 Application Information Description Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.3 ANALOG ROUTING AVDD LDOIN Vol Ctrl 0... -72dB IN1_L IN2_L Mixer Amp 0..-30dB IN1L MAL IN3_L LDAC MAR Headphone Amplifier -6dB ... + 29 dB HPL Line Out Amplifier -6dB ... + 29 dB LOL Line Out Amplifier -6dB ... + 29 dB LOR IN1_R P CM HP P + PGA Mic LeftLADC ADC 0...47.5 dB N Left DAC - IN2_R N MAL IN3_R LDAC RDAC Left Channel, Input Options: LOR Single Ended: IN1_L or IN2_L or IN3_L or IN1_R Differential: IN2_L and IN2_R or IN3_L and IN3_R CM2L CM LO CM1L 1,10,6 CM1R CM CM2R Right Channel, Input Options: Single Ended: IN1_R or IN2_R or IN3_R or IN2_L Differential: IN1_R and IN1_L or IN3_R and IN3_L IN3_L RDAC MAR IN1_L P N + PGA Mic 0...47.5 dB P LeftLADC ADC Right DAC CM HP - IN2_L N HPL LDAC IN3_R Mixer Amp 0..-30dB IN2_R RDAC Headphone Amplifier -6dB ... + 29 dB HPR MAR IN1R IN1_R Vol Ctrl 0... -72dB Figure 5-2. Analog Routing Diagram 5.3.1 Analog Low Power Bypass The TLV320AIC3204 offers two analog-bypass modes. In either of the modes, an analog input signal can be routed from an analog input pin to an amplifier driving an analog output pin. Neither the ADC nor the DAC resources are required for such operation; this supports low-power operation during analog-bypass mode. In analog low-power bypass mode, line-level signals can be routed directly from the analog inputs IN1L to the left headphone amplifier (HPL) and IN1R to HPR. This is configured on Page 1, Register 12, D(2) for the left channel and Page 1, Register 13, D(2) for the right channel 5.3.2 ADC Bypass Using Mixer Amplifiers In addition to the low-power bypass mode, there is a bypass mode that uses the programmable gain amplifiers of the input stage in conjunction with a mixer amplifier. With this mode, microphone-level signals can be amplified and routed to the line or headphone outputs, fully bypassing the ADC and DAC. To enable this mode, the mixer amplifiers are powered on (Page1, Register 9, D(0:1). Submit Documentation Feedback Application Information 25 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.4 DEVICE INITIALIZATION 5.4.1 Reset The TLV320AIC3204 internal logic must be initialized to a known condition for proper device function. To initialize the device in its default operating condition, the hardware reset pin (RESET) must be pulled low for at least 10ns. For this initialization to work, both the IOVDD and DVdd supplies must be powered up. It is recommended that while the DVdd supply is being powered up, the RESET pin be pulled low. The device can also be reset via software reset. Writing '1' into Page 0, Register 1, D(0) resets the device. After a device reset, all registers are initialized with default values as listed in Section 6 5.4.2 Device Startup Lockout Times After the TLV320AIC3204 is initialized through hardware reset at power-up or software reset, the internal memories is initialized to default values. This initialization takes place within 1ms after pulling the RESET signal high. During this initialization phase no Register read or Register write operation should be performed on ADC or DAC coefficient buffers. Also, no block within the codec should be powered up during the initialization phase. 5.4.3 Analog and Reference Startup The TLV320AIC3204 uses an external REF pin for decoupling the reference voltage used for the data converters and other analog blocks. REF pin requires a minimum 1uF decoupling capacitor from REF to AVss. In order for any analog block to be powered up, the Analog Reference block must be powered up. By default, the Analog Reference block will implicitly be powered up whenever any analog block is powered up, or it can be powered up independently. Detailed descriptions of Analog Reference including fast power-up options are provided in Section 5.19. During the time that the reference block is not completely powered up, subsequent requests for powering up analog blocks (e.g., PLL) are queued, and executed after the reference power up is complete. 5.4.4 PLL Startup Whenever the PLL is powered up, a startup delay of approx of 10ms is involved after the power up command of the PLL and before the clocks are available to the codec. This delay is to ensure stable operation of PLL and clock-divider logic. 26 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.5 POWERTUNE The TLV320AIC3204 features PowerTune, a mechanism to balance power-versus-performance trade-offs at the time of device configuration. The device can be tuned to minimize power dissipation, to maximize performance, or to an operating point between the two extremes to best fit the application. 5.5.1 PowerTune Modes The TLV320AIC3204 PowerTune modes are called PTM_R1 to PTM_R4 for the recording (ADC) path and PTM_P1 to PTM_P4 for the playback (DAC) path. 5.5.1.1 ADC - Programming PTM_R1 to PTM_R4 The device powers up with PTM_R4 (highest performance) set as default. This mode always works across all combinations of common-mode voltage, chosen processing block, or chosen oversampling ratio. If the application can make use of a lower-power configuration please refer to the ADC and DAC power consumption chapters below for valid combination of PowerTune modes and other device parameters. The ADC configuration of the PowerTune mode affects right and left channels simultaneously. PTM_R1 PTM_R2 PTM_R3 PTM_R4 0xFF 0xB6 0x64 0x00 Pg 1, Reg 61, D(7:0) 5.5.1.2 DAC - Programming PTM_P1 to PTM_P4 On the playback side, the performance is determined by a combination of register settings and the audio data word length applied. For the highest performance setting (PTM_P4), an audio-data word length of 20 bits is required, while for the modes PTM_P1 to PTM_P3 a word length of 16 bits is sufficient. PTM_P1 PTM_P2 PTM_P3 PTM_P4 Pg 1, Reg 3, D(4:2) 0x2 0x1 0x0 0x0 Pg 1, Reg 4, D(4:2) 0x2 0x1 0x0 0x0 Audio Data word length 16 bits 16 bits 16 bits 20 or more bits Pg 0, Reg 27, D(5:4) 0x0 0x0 0x0 0x1, 0x2, 0x3 5.5.1.3 Processing Blocks The choice of processing blocks, PRB_P1 to PRB_P25 for playback and PRB_R1 to PRB_R18 for recording, also influences the power consumption. In fact, the numerous processing blocks have been implemented to offer a choice between power-optimization and configurations with more signal-processing resources. Submit Documentation Feedback Application Information 27 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.5.2 www.ti.com ADC Power Consumption The tables in this section give recommendations for various PowerTune modes. Typical performance and power-consumption values are listed. PowerTune modes that are not supported are marked with an `X'. All measurements were taken with the PLL turned off and the ADC configured for single-ended input. 5.5.2.1 ADC, Stereo, 48kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V AOSR = 128, Processing Block = PRB_R1 (Decimation Filter A) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 0dB full scale X 375 375 375 X 500 500 500 mVRMS Max. allowed input level w.r.t. 0dB full scale X -12 0 0 X -12 0 0 dB full scale Effective SNR w.r.t. max. allowed input level X 78.5 90.7 90.2 X 80.4 92.9 92.7 dB Power consumption X 11.9 14.2 18.2 X 11.9 14.2 18.2 mW Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R2 A +1.4 PRB_R3 A +1.4 5.5.2.2 ADC, Stereo, 48kHz, DVdd = 1.8V, AVdd = 1.8V AOSR = 64, Processing Block = PRB_R7 (Decimation Filter B) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 0dB full scale 375 X 375 X X X 500 X mVRMS Max. allowed input level w.r.t. 0dB full scale -2 X 0 X X X 0 X dB full scale Effective SNR w.r.t. max. allowed input level 86.0 X 88.1 X X X 90.4 X dB Power consumption 8.4 X 11.4 X X X 11.5 X mW Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R8 B +0.7 PRB_R9 B +0.7 PRB_R1 A +2.0 PRB_R2 A +3.4 PRB_R3 A +3.4 5.5.2.3 ADC, Stereo, 48kHz, Lowest Power Consumption AOSR = 64, Processing Block = PRB_R7 (Decimation Filter B), DVdd = 1.26V PTM_R1 CM = 0.75V AVdd=1.5V PTM_R3 CM = 0.9V AVdd=1.8V UNIT 0dB full scale 375 500 mVRMS Max. allowed input level w.r.t. 0dB full scale -2 0 dB full scale Effective SNR w.r.t. max. allowed input level 88.0 92.2 dB Power consumption 6.0 11.4 mW 28 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R8 B + 0.3 PRB_R9 B + 0.3 PRB_R1 A + 1.0 PRB_R2 A + 1.6 PRB_R3 A + 1.6 5.5.2.4 ADC, Mono, 48kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V AOSR = 128, Processing Block = PRB_R4 (Decimation Filter A) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 0dB full scale X 375 375 375 X 500 500 500 mVRMS Max. allowed input level w.r.t. 0dB full scale X -12 0 0 X -12 0 0 dB full scale Effective SNR w.r.t. max. allowed input level X 78.3 90.8 90.6 X 80.3 92.8 92.7 dB Power consumption X 9.1 11.4 15.4 X 9.1 11.4 15.4 mW Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R5 A +0.7 PRB_R6 A +0.7 5.5.2.5 ADC, Mono, 48kHz, DVdd = 1.8V, AVdd = 1.8V AOSR = 64, Processing Block = PRB_R11 (Decimation Filter B) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 0dB full scale 375 X 375 X X X 500 X mVRMS Max. allowed input level w.r.t. 0dB full scale -2 X 0 X X X 0 X dB full scale Effective SNR w.r.t. max. allowed input level 86.0 X 88.1 X X X 90.3 X dB Power consumption 7.0 X 10.1 X X X 10.1 X mW Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R10 B 0 PRB_R12 B 0 PRB_R4 A +0.7 PRB_R5 A +1.4 PRB_R6 A +1.4 Submit Documentation Feedback Application Information 29 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.5.2.6 ADC, Mono, 48 kHz, Lowest Power Consumption, AOSR = 64, Processing Block = PRB_R11 (Decimation Filter B), DVdd = 1.26V PTM_R1 CM = 0.75V AVdd=1.5V PTM_R3 CM = 0.9V AVdd=1.8V UNIT 0dB full scale 375 500 mVRMS Max. allowed input level w.r.t. 0dB full scale -2 0 dB full scale Effective SNR w.r.t. max. allowed input level 86.0 90.5 dB Power consumption 5.1 9.2 mW Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R10 B 0 PRB_R12 B 0 PRB_R4 A +0.3 PRB_R5 A +0.7 PRB_R6 A +0.7 5.5.2.7 ADC, Stereo, 8kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V AOSR = 128, Processing Block = PRB_R1 (Decimation Filter A) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 375 X X X 500 X X X mVRMS 0 X X X 0 X X X dB full scale Effective SNR w.r.t. max. allowed input level 91.1 X X X 93.2 X X X dB Power consumption 6.5 X X X 6.5 X X X mW 0dB full scale Max. allowed input level w.r.t. 0dB full scale Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R2 A +0.2 PRB_R3 A +0.2 5.5.2.8 ADC, Stereo, 8kHz, DVdd = 1.8V, AVdd = 1.8V AOSR = 64, Processing Block = PRB_R7 (Decimation Filter B) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 375 X X X 500 X X X mVRMS 0 X X X 0 X X X dB full scale Effective SNR w.r.t. max. allowed input level 88.2 X X X 90.6 X X X dB Power consumption 6.0 X X X 6.1 X X X mW 0dB full scale Max. allowed input level w.r.t. 0dB full scale Alternative processing blocks: 30 Processing Block Filter Est. Power Change (mW) PRB_R8 B + 0.1 PRB_R9 B + 0.1 PRB_R1 A + 0.3 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Processing Block Filter PRB_R2 A Est. Power Change (mW) +0.6 PRB_R3 A + 0.6 5.5.2.9 ADC, Stereo, 8kHz, Lowest Power Consumption, AOSR = 64, Processing Block = PRB_R7 (Decimation Filter B), PowerTune Mode = PTM_R1, DVdd = 1.26 CM = 0.75V AVdd=1.5V CM = 0.9V AVdd=1.8V 375 500 mVRMS 0 0 dB full scale Effective SNR w.r.t. max. allowed input level 88.3 92.4 dB Power consumption 4.7 5.8 mW 0dB full scale Max. allowed input level w.r.t. 0dB full scale UNIT Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R8 B + 0.1 PRB_R9 B + 0.1 PRB_R1 A + 0.2 PRB_R2 A + 0.3 PRB_R3 A + 0.3 5.5.2.10 ADC, Mono, 8kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V AOSR = 128, Processing Block = PRB_R4 (Decimation Filter A) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 375 X X X 500 X X X mVRMS 0 X X X 0 X X X dB full scale Effective SNR w.r.t. max. allowed input level 88.5 X X X 93.3 X X X dB Power consumption 5.5 X X X 5.6 X X X mW 0dB full scale Max. allowed input level w.r.t. 0dB full scale Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R5 A +0.1 PRB_R6 A +0.1 Submit Documentation Feedback Application Information 31 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.5.2.11 ADC, Mono, 8kHz, DVdd = 1.8V, AVdd = 1.8V AOSR = 64, Processing Block = PRB_R11 (Decimation Filter B) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 375 X X X 500 X X X mVRMS 0 X X X 0 X X X dB full scale Effective SNR w.r.t. max. allowed input level 88.1 X X X 93.0 X X X dB Power consumption 5.3 X X X 5.3 X X X mW 0dB full scale Max. allowed input level w.r.t. 0dB full scale Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R10 B 0 PRB_R12 B 0 PRB_R4 A +0.1 PRB_R5 A +0.2 PRB_R6 A +0.2 5.5.2.12 ADC, Mono, 8kHz, Lowest Power Consumption AOSR = 64, Processing Block = PRB_R11 (Decimation Filter B), PowerTune Mode = PTM_R1, DVdd = 1.26V CM = 0.75V AVdd=1.5V CM = 0.9V AVdd=1.8V 375 500 mVRMS 0 0 dB full scale Effective SNR w.r.t. max. allowed input level 88.2 89.9 dB Power consumption 4.2 5.0 mW 0dB full scale Max. allowed input level w.r.t. 0dB full scale UNIT Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R10 B 0 PRB_R12 B 0 PRB_R4 A +0.1 PRB_R5 A +0.1 PRB_R6 A +0.1 5.5.2.13 ADC, Stereo, 192kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V AOSR = 32, Processing Block = PRB_R14 (Decimation Filter C) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_R1 PTM_R2 PTM_R3 PTM_R4 PTM_R1 PTM_R2 PTM_R3 PTM_R4 UNIT 0dB full scale X X X 375 X X X 500 mVRMS Max. allowed input level w.r.t. 0dB full scale X X X 0 X X X 0 dB full scale Effective SNR w.r.t. max. allowed input level X X X 86.5 X X X 88.7 dB Power consumption X X X 21.9 X X X 21.9 mW 32 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R13 C -2.7 PRB_R15 C 0 5.5.2.14 ADC, Stereo, 192kHz, Lowest Power Consumption AOSR = 32, Processing Block = PRB_R14 (Decimation Filter C), PowerTune Mode = PTM_R4, DVdd = 1.26V CM = 0.75V AVdd=1.5V CM = 0.9V AVdd=1.8V UNIT 375 500 mVRMS 0 0 dB full scale Effective SNR w.r.t. max. allowed input level 86.5 89.0 dB Power consumption 16.2 18.4 mW 0dB full scale Max. allowed input level w.r.t. 0dB full scale Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_R13 C - 1.3 PRB_R15 C 0 Submit Documentation Feedback Application Information 33 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.5.3 www.ti.com DAC Power Consumption The tables in this section give recommendations for various DAC PowerTune modes. Typical performance and power-consumption numbers are listed. PowerTune modes which are not supported are marked with an `X'. All measurements were taken with the PLL turned off, no signal is present, and the DAC modulator is fully running. 5.5.3.1 DAC, Stereo, 48kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V DOSR = 128, Processing Block = PRB_P8 (Interpolation Filter B) Device Common Mode Setting = 0.75V 0dB full scale (1) Device Common Mode Setting = 0.9V PTM_P1 PTM_P2 PTM_P3 PTM_P4 PTM_P1 PTM_P2 PTM_P3 PTM_P4 UNIT 75 225 375 375 100 300 500 500 mVRMS 88.7 94.1 98.9 99.0 90.5 96.3 100.0 100.0 dB HP out (32 load) Effective SNR w.r.t. 0dB full scale Power consumption 9.4 10.1 10.9 10.9 9.5 10.1 10.9 10.9 mW Line out Effective SNR w.r.t. 0dB full scale 88.7 94.1 98.9 99.0 90.5 96.3 100.0 100.0 dB Power consumption 7.7 8.4 9.1 9.1 7.7 8.4 9.1 9.2 mW (1) Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: 34 Processing Block Filter PRB_P1 A 0 PRB_P2 A +3.1 PRB_P3 A +1.6 PRB_P7 B -1.6 PRB_P9 B 0 PRB_P10 B +1.6 PRB_P11 B -0.8 PRB_P23 A 0 PRB_P24 A +3.1 PRB_P25 A +3.1 Application Information Est. Power Change (mW) Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.5.3.2 DAC, Stereo, 48kHz, Lowest Power Consumption DOSR = 64, Interpolation Filter B, DVdd = 1.26V CM = 0.75V AVdd=1.5V PRB_P8 PTM_P1 0dB full scale (1) HP out (32 load) Line out (1) Effective SNR w.r.t. 0dB full scale CM = 0.9V AVdd=1.8V PRB_P8 PTM_P1 CM = 0.75V AVdd=1.5V PRB_P7 PTM_P4 UNIT 75 100 375 mVRMS 89.4 89.4 99.9 dB Power consumption 5.5 6.9 7.1 mW Effective SNR w.r.t. 0dB full scale 89.5 91.2 100.1 dB Power consumption 4.2 4.1 5.1 mW Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: (1) Est. Power Change (mW) (1) Processing Block Filter PRB_P1 A 0 PRB_P2 A +1.5 PRB_P3 A +0.8 PRB_P7 B -0.8 PRB_P9 B 0 PRB_P10 B +0.8 PRB_P11 B 0 PRB_P23 A 0 PRB_P24 A +1.5 PRB_P25 A +1.5 Estimated power change is w.r.t. PRB_P8. 5.5.3.3 DAC, Mono, 48kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V DOSR = 128, Processing Block = PRB_P13 (Interpolation Filter B) Device Common Mode Setting = 0.75V 0dB full scale (1) Device Common Mode Setting = 0.9V PTM_P1 PTM_P2 PTM_P3 PTM_P4 PTM_P1 PTM_P2 PTM_P3 PTM_P4 UNIT 75 225 375 375 100 300 500 500 mVRMS HP out (32 load) Effective SNR w.r.t. 0dB full scale 88.1 96.1 98.7 99.5 90.4 96.3 99.4 100 dB Power consumption 5.8 6.2 6.5 6.5 5.8 6.2 6.5 6.5 mW Line out Effective SNR w.r.t. 0dB full scale 89.6 97.1 100.3 100.3 90.5 96.3 100 100 dB Power consumption 5.0 5.4 5.7 5.7 5.0 5.4 5.7 5.7 mW (1) Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: Processing Block Filter Est. Power Change(mW) PRB_P4 A 0 PRB_P5 A +1.6 PRB_P6 A +1.6 PRB_P12 B -0.8 PRB_P14 B 0 PRB_P15 B +1.6 PRB_P16 B 0 Submit Documentation Feedback Application Information 35 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.5.3.4 DAC, Mono, 48kHz, Lowest Power Consumption DOSR = 64, Processing Block = PRB_P13 (Interpolation Filter B), PowerTune Mode = PTM_P1, DVdd = 1.26V CM = 0.75V AVdd=1.5V 0dB full scale (1) HP out (32 load) Effective SNR w.r.t. 0dB full scale Line out (1) CM = 0.9V AVdd=1.8V UNIT 75 100 mVRMS 88.9 90.8 dB Power consumption 3.4 3.8 mW Effective SNR w.r.t. 0dB full scale 89.5 91.1 dB Power consumption 3.0 3.1 mW Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: Processing Block Filter PRB_P4 A Est. Power Change (mW) 0 PRB_P5 A +0.8 PRB_P6 A +0.8 PRB_P12 B -0.4 PRB_P14 B 0 PRB_P15 B +0.8 PRB_P16 B 0 5.5.3.5 DAC, Stereo, 8kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V DOSR = 768, Processing Block = PRB_P7 (Interpolation Filter B) Device Common Mode Setting = 0.75V 0dB full scale Device Common Mode Setting = 0.9V PTM_P1 PTM_P2 PTM_P3 PTM_P4 PTM_P1 PTM_P2 PTM_P3 PTM_P4 UNIT 75 X X X 100 X X X mVRMS 88.7 X X X 90.5 X X X dB HP out (32 load) Effective SNR w.r.t. 0dB full scale (1) Power consumption 6.1 X X X 6.1 X X X mW Line out Effective SNR w.r.t. 0dB full scale 88.7 X X X 90.5 X X X dB Power consumption 3.6 X X X 4.3 X X X mW (1) Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: 36 Processing Block Filter Est. Power Change (mW) PRB_P1 A +0.3 PRB_P2 A +0.8 PRB_P3 A +0.5 PRB_P8 B +0.3 PRB_P9 B +0.3 PRB_P10 B +0.5 PRB_P11 B +0.3 PRB_P23 A +0.3 PRB_P24 A +0.8 PRB_P25 A +0.8 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.5.3.6 DAC, Stereo, 8kHz, Lowest Power Consumption DOSR = 384, Processing Block = PRB_P7 (Interpolation Filter B), PowerTune Mode = PTM_P1, DVdd = 1.26V CM = 0.75V AVdd=1.5V 0dB full scale (1) HP out (32 load) Effective SNR w.r.t. 0dB full scale Line out (1) CM = 0.9V AVdd=1.8V UNIT 75 100 mVRMS 88.4 90.2 dB Power consumption 3.8 5.1 mW Effective SNR w.r.t. 0dB full scale 89.6 91.1 dB Power consumption 2.4 2.9 mW Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_P1 A +0.1 PRB_P2 A +0.4 PRB_P3 A +0.3 PRB_P8 B +0.1 PRB_P9 B +0.1 PRB_P10 B +0.3 PRB_P11 B +0.1 PRB_P23 A +0.1 PRB_P24 A +0.4 PRB_P25 A +0.4 5.5.3.7 DAC, Mono, 8kHz, Highest Performance, DVdd = 1.8V, AVdd = 1.8V DOSR = 768, Processing Block = PRB_P4 (Interpolation Filter A) Device Common Mode Setting = 0.75V 0dB full scale (1) PTM_P2 PTM_P3 PTM_P4 Device Common Mode Setting = 0.9V PTM_P1 PTM_P2 PTM_P3 PTM_P4 UNIT 75 X X X 100 X X X mVRMS 89.4 X X X 89.8 X X X dB Power consumption 4.4 X X X 4.4 X X X mW Effective SNR w.r.t. 0dB full scale 89.6 X X X 91.2 X X X dB Power consumption 3.6 X X X 3.6 X X X mW HP out (32 load) Effective SNR w.r.t. 0dB full scale Line out (1) PTM_P1 Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_P5 A +0.3 PRB_P6 A +0.3 PRB_P12 B -0.1 PRB_P13 B 0 PRB_P14 B 0 PRB_P15 B +0.3 PRB_P16 B 0 Submit Documentation Feedback Application Information 37 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.5.3.8 DAC, Mono, 8kHz, Lowest Power Consumption DOSR = 384, Processing Block = PRB_P4 (Interpolation Filter A), PowerTune Mode = PTM_P1, DVdd = 1.26V CM = 0.75V AVdd=1.5V 0dB full scale (1) HP out (32 load) Effective SNR w.r.t. 0dB full scale Line out (1) CM = 0.9V AVdd=1.8V UNIT 75 100 mVRMS 89.1 90.7 dB Power consumption 2.6 3.0 mW Effective SNR w.r.t. 0dB full scale 89.5 91.1 dB Power consumption 2.0 2.2 mW Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_P5 A +0.1 PRB_P6 A +0.1 PRB_P12 B -0.1 PRB_P13 B 0 PRB_P14 B 0 PRB_P15 B +0.1 PRB_P16 B 0 5.5.3.9 DAC, Stereo, 192kHz, DVdd = 1.8V, AVdd = 1.8V DOSR = 32, Processing Block = PRB_P17 (Interpolation Filter C) Device Common Mode Setting = 0.75V Device Common Mode Setting = 0.9V PTM_P1 PTM_P2 PTM_P3 PTM_P4 PTM_P1 PTM_P2 PTM_P3 PTM_P4 UNIT 0dB full scale (1) X X X 375 X X X 500 mVRMS HP out (32 load) Effective SNR w.r.t. 0dB full scale X X X 99.1 X X X 99.9 dB Power consumption X X X 13.4 X X X 13.5 mW Line out Effective SNR w.r.t. 0dB full scale X X X 100.5 X X X 100.5 dB Power consumption X X X 11.3 X X X 11.3 mW (1) Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: 38 Processing Block Filter Est. Power Change (mW) PRB_P18 C +9.3 PRB_P19 C +3.1 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.5.3.10 DAC, Stereo, 192kHz, Lowest Power Consumption DOSR = 16, Processing Block = PRB_R17 (Interpolation Filter C), PowerTune Mode = PTM_P4, DVdd = 1.26V CM = 0.75V AVdd=1.5V 0dB full scale (1) HP out (32 load) Line out (1) CM = 0.9V AVdd=1.8V UNIT 375 500 mVRMS Effective SNR w.r.t. 0dB full scale 99.4 100.3 dB Power consumption 7.7 8.9 mW Effective SNR w.r.t. 0dB full scale 100.4 100.4 dB Power consumption 6.1 6.7 mW Reduced 0dB full-scale swing can be compensated by applying appropriate gain in the output drivers see Section 5.13.1. Alternative processing blocks: Processing Block Filter Est. Power Change (mW) PRB_P18 C +4.5 PRB_P19 C +1.5 5.6 ADC 5.6.1 Concept The TLV320AIC3204 includes a stereo audio ADC, which uses a delta-sigma modulator with a programmable oversampling ratio, followed by a digital decimation filter. The ADC supports sampling rates from 8kHz to 192kHz. In order to provide optimal system power management, the stereo ADC can be powered up one channel at a time, to support the case where only mono record capability is required. In addition, both channels can be fully powered or entirely powered down. Because of the oversampling nature of the audio ADC and the integrated digital decimation filtering, requirements for analog anti-aliasing filtering are very relaxed. The TLV320AIC3204 integrates a second order analog anti-aliasing filter with 28-dB attenuation at 6MHz. This filter, combined with the digital decimation filter, provides sufficient anti-aliasing filtering without requiring additional external components. 5.6.2 Routing As shown in Figure 5-2, the TLV320AIC3204 includes six analog inputs which can be configured as either 3 stereo single-ended pairs or 3 fully-differential pairs. These pins connect through series resistors and switches to the virtual ground terminals of two fully-differential amplifiers (one per ADC/PGA channel). By turning on only one set of switches per amplifier at a time, the inputs can be effectively multiplexed to each ADC PGA channel. By turning on multiple sets of switches per amplifier at a time, audio sources can be mixed. The TLV320AIC3204 supports the ability to mix up to four single-ended analog inputs or up to two fully-differential analog inputs into each ADC PGA channel. In most applications, high input impedance is desired for analog inputs. However when used in conjunction with high gain as in the case of microphone inputs, the higher input impedance results in higher noise or lower dynamic range. The TLV320AIC3204 allows the user the flexibility of choosing the input impedance from 10k, 20k and 40k. When multiple inputs are mixed together, by choosing different input impedances, level adjustment can be achieved. For example, if one input is selected with 10k input impedance and the second input is selected with 20k input impedance, then the second input is attenuated by half as compared to the first input. Note that this input level control is not intended to be a volume control, but instead used occasionally for level setting. Mixing of multiple inputs can easily lead to PGA outputs that exceed the range of the internal amplifiers, resulting in saturation and clipping of the mixed output signal. Whenever mixing is being implemented, the system designer is advised to take adequate precautions to avoid such a saturation from occurring. In general, the mixed signal should not exceed 0dB. Submit Documentation Feedback Application Information 39 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Typically, voice or audio signal inputs are capacitively coupled to the device. This allows the device to independently set the common mode of the input signals to values chosen by register control of Page 1, Register 10, D(6) to either 0.9V or 0.75V. The correct value maximizes the dynamic range across the entire analog-supply range. Failure to capacitively connect the input to the device can cause high offset due to mismatch in source common-mode and device common-mode setting. In extreme cases it could also saturate the analog channel, causing distortion. 5.7 ADC Gain Setting Input Selection Digital Volume Control Analog Gain Digital Gain Adjust Frequency Response/ Gain Audio Interface Analog In ADC Filtering PGA ADC 0, -6, -12 dB 0...47.5 dB Step = 0.5 dB Fully -12...20 dB 0...-0.4 dB Programmable Step = 0.5 dB Step = 0.1 dB Coefficients When the gain of the ADC Channel is kept at 0dB and the common mode set to 0.75V, a single-ended input of 0.375VRMS results in a full-scale digital signal at the output of ADC channel. Similarly, when the gain is kept at 0dB, and common mode is set to 0.9V, a single-ended input of 0.5VRMS results in a full-scale digital signal at the output of the ADC channel. However various block functions control the gain through the channel. The gain applied by the PGA is described in Table 5-1. Additionally, the digital volume control adjusts the gain through the channel as described in Section 5.7.2. A finer level of gain is controlled by fine gain control as described in Section 5.7.3. The decimation filters A, B and C along with the delta-sigma modulator contribute to a DC gain of 1.0 through the channel. 5.7.1 Analog Programmable Gain Amplifier (PGA) The TLV320AIC3204 features a built-in low-noise PGA for boosting low-level signals, such as direct microphone inputs, to full-scale to achieve high SNR. This PGA can provide a gain in the range of 0dB to 47.5dB for single-ended inputs or 6dB to 53.5dB for fully-differential inputs (gain calculated w.r.t. input impedance setting of 10k, 20k input impedance will result in 6dB lower and 40k will result in 12dB lower gain). This gain can be user controlled by writing to Page 1, Register 59 and Page 1, Register 60. In the AGC mode this gain can also be automatically controlled by the built-in hardware AGC. Table 5-1. Analog PGA vs Input Configuration 40 Page 1, Register 59, D(6:0) Page 1, Register 60, D(6:0) EFFECTIVE GAIN APPLIED BY PGA SINGLE-ENDED DIFFERENTIAL RIN = 10K RIN = 20K RIN = 40K RIN = 10K RIN = 20K RIN = 40K 000 0000 0 dB -6 dB -12 dB 6.0 dB 0 dB -6.0 dB 000 0001 0.5 dB -5.5 dB -11.5 dB 6.5 dB 0.5 dB -5.5 dB 000 0010 1.0 dB -5.0 dB -11.0 dB 7.0 dB 7.5 dB -5.0 dB ... ... ... ... ... ... ... 101 1110 47.0 dB 41.0 dB 35.0 dB 53.0 dB 47.0 dB 41.0 dB 101 1111 47.5 dB 41.5 dB 35.5 dB 53.5 dB 47.5 dB 41.5 dB Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 The gain changes are implemented with an internal soft-stepping algorithm that only changes the actual volume level by one 0.5-dB step every one or two ADC output samples, depending on the register value (see registers Page 0, Reg 81, D(1:0)). This soft-stepping ensures that volume control changes occur smoothly with no audible artifacts. On reset, the PGA gain defaults to a mute condition, and at power down, the PGA soft-steps the volume to mute before shutting down. A read-only flag Page 0, Reg 36, D(7) and D(3) is set whenever the gain applied by the PGA equals the desired value set by the register. The soft-stepping control can also be disabled by programming Page 0, Reg 81, D(1:0). 5.7.2 Digital Volume Control The TLV320AIC3204 also has a digital volume-control block with a range from -12dB to +20dB in steps of 0.5dB. It is set by programming Page 0, Register 83 and 84 respectively for left and right channels. Table 5-2. Digital Volume Control for ADC Desired Gain dB Left / Right Channel Page 1, Register 83/84, D(6:0) -12.0 110 1000 -11.5 110 1001 -11.0 110 1010 .. -0.5 111 1111 0.0 000 0000 (Default) +0.5 000 0001 .. +19.5 010 0111 +20.0 010 1000 During volume control changes, the soft-stepping feature is used to avoid audible artifacts. The soft-stepping rate can be set to either 1 or 2 gain steps per sample. Soft-stepping can also be entirely disabled. This soft-stepping is configured via Page 1, Register 81, D(1:0), and is common to soft-stepping control for the analog PGA. During power-down of an ADC channel, this volume control soft-steps down to -12.0dB before powering down. Due to the soft-stepping control, soon after changing the volume control setting or powering down the ADC channel, the actual applied gain may be different from the one programmed through the control register. The TLV320AIC3204 gives feedback to the user, through read-only flags Page 1, Reg 36, D(7) for Left Channel and Page 1, Reg 36, D(3) for the right channel. 5.7.3 Fine Digital Gain Adjustment Additionally, the gains in each of the channels is finely adjustable in steps of 0.1dB. This is useful when trying to match the gain between channels. By programming Page 0, Register 82 the gain can be adjusted from 0dB to -0.4dB in steps of 0.1dB. This feature, in combination with the regular digital volume control allows the gains through the left and right channels be matched in the range of -0.5dB to +0.5dB with a resolution of 0.1dB. 5.7.4 AGC The TLV320AIC3204 includes Automatic Gain Control (AGC) for ADC recording. AGC can be used to maintain a nominally-constant output level when recording speech. As opposed to manually setting the PGA gain, in the AGC mode, the circuitry automatically adjusts the PGA gain as the input signal becomes overly loud or very weak, such as when a person speaking into a microphone moves closer or farther from the microphone. The AGC algorithm has several programmable parameters, including target gain, attack Submit Documentation Feedback Application Information 41 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com and decay time constants, noise threshold, and max PGA applicable, that allow the algorithm to be fine tuned for any particular application. The algorithm uses the absolute average of the signal (which is the average of the absolute value of the signal) as a measure of the nominal amplitude of the output signal. Since the gain can be changed at the sample interval time, the AGC algorithm operates at the ADC sample rate. * Target Level represents the nominal output level at which the AGC attempts to hold the ADC output signal level. The TLV320AIC3204 allows programming of eight different target levels, which can be programmed from -5.5 dB to -24 dB relative to a full-scale signal. Since the TLV320AIC3204 reacts to the signal absolute average and not to peak levels, it is recommended that the target level be set with enough margin to avoid clipping at the occurrence of loud sounds. * Attack Time determines how quickly the AGC circuitry reduces the PGA gain when the output signal level exceeds the target level due to increase in input signal level. Wide range of attack time programmability is supported in terms of number of samples (i.e. number of ADC sample frequency clock cycles). * Decay Time determines how quickly the PGA gain is increased when the output signal level falls below the target level due to reduction in input signal level. Wide range of decay time programmability is supported in terms of number of samples (i.e., number of ADC sample frequency clock cycles). * Gain Hysteresis is the hysteresis applied to the required gain calculated by the AGC function while changing its mode of operation from attack to decay or vice-versa. For example, while attacking the input signal, if the current applied gain by the AGC is x dB, and suddenly because of input level going down, the new calculated required gain is y dB, then this gain is applied provided y is greater than x by the value set in Gain Hysteresis. This feature avoids the condition when the AGC function can fluctuate between a very narrow band of gains leading to audible artifacts. The Gain Hysteresis can be adjusted or disabled by the user. * Noise threshold determines the level below which if the input signal level falls, the AGC considers it as silence, and thus brings down the gain to 0 dB in steps of 0.5 dB every FS and sets the noise threshold flag. The gain stays at 0 dB unless the input speech signal average rises above the noise threshold setting. This ensures that noise is not 'gained up' in the absence of speech. Noise threshold level in the AGC algorithm is programmable from -30dB to -90 dB of full-scale. When AGC Noise Threshold is set to -70dB, -80db, or -90dB, the microphone input Max PGA applicable setting must be greater than or equal to 11.5dB, 21.5dB, or 31.5dB respectively. This operation includes hysteresis and debounce to avoid the AGC gain from cycling between high gain and 0 dB when signals are near the noise threshold level. The noise (or silence) detection feature can be entirely disabled by the user. * Max PGA applicable allows the designer to restrict the maximum gain applied by the AGC. This can be used for limiting PGA gain in situations where environmental noise is greater than the programmed noise threshold. Microphone input Max PGA can be programmed from 0 dB to 63.5 dB in steps of 0.5 dB. * Hysteresis, as the name suggests, determines a window around the Noise Threshold which must be exceeded to either detect that the recorded signal is indeed noise or signal. If initially the energy of the recorded signal is greater than the Noise Threshold, then the AGC recognizes it as noise only when the energy of the recorded signal falls below the Noise Threshold by a value given by Hysteresis. Similarly, after the recorded signal is recognized as noise, for the AGC to recognize it as a signal, its energy must exceed the Noise Threshold by a value given by the Hysteresis setting. In order to prevent the AGC from jumping between noise and signal states, (which can happen when the energy of recorded signal is very close to the Noise threshold) a non-zero hysteresis value should be chosen. The Hysteresis feature can also be disabled. * Debounce Time (Noise and Signal) determines the hysteresis in time domain for noise detection. The AGC continuously calculates the energy of the recorded signal. If the calculated energy is less than the set Noise Threshold, then the AGC does not increase the input gain to achieve the Target Level. However, to handle audible artifacts which can occur when the energy of the input signal is very close to the Noise Threshold, the AGC checks if the energy of the recorded signal is less than the Noise Threshold for a time greater than the Noise Debounce Time. Similarly the AGC starts increasing the input-signal gain to reach the Target Level when the calculated energy of the input signal is greater 42 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com * * * * * SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 than the Noise Threshold. Again, to avoid audible artifacts when the input-signal energy is very close to Noise Threshold, the energy of the input signal needs to continuously exceed the Noise Threshold value for the Signal Debounce Time. If the debounce times are kept very small, then audible artifacts can result by rapid enabling and disabling the AGC function. At the same time, if the Debounce time is kept too large, then the AGC may take time to respond to changes in levels of input signals with respect to Noise Threshold. Both noise and signal debounce time can be disabled. The AGC Noise Threshold Flag is a read-only flag indicating that the input signal has levels lower than the Noise Threshold, and thus is detected as noise (or silence). In such a condition the AGC applies a gain of 0 dB. Gain Applied by AGC is a ready-only register setting which gives a real-time feedback to the system on the gain applied by the AGC to the recorded signal. This, along with the Target Setting, can be used to determine the input signal level. In a steady state situation Target Level (dB ) = Gain Applied by AGC (dB) + Input Signal Level (dB) When the AGC noise threshold flag is set, then the status of gain applied by AGC should be ignored. The AGC Saturation Flag is a read-only flag indicating that the ADC output signal has not reached its Target Level. However, the AGC is unable to increase the gain further because the required gain is higher than the Maximum Allowed PGA gain. Such a situation can happen when the input signal has very low energy and the Noise Threshold is also set very low. When the AGC noise threshold flag is set, the status of AGC saturation flag should be ignored. The ADC Saturation Flag is a read-only flag indicating an overflow condition in the ADC channel. On overflow, the signal is clipped and distortion results. This typically happens when the AGC Target Level is kept very high and the energy in the input signal increases faster than the Attack Time. An AGC low-pass filter is used to help determine the average level of the input signal. This average level is compared to the programmed detection levels in the AGC to provide the correct functionality. This low pass filter is in the form of a first-order IIR filter. Three 8-bit registers are used to form the 24-bit digital coefficient as shown on the register map. In this way, a total of 9 registers are programmed to form the 3 IIR coefficients. The transfer function of the filter implemented for signal level detection is given by H( z) = N0 + N1z -1 2 23 - D1z -1 (5-1) Where: Coefficient N0 can be programmed by writing into Page 8, Register 12, 13 and 14. Coefficient N1 can be programmed by writing into Page 8, Register 16, 17 and 18. Coefficient D1 can be programmed by writing into Page 8, Register 20, 21 and 22. N0, N1 and D1 are 24-bit 2's complement numbers and their default values implement a low-pass filter with cut-off at 0.002735*ADC_FS . See Table 5-3 for various AGC programming options. AGC can be used only if analog microphone input is routed to the ADC channel. Table 5-3. AGC Parameter Settings Function Control Register Left ADC Control Register Right ADC Bit AGC enable Page 0, Register 86 Page 0,Register 94 D(7) Target Level Page 0, Register 86 Page 0, Register 94 D(6:4) Gain Hysteresis Page 0, Register 86 Page 0, Register 94 D(1:0) Hysteresis Page 0, Register 87 Page 0, Register 95 D(7:6) Noise threshold Page 0, Register 87 Page 0, Register 95 D(5:1) Max PGA applicable Page 0, Register 88 Page 0, Register 96 D(6:0) Time constants (attack time) Page 0, Register 89 Page 0, Register 97 D(7:0) Time constants(decay time) Page 0, Register 90 Page 0, Register 98 D(7:0) Submit Documentation Feedback Application Information 43 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Table 5-3. AGC Parameter Settings (continued) Function Control Register Left ADC Control Register Right ADC Bit Debounce time (Noise) Page 0, Register 91 Page 0, Register 99 D(4:0) Debounce time (Signal) Page 0, Register 92 Page 0, Register 100 D(3:0) Gain applied by AGC Page 0, Register 93 Page 0, Register 101 D(7:0) (Read Only) AGC Noise Threshold Flag Page 0, Register 45 (sticky flag), Page 0, Register 47 (non-sticky flag) Page 0, Register 45 (sticky flag), Page 0, Register 47 (non-sticky flag) D(6:5) (Read Only) AGC Saturation flag Page 0, Register 36 (sticky flag) Page 0, Register 36 (sticky flag) D(5), D(1) (Read Only) ADC Saturation flag Page 0, Register 42 (sticky flag), Page 0, Register 43 (non-sticky flag) Page 0, Register 42 (sticky flag), Page 0, Register 43 (non-sticky flag) D(3:2) (Read Only) Input Signal Output Signal Target Level AGC Gain Decay Time Attack Time Figure 5-3. AGC Characteristics 44 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.8 ADC Decimation Filtering and Signal Processing The TLV320AIC3204 ADC channel includes a built-in digital decimation filter to process the oversampled data from the sigma-delta modulator to generate digital data at Nyquist sampling rate with high dynamic range. The decimation filter can be chosen from three different types, depending on the required frequency response, group delay and sampling rate. 5.8.1 Processing Blocks The TLV320AIC3204 offers a range of processing blocks which implement various signal processing capabilities along with decimation filtering. These processing blocks give users the choice of how much and what type of signal processing they may use and which decimation filter is applied. The choice between these processing blocks is part of the PowerTune strategy to balance power conservation and signal-processing flexibility. Less signal-processing capability reduces the power consumed by the device. Table 5-4 gives an overview of the available processing blocks of the ADC channel and their properties. The Resource Class Column (RC) gives an approximate indication of power consumption. The signal processing blocks available are: * First-order IIR * Scalable number of biquad filters * Variable-tap FIR filter * AGC The processing blocks are tuned for common cases and can achieve high anti-alias filtering or low-group delay in combination with various signal processing effects such as audio effects and frequency shaping. The available first order IIR, BiQuad and FIR filters have fully user programmable coefficients. Table 5-4. ADC Processing Blocks Processing Blocks Channel Decimation Filter 1st Order IIR Available Number BiQuads FIR Required AOSR Value Resource Class PRB_R1 Stereo A Yes 0 No 128,64 6 PRB_R2 Stereo A Yes 5 No 128,64 8 PRB_R3 Stereo A Yes 0 25-Tap 128,64 8 PRB_R4 Right A Yes 0 No 128,64 3 PRB_R5 Right A Yes 5 No 128,64 4 PRB_R6 Right A Yes 0 25-Tap 128,64 4 PRB_R7 Stereo B Yes 0 No 64 3 PRB_R8 Stereo B Yes 3 No 64 4 PRB_R9 Stereo B Yes 0 20-Tap 64 4 PRB_R10 Right B Yes 0 No 64 2 PRB_R11 Right B Yes 3 No 64 2 PRB_R12 Right B Yes 0 20-Tap 64 2 PRB_R13 Right C Yes 0 No 32 3 PRB_R14 Stereo C Yes 5 No 32 4 PRB_R15 Stereo C Yes 0 25-Tap 32 4 PRB_R16 Right C Yes 0 No 32 2 PRB_R17 Right C Yes 5 No 32 2 PRB_R18 Right C Yes 0 25-Tap 32 2 Submit Documentation Feedback Application Information 45 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.8.2 www.ti.com Processing Blocks - Details 5.8.2.1 1st order IIR, AGC, Filter A From Delta-Sigma Modulator or Digital Microphone Filter A AGC Gain Compen Sation st 1 Order IIR To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-4. Signal Chain for PRB_R1 and PRB_R4 5.8.2.2 5 Biquads, 1st order IIR, AGC, Filter A From Delta-Sigma Modulator or Digital Microphone HA Filter A HB HC HD HE st 1 Order IIR AGC Gain Compen sation To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-5. Signal Chain PRB_R2 and PRB_R5 5.8.2.3 25 Tap FIR, 1st order IIR, AGC, Filter A From Delta-Sigma Modulator or Digital Microphone st Filter A 25-Tap FIR 1 Order IIR AGC Gain Compen sation To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-6. Signal Chain for PRB_R3 and PRB_R6 5.8.2.4 1st order IIR, AGC, Filter B From Delta-Sigma Modulator or Digital Microphone st Filter B 1 Order IIR AGC Gain Compen sation To Audio Interface To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-7. Signal Chain for PRB_R7 and PRB_R10 46 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.8.2.5 3 Biquads, 1st order IIR, AGC, Filter B From Delta-Sigma Modulator or Digital Microphone HA Filter B HB HC AGC Gain Compen sation 1stOrder IIR To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-8. Signal Chain for PRB_R8 and PRB_R11 5.8.2.6 20 Tap FIR, 1st order IIR, AGC, Filter B From Delta-Sigma Modulator or Digital Microphone AGC Gain Compen sation st 20-Tap FIR Filter B 1 Order IIR To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-9. Signal Chain for PRB_R9 and PRB_R12 5.8.2.7 1st order IIR, AGC, Filter C From Delta-Sigma Modulator or Digital Microphone Filter C st 1 Order IIR AGC Gain Compen sation To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-10. Signal Chain for PRB_R13 and PRB_R16 Submit Documentation Feedback Application Information 47 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.8.2.8 5 Biquads, 1st order IIR, AGC, Filter C From Delta-Sigma Modulator or Digital Microphone HA Filter C HB HC HD HE st 1 Order IIR AGC Gain Compen sation To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-11. Signal Chain for PRB_R14 and PRB_R17 5.8.2.9 25 Tap FIR, 1st order IIR, AGC, Filter C From Delta-Sigma Modulator or Digital Microphone AGC Gain Compen sation st Filter C 25-Tap FIR 1 Order IIR To Audio Interface AGC From Digital Vol. Ctrl To Analog PGA Figure 5-12. Signal for PRB_R15 and PRB_R18 5.8.3 User Programmable Filters Depending on the selected processing block, different types and orders of digital filtering are available. A 1st-order IIR filter is always available, and is useful to efficiently filter out possible DC components of the signal. Up to 5 biquad section or alternatively up to 25-tap FIR filters are available for specific processing blocks. The coefficients of the available filters are arranged as sequentially indexed coefficients in two banks. If adaptive filtering is chosen, the coefficient banks can be switched on-the-fly. For more details on adaptive filtering see Section 5.9.7 below. The coefficients of these filters are each 24-bits wide, in two's-complement and occupy 3 consecutive 8-bit registers in the register space. For default values please see . 5.8.3.1 1st Order IIR Section The transfer function for the first order IIR Filter is give by [equation not in source] H( z) = N0 + N1z -1 2 23 - D1z -1 (5-2) st The frequency response for the 1 order IIR Section with default coefficients is flat at a gain of 0dB. Table 5-5. ADC 1st order IIR Filter Coefficients Filter 1st Order IIR 48 Application Information FIlter Coefficient ADC Coefficient Left Channel ADC Coefficient Right Channel N0 C4 (Pg 8,Reg 24,25,26) C36 (Pg 9,Reg 32,33,34) N1 C5 (Pg 8,Reg 28,29,30) C37 (Pg 9,Reg 36,37,38) D1 C6 (Pg 8,Reg 32,33,34) C39 (Pg 9,Reg 40,41,42) Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.8.3.2 Biquad Section The transfer function of each of the Biquad Filters is given by H( z ) = N0 + 2 * N1z -1 + N2 z -2 2 23 - 2 * D1z -1 - D 2 z -2 (5-3) The frequency response for each of the biquad section with default coefficients is flat at a gain of 0dB. Table 5-6. ADC Biquad Filter Coefficients Filter FIlter Coefficient BIQUAD A BIQUAD B BIQUAD C BIQUAD D BIQUAD E Submit Documentation Feedback ADC Coefficient Left Channel ADC Coefficient Right Channel N0 C7 (Pg 8, Reg 36,37,38) C39 (Pg 9, Reg 44,45,46) N1 C8 (Pg 8, Reg 40,41,42) C40 (Pg 9, Reg 48,49,50) N2 C9 (Pg 8, Reg 44,45,46) C41 (Pg 9, Reg 52,53,54) D1 C10 (Pg 8, Reg 48,49,50) C42 (Pg 9, Reg 56,57,58) D2 C11 (Pg 8, Reg 52,53,54) C43 (Pg 9, Reg 60,61,62) N0 C12 (Pg 8, Reg 56,57,58) C44 (Pg 9, Reg 64,65,66) N1 C13 (Pg 8, Reg 60,61,62) C45 (Pg 9, Reg 68,69,70) N2 C14 (Pg 8, Reg 64,65,66) C46 (Pg 9, Reg 72,73,74) D1 C15 (Pg 8, Reg 68,69,70) C47 (Pg 9, Reg 76,77,78) D2 C16 (Pg 8, Reg 72,73,74) C48 (Pg 9, Reg 80,81,82) N0 C17 (Pg 8, Reg 76,77,78) C49 (Pg 9, Reg 84,85,86) N1 C18 (Pg 8, Reg 80,81,82) C50 (Pg 9, Reg 88,89,90) N2 C19 (Pg 8, Reg 84,85,86) C51 (Pg 9, Reg 92,93,94) D1 C20 (Pg 8, Reg 88,89,90) C52 (Pg 9, Reg 96,97,98) D2 C21 (Pg 8, Reg 92,93,94) C53 (Pg 9, Reg 100,101,102) N0 C22 (Pg 8, Reg 96,97,98) C54 (Pg 9, Reg 104,105,106) N1 C23 (Pg 8, Reg 100,101,102) C55 (Pg 9, Reg 108,109,110) N2 C24 (Pg 8, Reg 104,105,106) C56 (Pg 9, Reg 112,113,114) D1 C25 (Pg 8, Reg 108,109,110) C57 (Pg 9, Reg 116,117,118) D2 C26 (Pg 8, Reg 112,113,114) C58 (Pg 9, Reg 120,121,122) N0 C27 (Pg 8, Reg 116,117,118) C59 (Pg 9, Reg 124,125,126) N1 C28 (Pg 8, Reg 120,121,122) C60 (Pg 10, Reg 8,9,10) N2 C29 (Pg 8, Reg 124,125,126) C61 (Pg 10, Reg 12,13,14) D1 C30 (Pg 9, Reg 8,9,10) C62 (Pg 10, Reg 16,17,18) D2 C31 (Pg 9, Reg 12,13,14) C63 (Pg 10, Reg 20,21,22) Application Information 49 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.8.3.3 FIR Section Six of the available ADC processing blocks offer FIR filters for signal processing. PRB_R9 and PRB_R12 feature a 20-tap FIR filter while the processing blocks PRB_R3, PRB_R6, PRB_R15 and PRB_R18 feature a 25-tap FIR filter M H( z ) = a Firn z -n n =0 M = 24, for PRB_R3, PRB_R6, PRB_R15 and PRB_R18 M = 19, for PRB_R9 and PRB_R12 (5-4) The coefficients of the FIR filters are 24-bit 2's complement format and correspond to the ADC coefficient space as listed below. There is no default transfer function for the FIR filter. When the FIR filter gets used all applicable coefficients must be programmed. Table 5-7. ADC FIR Filter Coefficients 5.8.4 Filter FIlter Coefficient Left ADC Channel Filter Coefficient Right ADC Channel Fir0 C7 (Pg 8, Reg 36,37,38) C39 (Pg 9, Reg 44,45,46) Fir1 C8 (Pg 8, Reg 40,41,42) C40 (Pg 9, Reg 48,49,50) Fir2 C9 (Pg 8, Reg 44,45,46) C41 (Pg 9, Reg 52,53,54) Fir3 C10 (Pg 8, Reg 48,49,50) C42 (Pg 9, Reg 56,57,58) Fir4 C11 (Pg 8, Reg 52,53,54) C43 (Pg 9, Reg 60,61,62) Fir5 C12 (Pg 8, Reg 56,57,58) C44 (Pg 9, Reg 64,65,66) Fir6 C13 (Pg 8, Reg 60,61,62) C45 (Pg 9, Reg 68,69,70) Fir7 C14 (Pg 8, Reg 64,65,66) C46 (Pg 9, Reg 72,73,74) Fir8 C15 (Pg 8, Reg 68,69,70) C47 (Pg 9, Reg 76,77,78) Fir9 C16 (Pg 8, Reg 72,73,74) C48 (Pg 9, Reg 80,81,82) Fir10 C17 (Pg 8, Reg 76,77,78) C49 (Pg 9, Reg 84,85,86) Fir11 C18 (Pg 8, Reg 80,81,82) C50 (Pg 9, Reg 88,89,90) Fir12 C19 (Pg 8, Reg 84,85,86) C51 (Pg 9, Reg 92,93,94) Fir13 C20 (Pg 8, Reg 88,89,90) C52 (Pg 9, Reg 96,97,98) Fir14 C21 (Pg 8, Reg 92,93,94) C53 (Pg 9, Reg 100,101,102) Fir15 C22 (Pg 8, Reg 96,97,98) C54 (Pg 9, Reg 104,105,106) Fir16 C23 (Pg 8, Reg 100,101,102) C55 (Pg 9, Reg 108,109,110) Fir17 C24 (Pg 8, Reg 104,105,106) C56 (Pg 9, Reg 112,113,114) Fir18 C25 (Pg 8, Reg 108,109,110) C57 (Pg 9, Reg 116,117,118) Fir19 C26 (Pg 8, Reg 112,113,114) C58 (Pg 9, Reg 120,121,122) Fir20 C27 (Pg 8, Reg 116,117,118) C59 (Pg 9, Reg 124,125,126) Fir21 C28 (Pg 8, Reg 120,121,122) C60 (Pg 10, Reg 8,9,10) Fir22 C29 (Pg 8, Reg 124,125,126) C61 (Pg 10, Reg 12,13,14) Fir23 C30 (Pg 9, Reg 8,9,10) C62 (Pg 10, Reg 16,17,18) Fir24 C31 (Pg 9, Reg 12,13,14) C63 (Pg 10, Reg 20,21,22) Decimation Filter The TLV320AIC3204 offers 3 different types of decimation filters. The integrated digital decimation filter removes high-frequency content and down samples the audio data from an initial sampling rate of AOSR*Fs to the final output sampling rate of Fs. The decimation filtering is achieved using a higher-order CIC filter followed by linear-phase FIR filters. The decimation filter cannot be chosen by itself, it is implicitly set through the chosen processing block. The following subsections describe the properties of the available filters A, B and C. 50 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.8.4.1 Decimation Filter A This filter is intended for use at sampling rates up to 48kHz. When configuring this filter, the oversampling ratio of the ADC can either be 128 or 64. For highest performance the oversampling ratio must be set to 128. Please also refer to the PowerTune chapter for details on performance and power in dependency of AOSR. Filter A can also be used for 96kHz at an AOSR of 64. Table 5-8. ADC Decimation Filter A, Specification Parameter Condition Value (Typical) Units Filter Gain Pass Band 0...0.39 Fs 0.062 dB Filter Gain Stop Band 0.55...64Fs -73 dB AOSR = 128 Filter Group Delay 17/Fs Sec. Pass Band Ripple, 8 ksps 0...0.39 Fs 0.062 dB Pass Band Ripple, 44.1 ksps 0...0.39 Fs 0.05 dB Pass Band Ripple, 48 ksps 0...0.39 Fs 0.05 dB Filter Gain Pass Band 0...0.39 Fs 0.062 dB Filter Gain Stop Band 0.55...32Fs -73 dB 17/Fs Sec. AOSR = 64 Filter Group Delay Pass Band Ripple, 8 ksps 0...0.39 Fs 0.062 dB Pass Band Ripple, 44.1 ksps 0...0.39 Fs 0.05 dB Pass Band Ripple, 48 ksps 0...0.39 Fs 0.05 dB Pass Band Ripple, 96 ksps 0...20kHz 0.1 dB ADC Channel Response for Decimation Filter A (Red line corresponds to -73 dB) 0 -10 Magnitude - dB -20 -30 -40 -50 -60 -70 -80 -90 -100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 Frequency Normalized w.r.t. FS 2 Figure 5-13. ADC Decimation Filter A, Frequency Response Submit Documentation Feedback Application Information 51 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.8.4.2 Decimation Filter B Filter B is intended to support sampling rates up to 96kHz at a oversampling ratio of 64. Table 5-9. ADC Decimation Filter B, Specifications Parameter Condition Value (Typical) Units Filter Gain Pass Band 0...0.39Fs 0.077 dB Filter Gain Stop Band 0.60Fs...32Fs -46 dB 11/Fs Sec. AOSR = 64 Filter Group Delay Pass Band Ripple, 8 ksps 0...0.39Fs 0.076 dB Pass Band Ripple, 44.1 ksps 0...0.39Fs 0.06 dB Pass Band Ripple, 48 ksps 0...0.39Fs 0.06 dB Pass Band Ripple, 96 ksps 0...20kHz 0.11 dB 0 ADC Channel Response for Decimation Filter A (Red line corresponds to -44 dB) -10 Magnitude - dB -20 -30 -40 -50 -60 -70 -80 -90 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 Frequency Normalized w.r.t. FS 2 Figure 5-14. ADC Decimation Filter B, Frequency Response 52 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.8.4.3 Decimation Filter C Filter type C along with AOSR of 32 is specially designed for 192ksps operation for the ADC. The pass band which extends up to 0.11*Fs ( corresponds to 21kHz), is suited for audio applications. Table 5-10. ADC Decimation Filter C, Specifications Parameter Condition Value (Typical) Units Filter Gain from 0 to 0.11Fs 0...0.11Fs 0.033 dB Filter Gain from 0.28Fs to 16Fs 0.28Fs...16Fs -60 dB 11/Fs Sec. Filter Group Delay Pass Band Ripple, 8 ksps 0...0.11Fs 0.033 dB Pass Band Ripple, 44.1 ksps 0...0.11Fs 0.033 dB Pass Band Ripple, 48 ksps 0...0.11Fs 0.032 dB Pass Band Ripple, 96 ksps 0...0.11Fs 0.032 dB Pass Band Ripple, 192 ksps 0...20kHz 0.086 dB 0 ADC Channel Response for Decimation Filter C (Red line corresponds to -60 dB) Magnitude - dB -20 -40 -60 -80 -100 -120 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 Frequency Normalized w.r.t. FS 2 Figure 5-15. ADC Decimation Filter C, Frequency Response 5.8.5 ADC Data Interface The decimation filter and signal processing block in the ADC channel passes 32-bit data words to the audio serial interface once every cycle of Fs,ADC. During each cycle of Fs,ADC, a pair of data words ( for left and right channel ) are passed. The audio serial interface rounds the data to the required word length of the interface before converting to serial data as per the different modes for audio serial interface. Submit Documentation Feedback Application Information 53 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.9 ADC Special Functions 5.9.1 Microphone Bias The TLV320AIC3204 has a built-in low noise Microphone Bias support for electret-condenser microphones. The Bias amplifier can support up to 3mA of load current to support multiple microphones. The Bias amplifier has been designed to provide a combination of high PSRR, low noise and programmable bias voltages to allow the user to fine tune the biasing to specific microphone combinations. To support a wide range of bias voltages, the bias amplifier can work of either a low analog supply or high LDOIN supply. Table 5-11. MICBIAS Voltage Control Page 1, Reg 51, D(5:4) Page 1, Reg 10, D(6) Page 1, Reg 51, D(3) 00 0 X 1.0V 00 1 X 1.25V 01 0 X 1.4V 01 1 X 1.7V 10 0 1 2.1V 10 1 1 2.5V 11 X 0 AVdd 11 X 1 LDOIN 5.9.2 MICBIAS Voltage (without load) Digital Microphone Function In addition to supporting analog microphones, the TLV320AIC3204 also interfaces to digital microphones. - DIG_MIC_IN LEFT ADC CIC FILTER Signal Processing Blocks - RIGHT ADC CIC FILTER ADC_MOD_CLK MISO GPIO DIN SCLK Figure 5-16. Digital Microphone in TLV320AIC3204 The TLV320AIC3204 outputs internal clock ADC_MOD_CLK on GPIO pin ( Page 0, Register 51, D(5:2)) or MISO pin (Page 0, Register 55, D(4:1)). This clock can be connected to the external digital microphone device. The single-bit output of the external digital microphone device can be connected to GPIO, DIN or SCLK pins. Internally the TLV320AIC3204 latches the steady value of data on the rising edge of ADC_MOD_CLK for the Left ADC channel, and the steady value of data on falling edge for the Right ADC channel. 54 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 ADC_MOD_CLK DIG_MIC_IN LEFT RIGHT RIGHT LEFT LEFT RIGHT Figure 5-17. Timing Diagram for Digital Microphone Interface The digital-microphone mode can be selectively enabled for only-left, only-right, or stereo channels. When the digital microphone mode is enabled, the analog section of the ADC can be powered down and bypassed for power efficiency. The AOSR value for the ADC channel must be configured to select the desired decimation ratio to be achieved based on the external digital microphone properties. 5.9.3 Channel-to-Channel Phase Adjustment The TLV320AIC3204 has a built-in feature to fine-adjust the phase between the stereo ADC record signals. The phase compensation is particularly helpful to adjust delays when using dual microphones for noise cancellation etc. This delay can be controlled in fine amounts in the following fashion. Delay(7:0) = Page 0/Register 85/D(7:0) Where RIGHT _ ADC _ PHASE _ COMP ( t ) = RIGHT _ ADC _ OUT( t - t pr ) (5-5) where t pr = (Delay( 4 : 0) + Delay(6 : 5) * AOSR * k f ) AOSR * ADC _ FS Where kf is a function of the decimation filter: Decimation Filter Type kf A 0.25 B 0.5 C 1 and LEFT _ ADC _ PHASE _ COMP ( t ) = LEFT _ ADC _ OUT ( t - t pl ) (5-6) Where t pl = 5.9.4 Delay (7) AOSR * ADC _ FS (5-7) DC Measurement The TLV320AIC3204 supports a highly flexible DC measurement feature using the high resolution oversampling and noise-shaping ADC. This mode can be used when the particular ADC channel is not used for the voice/audio record function. This mode can be enabled by programming Page 0, Register 102, D(7:6). The converted data is 24-bits, using 2.22 numbering format. The value of the converted data for the left-channel ADC can be read back from Page 0, Register 104-106 and for the right-channel ADC from Page 0, Register 107-109. Before reading back the converted data, Page 0, Register 103, D(7:6) must be programmed to latch the converted data into the read-back register. After the converted data is read back, Page 0, Register 103, D(7:6) must be reset to 00 immediately. In DC measurement mode, two measurement methods are supported. Mode A Submit Documentation Feedback Application Information 55 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com In DC-measurement mode A, a variable-length averaging filter is used. The length of the averaging filter D, can be programmed from 1 to 20 by programming Page 0, Register 100, D(4:0). To choose mode A, Page 0, Register 102, D(5) must be programmed to 0. Mode B To choose mode B Page 0, Register 102, D(5) must be programmed to 1. In DC-measurement mode B, a first-order IIR filter is used. The coefficients of this filter are determined by D, Page 0, Register 102, D(4:0). The nature of the filter is given in the table below Table 5-12. DC Measurement Bandwidth Settings D:Page 0, Reg 102 , D(4:0) -3 dB BW (kHz) -0.5 dB BW (kHz) 1 688.44 236.5 2 275.97 96.334 3 127.4 44.579 4 61.505 21.532 5 30.248 10.59 6 15.004 5.253 7 7.472 2.616 8 3.729 1.305 9 1.862 652 10 931 326 11 465 163 12 232.6 81.5 13 116.3 40.7 14 58.1 20.3 15 29.1 10.2 16 14.54 5.09 17 7.25 2.54 18 3.63 1.27 19 1.8 0.635 20 0.908 0.3165 By programming Page 0, Reg 103, D(5) to `1', the averaging filter is periodically reset after 2^R number of ADC_MOD_CLK, where R is programmed in Page 0, Reg 103, D(4:0). When Page 0, Reg 103, D(5) is set to 1 then the value of D should be less than the value of R. When Page 0, Reg 103, D(5) is programmed as 0 the averaging filter is never reset. 5.9.5 Fast Charging AC Capacitors The value of the coupling capacitor must be so chosen that the high-pass filter formed by the coupling capacitor and the input impedance do not affect the signal content. At power-up, before proper recording can begin, this coupling capacitor must be charged up to the common-mode voltage. To enable quick charging, the TLV320AIC3204 has modes to speed up the charging of the coupling capacitor. These are controlled by controlling Page 1, Register 71, D(5:0). 5.9.6 Anti Thump For normal voice or audio recording, the analog input pins of the TLV320AIC3204, must be AC-coupled to isolate the DC-common mode voltage of the driving circuit from the common-mode voltage of the TLV320AIC3204. When the analog inputs are not selected for any routing, the input pins are 3-stated and the voltage on the pins is undefined. When the unselected inputs are selected for any routing, the input pins must charge from the undefined voltage to the input common-mode voltage. This charging signal can cause audible 56 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 artifacts. In order to avoid such artifacts the TLV320AIC3204 also incorporates anti-thump circuitry to allow connection of unused inputs to the common-mode level. This feature is disabled by default, and can be enabled by writing the appropriate value into Page 1, Register 58, D(7:2). The use of this feature in combination with the PTM_R1 setting in Page 0, Register 61 when the ADC channel is powered down causes the additional current consumption of 700A from AVdd and 125A from DVdd in the sleep mode. 5.9.7 Adaptive Filtering After the ADC is running, the filter coefficients are locked and cannot be accessed for read or write. However the TLV320AIC3204 offers an adaptive filter mode as well. Setting Register Page 8,Reg 1, D(2)=1 turns on double buffering of the coefficients. In this mode filter coefficients can be updated through the host and activated without stopping and restarting the ADC, enabling advanced adaptive filtering applications. To support double buffering, all coefficients are stored in two buffers (Buffer A and B). When the ADC is running and adaptive filtering mode is turned on, setting the control bit Page 8, Reg 1,D(0)=1 switches the coefficient buffers at the next start of a sampling period. The bit reverts to 0 after the switch occurs. At the same time, the flag Page 8, Reg 1, D(1) toggles. The flag in Page 8, Reg 1, D(1) indicates which of the two buffers is actually in use. Page 8, Reg 1, D(1)=0: Buffer A is in use by the ADC engine, D(1)=1: Buffer B is in use. While the device is running, coefficient updates are always made to the buffer not in use by the ADC, regardless to which buffer the coefficients have been written ADC running Flag, Page 8, Reg 1, D(1) Coefficient Buffer in use Writing to Will update No 0 None C4, Buffer A C4, Buffer A No 0 None C4, Buffer B C4, Buffer B Yes 0 Buffer A C4, Buffer A C4, Buffer B Yes 0 Buffer A C4, Buffer B C4, Buffer B Yes 1 Buffer B C4, Buffer A C4, Buffer A Yes 1 Buffer B C4, Buffer B C4, Buffer A Submit Documentation Feedback Application Information 57 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.10 ADC Setup The following discussion is intended to guide a system designer through the steps necessary to configure the TLV320AIC3204 ADC. Step 1 The system clock source (master clock) and the targeted ADC sampling frequency must be identified. Depending on the targeted performance, the decimation filter type (A, B or C) and OSR value can be determined. * Filter A with AOSR of 128 should be used for 48kHz high performance operation. * Filter B with AOSR of 64 should be used for 96kHz operations. In conjunction with a common mode setting of 0.75V and PTM_R1 this can also be used for 48kHz PowerTune operation. * Filter C with AOSR of 32 should be used for 192kHz operations Based on the identified filter type and the required signal processing capabilities the appropriate processing block can be determined from the list of available processing blocks (PRB_R1 to PRB_R18) (See Table 5-4). Based on the available master clock, the chosen OSR and the targeted sampling rate, the clock divider values NADC and MADC can be determined. If necessary the internal PLL will add a large degree of flexibility. In summary, Codec_Clkin which is either derived directly from the system clock source or from the internal PLL, divided by MADC, NADC and AOSR, must be equal to the ADC sampling rate ADC_FS. The Clodec_Clkin clock signal is shared with the DAC clock generation block. CODEC_CLKIN = NADC*MADC*AOSR*ADC_FS To a large degree NADC and MADC can be chosen independently in the range of 1 to 128. In general NADC should be as large as possible as long as the following condition can still be met: MADC*AOSR/32 RC RC is a function of the chosen processing block and is listed in the Table 5-4 Overview Processing Blocks The common mode setting of the device is determined by the available analog power supply and the desired PowerTune mode, this common mode setting is shared across ADC, DAC (input common mode) and analog bypass path. At this point the following device specific parameters are known: PRB_Rx, AOSR, NADC, MADC, common mode setting Additionally if the PLL is used the PLL parameters P, J, D and R are determined as well. 58 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Step 2 Setting up the device via register programming: The following list gives a sequence of items that must be executed between powering the device up and reading data from the device: Define starting point: Set register page to 0 Initiate SW Reset Program Clock Settings Program PLL clock dividers P,J,D,R (if PLL is necessary) Power up PLL (if PLL is necessary) Program and power up NADC Program and power up MADC Program OSR value Program the processing block to be used At this point, at the latest, analog power supply must be applied to the device ( via internal LDO or external) Program Analog Blocks Set register Page to 1 Disable coarse AVdd generation Enable Master Analog Power Control Program Common Mode voltage Program PowerTune (PTM) mode Program MicPGA startup delay Program Reference fast charging Routing of inputs/common mode to ADC input Unmute analog PGAs and set analog gain Power Up ADC Set register Page to 0 Power up ADC Channels Unmute digital volume control A detailed example can be found in Section 5.22. Submit Documentation Feedback Application Information 59 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.11 DAC The TLV320AIC3204 includes a stereo audio DAC supporting data rates from 8kHz to 192kHz. Each channel of the stereo audio DAC consists of a signal-processing engine with fixed processing blocks, a digital interpolation filter, multi-bit digital delta-sigma modulator, and an analog reconstruction filter. The DAC is designed to provide enhanced performance at low sampling rates through increased oversampling and image filtering, thereby keeping quantization noise generated within the delta-sigma modulator and signal images strongly suppressed within the audio band to beyond 20kHz. To handle multiple input rates and optimize power dissipation and performance, the TLV320AIC3204 allows the system designer to program the oversampling rates over a wide range from 1 to 1024 by configuring the Page 0, Reg 13, and Reg 14. The system designer can choose higher oversampling ratios for lower input data rates and lower oversampling ratios for higher input data rates. The TLV320AIC3204 DAC channel includes a built-in digital interpolation filter to generate oversampled data for the sigma delta modulator. The interpolation filter can be chosen from three different types depending on required frequency response, group delay and sampling rate. 60 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.11.1 Processing Blocks The TLV320AIC3204 implements signal processing capabilities and interpolation filtering via processing blocks. These fixed processing blocks give users the choice of how much and what type of signal processing they may use and which interpolation filter is applied. The choice between these processing blocks is part of the PowerTune strategy balancing power conservation and signal processing flexibility. Less signal processing capability will result in less power consumed by the device. The Table 5-13 gives an overview over all available processing blocks of the DAC channel and their properties. The Resource Class Column (RC) gives an approximate indication of power consumption. The signal processing blocks available are: * First-order IIR * Scalable number of biquad filters * 3D - Effect * Beep Generator The processing blocks are tuned for common cases and can achieve high image rejection or low group delay in combination with various signal processing effects such as audio effects and frequency shaping. The available first-order IIR and biquad filters have fully user-programmable coefficients. Table 5-13. Overview - DAC Predefined Processing Blocks Processing Block No. Interpolation Filter Channel 1st Order IIR Available Number of Biquads DRC 3D Beep Generator PRB_P1 A PRB_P2 A Stereo No Stereo Yes PRB_P3 PRB_P4 A Stereo A Left PRB_P5 A PRB_P6 3 No No No 8 6 Yes No No 12 Yes 6 No No No 10 No 3 No No No 4 Left Yes 6 Yes No No 6 A Left Yes 6 No No No 6 PRB_P7 B Stereo Yes 0 No No No 6 PRB_P8 B Stereo No 4 Yes No No 8 PRB_P9 B Stereo No 4 No No No 8 PRB_P10 B Stereo Yes 6 Yes No No 10 PRB_P11 B Stereo Yes 6 No No No 8 PRB_P12 B Left Yes 0 No No No 3 PRB_P13 B Left No 4 Yes No No 4 PRB_P14 B Left No 4 No No No 4 PRB_P15 B Left Yes 6 Yes No No 6 PRB_P16 B Left Yes 6 No No No 4 PRB_P17 C Stereo Yes 0 No No No 3 PRB_P18 C Stereo Yes 4 Yes No No 6 PRB_P19 C Stereo Yes 4 No No No 4 PRB_P20 C Left Yes 0 No No No 2 PRB_P21 C Left Yes 4 Yes No No 3 PRB_P22 C Left Yes 4 No No No 2 PRB_P23 A Stereo No 2 No Yes No 8 PRB_P24 A Stereo No 5 Yes Yes No 12 PRB_P25 A Stereo No 5 Yes Yes Yes 12 Submit Documentation Feedback RC Class Application Information 61 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.11.2 Processing Blocks - Details 5.11.2.1 3 Biquads, Filter A BiQuad A from Interface BiQuad B BiQuad C Interp. Filter A to Modulator Digital Volume Ctrl Figure 5-18. Signal Chain for PRB_P1 and PRB_P4 5.11.2.2 6 Biquads, 1st order IIR, DRC, Filter A or B IIR from Interface BiQuad A BiQuad B BiQuad C BiQuad D BiQuad E Interp. Filter A,B BiQuad F HPF to Modulator Digital Volume Ctrl DRC Figure 5-19. Signal Chain for PRB_P2, PRB_P5, PRB_P10 and PRB_P15 5.11.2.3 6 Biquads, 1st order IIR, Filter A or B BiQuad A IIR from Interface BiQuad B BiQuad C BiQuad D BiQuad E BiQuad F Interp. Filter A,B to Modulator Digital Volume Ctrl Figure 5-20. Signal Chain for PRB_P3, PRB_P6, PRB_P11 and PRB_P16 5.11.2.4 IIR, , Filter B or C IIR from Interface Interp. Filter B,C to Modulator Digital Volume Ctrl Figure 5-21. Signal Chain for PRB_P7, PRB_P12, PRB_P17 and PRB_P20 5.11.2.5 4 Biquads, DRC, Filter B from Interface BiQuad A BiQuad B BiQuad C BiQuad D Interp. Filter B HPF DRC to Modulator Digital Volume Ctrl Figure 5-22. Signal Chain for PRB_P8 and PRB_P13 62 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.11.2.6 4 Biquads, Filter B BiQuad A BiQuad B from Interface BiQuad C BiQuad D Interp. Filter B to Modulator Digital Volume Ctrl Figure 5-23. Signal Chain for PRB_P9 and PRB_P14 5.11.2.7 4 Biquads, 1st order IIR, DRC, Filter B BiQuad A IIR BiQuad B BiQuad C Interp. Filter C BiQuad D from Interface HPF to Modulator Digital Volume Ctrl DRC Figure 5-24. Signal Chain for PRB_P18 and PRB_P21 5.11.2.8 4 Biquads, 1st order IIR, Filter C IIR from Interface BiQuad A BiQuad B BiQuad C BiQuad D Interp. Filter C to modulator Digital Volume Ctrl Figure 5-25. Signal Chain for PRB_P19 and PRB_P22 5.11.2.9 2 Biquads, 3D, Filter A IIR Left from Left Channel Interface + BiQuad BL + BiQuad CL Interp. Filter A to Modulator + Digital Volume Ctrl + BiQuad AL + - BiQuad AR 3D PGA + from Right Channel Interface IIR Right - + BiQuad BR BiQuad CR Interp. Filter A to Modulator Digital Volume Ctrl Figure 5-26. Signal Chain for PRB_P23 Submit Documentation Feedback Application Information 63 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.11.2.10 5 Biquads, DRC, 3D, Filter A IIR from Left Left Channel Interface + + BiQuad BL BiQuad CL BiQuad DL BiQuad EL BiQuad FL Interp. Filter A to Modulator + HPF + BiQuad AL + - BiQuad AR Digital Volume Ctrl DRC 3D PGA from Right Channel Interface IIR Right + + BiQuad BR BiQuad CR BiQuad DR BiQuad ER BiQuad FR HPF Interp. Filter A to Modulator Digital Volume Ctrl DRC Figure 5-27. Signal Chain for PRB_P24 5.11.2.11 5 Biquads, DRC, 3D, Beep Generator, Filter A from left channel interface + + + IIR left BiQuad BL BiQuad CL BiQuad DL BiQuad EL BiQuad FL HPF + BiQuad AL + - BiQuad AR Interp. Filter DRC 3D PGA IIR right * Beep Gen. + + to modulator Digital Volume Ctrl Beep Volume Ctrl * - from right channel interface + BiQuad BR BiQuad CR BiQuad DR BiQuad ER BiQuad FR HPF Interp. Filter DRC + to modulator Digital Volume Ctrl Figure 5-28. Signal Chain for PRB_P25 64 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.11.3 User Programmable Filters Depending on the selected processing block, different types and orders of digital filtering are available. Up to 6 biquad sections are available for specific processing blocks. The coefficients of the available filters are arranged as sequentially-indexed coefficients in two banks. If adaptive filtering is chosen, the coefficient banks can be switched on-the-fly. For more details on adaptive filtering please see Section 5.14.3. The coefficients of these filters are each 24-bits wide, in two's-complement and occupy 3 consecutive 8-bit registers in the register space. For default values please see Section 6.6. 5.11.3.1 1st-Order IIR Section The IIR is of first-order and its transfer function is given by Figure 5-29. H( z) = N0 + N1z -1 2 23 - D1z -1 (5-8) The frequency response for the 1st order IIR Section with default coefficients is flat Table 5-14. DAC IIR Filter Coefficients Filter Filter Coefficient 1st Order IIR ADC Coefficient Left Channel ADC Coefficient Right Channel N0 C65 (Pg 46, Reg 28,29,30) C68 (Pg 46, Reg 40,41,42) N1 C66 (Pg 46. Reg 32,33,34) C69 (Pg 46, Reg 44,45,46) D1 C67 (Pg 46, Reg 36,37,38) V70 (Pg 46, Reg 48,49,50) 5.11.3.2 Biquad Section The transfer function of each of the Biquad Filters is given by H( z ) = N0 + 2 * N1z -1 + N2 z -2 2 23 - 2 * D1z -1 - D 2 z -2 (5-9) Table 5-15. DAC Biquad Filter Coefficients Filter BIQUAD A BIQUAD B BIQUAD C BIQUAD D Coefficient Left DAC Channel Right DAC Channel N0 C1 (Pg 44, Reg 12,13,14) C33 (Pg 45, Reg 20,21,22) N1 C2 (Pg 44, Reg 16,17,18) C34 (Pg 45, Reg 24,25,26) N2 C3 (Pg 44, Reg 20,21,22) C35 (Pg 45, Reg 28,29,30) D1 C4 (Pg 44, Reg 24,25,26) C36 (Pg 45, Reg 32,33,34) D2 C5 (Pg 44, Reg 28,29,30) C37 (Pg 45, Reg 36,37,38) N0 C6 (Pg 44, Reg 32,33,34) C38 (Pg 45, Reg 40,41,42) N1 C7 (Pg 44, Reg 36,37,38) C39 (Pg 45, Reg 44,45,46) N2 C8 (Pg 44, Reg 40,41,42) C40 (Pg 45, Reg 48,49,50) D1 C9 (Pg 44, Reg 44,45,46) C41 (Pg 45, Reg 52,53,54) D2 C10 (Pg 44, Reg 48,49,50) C42 (Pg 45, Reg 56,57,58) N0 C11 (Pg 44, Reg 52,53,54) C43 (Pg 45, Reg 60,61,62) N1 C12 (Pg 44, Reg 56,57,58) C44 (Pg 45, Reg 64,65,66) N2 C13 (Pg 44, Reg 60,61,62) C45 (Pg 45, Reg 68,69,70) D1 C14 (Pg 44, Reg 64,65,66) C46 (Pg 45, Reg 72,73,74) D2 C15 (Pg 44, Reg 68,69,70) C47 (Pg 45, Reg 76,77,78) N0 C16 (Pg 44, Reg 72,73,74) C48 (Pg 45, Reg 80,81,82) Submit Documentation Feedback Application Information 65 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Table 5-15. DAC Biquad Filter Coefficients (continued) Filter Coefficient BIQUAD E BIQUAD F Left DAC Channel Right DAC Channel N1 C17 (Pg 44, Reg 76,77,78) C49 (Pg 45, Reg 84,85,86) N2 C18 (Pg 44, Reg 80,81,82) C50 (Pg 45, Reg 88,89,90) D1 C19 (Pg 44, Reg 84,85,86) C51 (Pg 45, Reg 92,93,94) D2 C20 (Pg 44, Reg 88,89,90) C52 (Pg 45, Reg 96,97,98) N0 C21 (Pg 44, Reg 92,93,94) C53 (Pg 45, Reg 100,101,102) N1 C22 (Pg 44, Reg 96,97,98) C54 (Pg 45, Reg 104,105,106) N2 C23 (Pg 44, Reg 100,101,102) C55 (Pg 45, Reg 108,109,110) D1 C24 (Pg 44, Reg 104,105,106) C56 (Pg 45, Reg 112,113,114) D2 C25 (Pg 44, Reg 108,109,110) C57 (Pg 45, Reg 116,117,118) N0 C26 (Pg 44, Reg 112,113,114) C58 (Pg 45, Reg 120,121,122) N1 C27 (Pg 44, Reg 116,117,118) C59 (Pg 45, Reg 124,125,126) N2 C28 (Pg 44, Reg 120,121,122) C60 (Pg 46, Reg 8,9,10) D1 C29 (Pg 44, Reg 124,125,126) C61 (Pg 46, Reg 12,13,14) D2 C30 (Pg 45, Reg 8,9,10) C62 (Pg 46, Reg 16,17,18) 5.11.4 INTERPOLATION FILTER 5.11.4.1 Interpolation Filter A Table 5-16. DAC Interpolation Filter A, Specification Parameter Condition Value (Typical) Units Filter Gain Pass Band 0 ... 0.45Fs 0.015 dB Filter Gain Stop Band 0.55Fs... 7.455Fs -65 dB 21/Fs s Filter Group Delay DAC Channel Response for Interpolation Filter A (Red line corresponds to -65 dB) 0 -10 Magnitude - dB -20 -30 -40 -50 -60 -70 -80 -90 1 2 5 6 3 4 Frequency Normalized w.r.t. FS 7 Figure 5-30. DAC Interpolation Filter A, Frequency Response 5.11.4.2 Interpolation Filter B Filter B is specifically designed for an Fs of above 96ksps. Thus, the flat pass-band region easily covers the required audio band of 0-20kHz. 66 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Table 5-17. DAC Interpolation Filter B, Specification Parameter Condition Value (Typical) Units Filter Gain Pass Band 0 ... 0.45Fs 0.015 dB Filter Gain Stop Band 0.55Fs... 3.45Fs -58 dB 18/Fs s Filter Group Delay DAC Channel Response for Interpolation Filter B (Red line corresponds to -58 dB) 0 Magnitude - dB -10 -20 -30 -40 -50 -60 -70 -80 0.5 1 1.5 2 2.5 3 Frequency Normalized w.r.t. FS 3.5 Figure 5-31. Channel Interpolation Filter B, Frequency Response 5.11.4.3 Interpolation Filter C Filter C is specifically designed for the 192ksps mode. The pass band extends up to 0.40*Fs (corresponds to 80kHz), more than sufficient for audio applications. DAC Channel Response for Interpolation Filter C (Red line corresponds to -43 dB) 0 Magnitude - dB -10 -20 -30 -40 -50 -60 -70 0 0.2 0.4 0.6 0.8 1 1.2 Frequency Normalized w.r.t. FS 1.4 Figure 5-32. DAC Interpolation Filter C, Frequency Response The basic filter characteristics for the Interpolation Filters A, B and C are as follows. These values are at 48ksps with the droop of the analog reconstruction filters taken into account. Submit Documentation Feedback Application Information 67 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Table 5-18. DAC Interpolation Filter C, Specification Parameter Condition Value (Typical) Units Filter Gain Pass Band 0 ... 0.35Fs 0.03 dB Filter Gain Stop Band 0.60Fs... 1.4Fs -43 dB 13/Fs s Filter Group Delay 5.12 DAC Output Drivers 5.12.1 Headphone Amplifier The stereo headphone drivers on pins HPL and HPR can drive loads with impedances down to 16 in single-ended AC-coupled headphone configurations, or loads down to 32 in differential mode, where a speaker is connected between HPL and HPR. In single-ended drive configuration these drivers can drive up to 15mW power into each headphone channel while operating at 1.8V analog supplies. While running off AVdd supply the output common mode of headphone driver is set by the common mode setting of analog inputs in Page 1, Reg 10, D(6), to allow maximum utilization of the analog supply range while simultaneously providing a higher output-voltage swing. In cases when higher output-voltage swing is required, the headphone amplifiers can run directly off the higher supply voltage on LDOIN input (up to 3.6V). To use the higher supply voltage for higher output signal swing, the output common mode can be adjusted to either 1.25V, 1.5V or 1.65V by configuring Page 1, Reg 10, D(5:4). When the common-mode voltage is configured at 1.65V and LDOIN supply is 3.3V, the headphones can each deliver up to 40mW power into a 16 load. The headphone drivers are capable of driving a mixed combination of DAC signal, left and right ADC PGA signal and line-bypass from analog input IN1L and IN1R by configuring Page 1, Reg and Page 1, Reg 13 respectively. The ADC PGA signals can be attenuated up to 30dB before routing to headphone drivers by configuring Page 1, Reg 24 and Page 1, Reg 25. The line-input signals can be attenuated up to 72dB before routing by configuring Page 1, Reg 22 and 23. The level of the DAC signal can be controlled using the digital volume control of the DAC in Page 0, Reg 65 and 66. To control the output-voltage swing of headphone drivers, the digital volume control provides a range of -6.0dB to +29.0dB (1) in steps of 1dB. These can be configured by programming Page 1, Reg 16 and 17. These level controls are not meant to be used as dynamic volume control, but more to set output levels during initial device configuration. Refer to Section 5.13.1 for recommendations for using headphone volume control for achieving 0dB gain through the DAC channel with various configurations. HPL HPR Figure 5-33. Stereo Headphone Configuration (1) 68 If the device must be placed into 'mute' from the -6.0dB setting, set the device at a gain of -5.0dB first, then place the device into mute. Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Differential Loading The headphone amplifiers can be configured differentially as shown in Figure 5-34. However this scheme is supported only when using the headphone-output stage powered from the AVdd supply. HPL HPR Figure 5-34. Differential Receiver Speaker Configuration The TLV320AIC3204 supports an additional low-power mode for routing a mono DAC for a differential headphone configuration as shown in Figure 5-35. HPL LEFT_DACP LEFT DAC AFIR LEFT_DACM HPR Figure 5-35. Low Power Mono DAC to Differential Headphone The TLV320AIC3204 headphone drivers support pop-free operation. Because the HPL and HPR are high-power drivers, pop can result due to sudden transient changes in the output drivers if care is not taken. The most critical care is required while using the drivers as stereo single-ended capacitively-coupled drivers as shown in Figure 5-33. The output drivers achieve pop-free power-up by using slow power-up modes. Conceptually, the circuit during power-up can be visualized as Cc Output Driver Rpop PAD Rload Figure 5-36. Conceptual Circuit for Pop-Free Power-up The value of Rpop can be chosen by setting register Page 1, Register 20, D(1:0). Submit Documentation Feedback Application Information 69 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Table 5-19. Rpop Values Page 1, Register 20, D(1:0) Rpop Value 00 2 k 01 6 k 10 25 k To minimize audible artifacts, two parameters can be adjusted to match application requirements. The voltage Vload across Rload at the beginning of slow charging should not be more than a few mV. At that time the voltage across Rload can be determined as: V load = R load R load + R pop V cm (5-10) For a typical Rload of 32 , Rpop of 6 k or 25 k will deliver good results (see Table 5-19 for register settings). According to the conceptual circuit in Figure 5-36, the voltage on PAD will exponentially settle to the output common-mode voltage based on the value of Rpop and Cc. Thus, the output drivers must be in slow power-up mode for time T, such that at the end of the slow power-on period, the voltage on Vpad is very close to the common-mode voltage. The TLV320AIC3204 allows the time T to be adjusted to allow for a wide range of Rload and Cc by programming Page 1, Register 20, D(5:2). For the time adjustments, the value of Cc is assumed to be 47F. N=5 is expected to yield good results. Page 1, Register 20D(5:2) Slow Charging Time=N*Time Constants(for Rpop and 47F) 0000 N=0 0001 N=0.5 0010 N=0.625 0011 N=0.75 0100 N=0.875 0101 N=1.0 0110 N=2.0 0111 N=3.0 1000 N=4.0 1001 N=5.0 1010 N=6.0 1011 N=7.0 1100 N=8.0 1101 N=16 ( Not valid for Rpop=25K) 1110 N=24 ( Not valid for Rpop=25K) 1111 N=32 ( Not valid for Rpop=25K) Again for e.g., for Rload=32, Cc=47F and common mode of 0.9V the number of time constants required for pop-free operation is 5 or 6. Higher or lower value of Cc will require higher or lower value for N. During the slow-charging period, no signal is routed to the output driver. Therefore, choosing a larger than necessary value of N results in a delay from power-up to signal at output. At the same time, choosing N to be smaller than the optimal value results in poor pop performance at power-up. 70 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 The signals being routed to headphone drivers ( e.g. DAC, MAL , MAR and IN1) often have DC offsets due to less-than-ideal processing. As a result, when these signals are routed to output drivers, the offset voltage causes a pop. To improve the pop-performance in such situations, a feature is provided to soft-step the DC-offset. At the beginning of the signal routing, a high-value attenuation can be applied which can be progressively reduced in steps until the desired gain in the channel is reached. The time interval between each of these gain changes can be controlled by programming Page 1, Register 20, D(7:6). This gain soft-stepping is applied only during the initial routing of the signal to the output driver and not during subsequent gain changes. Page 1, Register 20, D(7:6) Soft-stepping Step Time During initial signal routing 00 0 ms ( soft-stepping disabled) 01 50ms 10 100ms 11 200ms It is recommended to use the following sequence for achieving optimal pop performance at power-up 1. Choose the value of Rpop, N ( time constants) and soft-stepping step time for slow power-up. 2. Choose the configuration for output drivers, including common modes and output stage power connections 3. Select the signals to be routed to headphones. 4. Power-up the blocks driving signals into HPL and HPR, but keep it muted 5. Unmute HPL and HPR and set the desired gain setting. 6. Power-on the HPL and HPR drivers. 7. Unmute the block driving signals to HPL and HPR after the Driver PGA flags are set to indicate completion of soft-stepping after power-up. These flags can be read from Page 1, Register 63, D(7:6). It is important to configure the Headphone Output driver depop control registers before powering up the headphone; these register contents should not be changed when the headphone drivers are powered up. Before powering down the HPL and HPR drivers, it is recommended that user read back the flags in Page 1, Register 63. For example. before powering down the HPL driver, ensure that bit D(7) = 1 and bit D(3) = 1 if IN1_L is routed to HPL and bit D(1) = 1 if the Left Mixer is routed to HPL. The output driver should be powered down only after a steady-state power-up condition has been achieved. This steady state power-up condition also must be satisfied for changing the HPL/R driver mute control in Page 1, Register 16 and 17, D(7), i.e. muting and unmuting should be done after the gain and volume controls associated with routing to HPL/R finished soft-stepping. In the differential configuration of HPL and HPR, when no coupling capacitor is used, the slow charging method for pop-free performance need not be used. In the differential load configuration for HPL and HPR, it is recommended to not use the output driver MUTE feature, because a pop may result. During the power-down state, the headphone outputs are weakly pulled to ground using an approximately 50k resistor to ground, to maintain the output voltage on HPL and HPR pins. 5.12.2 Headphone Amplifier Class-D Mode By default the headphone amplifiers in the TLV320AIC3204 work in Class-AB mode. By writing to Page 1, Register 3, D(7:6) for the left headphone amplifier, and Page 1, Register 4, D(7:6) with value 11, the headphone amplifiers enter a Class-D mode of operation. In this mode a high frequency digital pulse-train representation of the DAC signal is fed to the load connected to HPL and HPR outputs. Submit Documentation Feedback Application Information 71 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Because the output signal is a pulse train switching between Power Supply and Ground, the efficiency of the amplifier is greatly improved. In this mode however, for good noise performance, care should be taken to keep the analog power supply clean. For using the Class-D mode of operation, the following clock-divider condition should be met: MDAC = I x 4, where I = 1, 2, ..., 32 When a direct digital pulse train is driven out as a signal, high frequencies as a function of pulse train frequency are also present which lead to power waste. To increase the efficiency and reduce power dissipation in the load due to these high frequencies, an LC filter should be used in series with the output and the load. The cutoff frequency of the LC filter should be adjusted to allow audio signals below 20kHz to pass through, but highly attenuate the high-frequency signal content. L = 82 mH C = 1 mF CC = 47 mF Rload = 32 W Figure 5-37. Configuration for Using Headphone Amplifier in Class-D Mode For using the headphones in the Class-D mode of operation, the headphones should first be powered up in default Class-AB mode to charge the AC-coupling capacitor to the set common mode voltage. Once the headphone amplifiers have been so powered up, the DAC should be routed to headphones and unmuted before they can be switched to the Class-D mode. After Class D mode has been turned on, the linear, Class AB mode amplifier must be turned off. For powering down the headphone amplifiers, the DAC should first be muted. 5.12.3 Line Out Amplifier The stereo line level drivers on LOL and LOR pins can drive a wide range of line level resistive impedances in the range of 600 to 10k. The output common modes of line level drivers can be configured to equal either the analog input common-mode setting, or 1.65V by programming Page 1, Register 3, D(3). With output common-mode setting of 1.65V and LDOIN supply at 3.3V the line-level drivers can drive up to 1Vrms output signal. The line-level drivers can drive out a mixed combination of DAC signal and attenuated ADC PGA signal. The signal mixing can be configured by programming Page 1, Register 14 and 15. Additionally, the two line-level drivers can be configured to act as a mono differential line level driver by routing output of LOR to LOL ( Page 1, Register 14, D(0) = `1'). The output of DAC can be simultaneously played back to the stereo headphone drivers as well as stereo line- level drivers. In such a case, the DAC signal at the headphone outputs and line outputs are out-of-phase with respect to each other. 72 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 LOL LOR Figure 5-38. Stereo Single-Ended Line-out LOL Output + RIGHT_DACP LEFT DAC AFIR LOR Output - RIGHT_DACM Figure 5-39. Low Power Mono DAC to Differential Line-out 5.13 DAC GAIN SETTING 5.13.1 PowerTune Modes As part of the PowerTune strategy, the analog properties of the DAC are adjusted. As a consequence, the full-scale signal swing achieved at the headphone and line outputs must be adjusted. Please see Table 5-20 for the proper gain compensation values across the different combinations. Table 5-20. DAC Gain vs. PowerTune Modes DAC PowerTune Mode Control PowerTune Mode Page 1,Register 3/4, D(4:2) Headphone/Line-out Gain CM = 0.75V, Gain for 375mVRMS output swing at 0dB full scale input CM = 0.9V, Gain for 500mVRMS output swing at 0dB full scale input 0 000 PTM_P3, PTM_P4 -2 001 PTM_P2 2 4 010 PTM_P1 12 14 5.13.2 Digital Volume Control The TLV320AIC3204 signal processing blocks incorporate a digital volume control block that can control the volume of the playback signal from +24dB to -63.5dB in steps of 0.5dB. These can be controlled by writing to Page 0, Register 65 and 66. The volume control of left and right channels by default can be controlled independently, however by programming Page 0, Reg 64, D(1:0), they can be made interdependent. The volume changes are soft-stepped in steps of 0.5dB to avoid audible artifacts during Submit Documentation Feedback Application Information 73 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com gain change. The rate of soft-stepping can be controlled by programming Page 0, Reg 63, D(1:0) to either one step per frame ( DAC_FS ) or one step per 2 frames. The soft-stepping feature can also be entirely disabled. During soft-stepping the value of the actual applied gain would differ from the programmed gain in register. The TLV320AIC3204 gives a feedback to the user in form of register readable flag to indicate that soft-stepping is currently in progress. The flags for left and right channels can be read back by reading Page 0, Reg 38, D(4) and D(0) respectively. A value of 0 in these flags indicates a soft-stepping operation in progress, and a value of 1 indicates that soft-stepping has completed. A soft-stepping operation comes into effect during a) power-up, when the volume control soft-steps from -63.5dB to programmed gain value b) volume change by user when DAC is powered up and c) power-down, when the volume control block soft-steps to -63.5dB before powering down the channel. 5.13.3 Dynamic Range Compression Typical music signals are characterized by crest factors, the ratio of peak signal power to average signal power, of 12dB or more. In order to avoid audible distortions due to clipping of peak signals, the gain of the DAC channel must be adjusted so as not to cause hard clipping of peak signals. As a result, during nominal periods, the applied gain is low, causing the perception that the signal is not loud enough. To overcome this problem, the DRC in the TLV320AIC3204 continuously monitors the output of the DAC Digital Volume control to detect its power level w.r.t. 0dB FS. When the power level is low, it increases the input signal gain to make it sound louder. At the same time, if a peaking signal is detected, it autonomously reduces the applied gain to avoid hard clipping. This results in sounds more pleasing to the ear as well as sounding louder during nominal periods. The DRC functionality in the TLV320AIC3204 is implemented by a combination of Processing Blocks in the DAC channel as described in Section 5.11.2. The DRC can be disabled by writing into Page 0, Reg 68, D(6:5). The DRC typically works on the filtered version of the input signal. The input signals have no audio information at DC and extremely low frequencies; however they can significantly influence the energy estimation function in DRC. Also most of the information about signal energy is concentrated in the low frequency region of the input signal. In order to estimate the energy of the input signal, the signal is first fed to the DRC high-pass filter and then to the DRC low-pass filter. These filters are implemented as first-order IIR filters given by N0 + N1z -1 HHPF ( z ) = 23 2 - D1z -1 (5-11) HLPF ( z ) = N0 + N1z -1 2 23 - D1z -1 (5-12) The coefficients for these filters are 24-bits wide in two's-complement and are user programmable through register write as given in Table 5-21 Table 5-21. DRC HPF and LPF Coefficients Coefficient Location HPF N0 C71 Page 46, Register 52 to 55 HPF N1 C72 Page 46, Register 56 to 59 HPF D1 C73 Page 46, Register 60 to 63 LPF N0 C74 Page 46, Register 64 to 67 LPF N1 C75 Page 46, Register 68 to 71 LPF D1 C76 Page 46, Register 72 to 75 74 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 The default values of these coefficients implement a high-pass filter with a cut-off at 0.00166*DAC_FS, and a low-pass filter with a cutoff at 0.00033 * DAC_FS. The output of the DRC high-pass filter is fed to the Processing Block selected for the DAC Channel. The absolute value of the DRC-LPF filter is used for energy estimation within the DRC. The gain in the DAC Digital Volume Control is controlled by Page 0, Register 65 and 66. When the DRC is enabled, the applied gain is a function of the Digital Volume Control register setting and the output of the DRC. The DRC parameters are described in sections that follow. 5.13.3.1 DRC Threshold The DRC Threshold represents the level of the DAC playback signal at which the gain compression becomes active. The output of the digital volume control in the DAC is compared with the set threshold. The threshold value is programmable by writing to register Page 0, Register 68, D(4:2). The Threshold value can be adjusted between -3dBFS to -24dBFS in steps of 3dB. Keeping the DRC Threshold value too high may not leave enough time for the DRC block to detect peaking signals, and can cause excessive distortion at the outputs. Keeping the DRC Threshold value too low can limit the perceived loudness of the output signal. The recommended DRC-Threshold value is -24 dB. When the output signal exceeds the set DRC Threshold, the interrupt flag bits at Page 0, Register 44, D(3:2) are updated. These flag bits are 'sticky' in nature, and are reset only after they are read back by the user. The non-sticky versions of the interrupt flags are also available at Page 0, Register 46, D(3:2). 5.13.3.2 DRC Hysteresis DRC Hysteresis is programmable by writing to Page 0, Register 68, D(1:0). It can be programmed to values between 0dB and 3dB in steps of 1dB. It is a programmable window around the programmed DRC Threshold that must be exceeded for a disabled DRC to become enabled, or an enabled DRC to become disabled. For example, if the DRC Threshold is set to -12dBFS and DRC Hysteresis is set to 3dB, then if the gain compressions in the DRC is inactive, the output of the DAC Digital Volume Control must exceed -9dBFS before gain compression due to the DRC is activated. Similarly, when the gain compression in the DRC is active, the output of the DAC Digital Volume Control needs to fall below -15dBFS for gain compression in the DRC to be deactivated. The DRC Hysteresis feature prevents the rapid activation and de-activation of gain compression in the DRC in cases when the output of DAC Digital Volume Control rapidly fluctuates in a narrow region around the programmed DRC Threshold. By programming the DRC Hysteresis as 0dB, the hysteresis action is disabled. Recommended Value of DRC Hysteresis is 3 dB. 5.13.3.3 DRC Hold The DRC Hold is intended to slow the start of decay for a specified period of time in response to a decrease in energy level. To minimize audible artifacts, it is recommended to set the DRC Hold time to 0 through programming Page 0, Register 69, D(6:3) = 0000. 5.13.3.4 DRC Attack Rate When the output of the DAC Digital Volume Control exceeds the programmed DRC Threshold, the gain applied in the DAC Digital Volume Control is progressively reduced to avoid the signal from saturating the channel. This process of reducing the applied gain is called Attack. To avoid audible artifacts, the gain is reduced slowly with a rate equaling the Attack Rate programmable via Page 0, Register 70, D(7:4). Attack Rates can be programmed from 4dB gain change per 1/DAC_FS to 1.2207e-5dB gain change per 1/DAC_FS. Attack Rates should be programmed such that before the output of the DAC Digital Volume control can clip, the input signal should be sufficiently attenuated. High Attack Rates can cause audible artifacts, and too-slow Attack Rates may not be able to prevent the input signal from clipping. Submit Documentation Feedback Application Information 75 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com The recommended DRC Attack Rate value is 1.9531e-4 dB per 1/DAC_FS. 5.13.3.5 DRC Decay Rate When the DRC detects a reduction in output signal swing beyond the programmed DRC Threshold, the DRC enters a Decay state, where the applied gain in Digital Volume Control is gradually increased to programmed values. To avoid audible artifacts, the gain is slowly increased with a rate equal to the Decay Rate programmed through Page 0, Register 70, D(3:0). The Decay Rates can be programmed from 1.5625e-3dB per 1/DAC_FS to 4.7683e-7dB per 1/DAC_FS. If the Decay Rates are programmed too high, then sudden gain changes can cause audible artifacts. However, if it is programmed too slow, then the output may be perceived as too low for a long time after the peak signal has passed. The recommended Value of DRC Attack Rate is 2.4414e-5 dB per 1/DAC_FS. 5.13.3.6 Example Setup for DRC * * * * * * PGA Gain = 12 dB Threshold = -24 dB Hysteresis = 3 dB Hold time = 0 ms Attack Rate = 1.9531e-4 dB per 1/DAC_FS Decay Rate = 2.4414e-5 dB per 1/DAC_FS Script #Go to Page 0 w 30 00 00 #DAC => 12 db gain left w 30 41 18 #DAC => 12 db gain right w 30 42 18 #DAC => DRC Enabled for both channels, Threshold = -24 db, Hysteresis = 3 dB w 30 44 7F #DRC Hold = 0 ms, Rate of Changes of Gain = 0.5 dB/Fs' w 30 45 00 #Attack Rate = 1.9531e-4 dB/Frame , DRC Decay Rate =2.4414e-5 dB/Frame w 30 46 B6 #Go to Page 46 w 30 00 2E #DRC HPF w 30 34 7F AB 00 00 80 55 00 00 7F 56 00 00 #DRC LPF W 30 40 00 11 00 00 00 11 00 00 7F DE 00 00 5.14 DAC Special Functions 5.14.1 Beep Generation A special function has also been included in the processing block PRB_P25 for generating a digital sine-wave signal that is sent to the DAC. This is intended for generating key-click sounds for user feedback. A default value for the sine-wave frequency, sine burst length, and signal magnitude is kept in the Tone Generator Registers Page 0/Registers 71 through 79. The sine wave generator is very flexible, and is completely register programmable via 9 registers of 8 bits each to provide many different sounds. Two registers are used for programming the 16-bit, two's-complement, sine-wave coefficient (Page 0, Registers 76 and 77). Two other registers program the 16-bit, two's-complement, cosine-wave coefficient (Page 0, Registers 78 and 79). This coefficient resolution allows virtually any frequency of sine wave in the audio band to be generated up to DAC_FS/2. Three registers are used to control the length of the sine burst waveform which are located on Page 0, Registers 73, 74, and 75. The resolution (bit) in the registers of the sine burst length is one sample time, so this allows great control on the overall time of the sine burst waveform. This 24-bit length timer supports 16,777,215 sample times. (For example if DAC_FS is set at 48kHz, and the registers combined value equals 96000d (01770h), then the sine burst would last exactly two seconds.) 76 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Two registers are used to independently control the Left sine-wave volume and the Right sine-wave volume. The 6-bit digital volume control allows level control of 0dB to -63dB in one dB steps. The left-channel volume is controlled by writing to Page 0, Register 71, D(5:0). The right-channel volume is controlled by Page 0, Register 72, D(5:0). A master volume control for the left and right channel of the beep generator can be set up using Page 0, Register 72, D(7:6). The default volume control setting is 0dB, the tone generator maximum-output level. For playing back the sine wave, the DAC must be configured with regards to clock setup and routing. The sine wave gets started by setting the Beep Generator Enable Bit (Page 1, Reg 71, D(7)=1)). After the sine wave has played for its predefined time period this bit will automatically set back to 0. While the sine wave is playing, the parameters of the beep generator cannot be changed. To stop the sine wave while it is playing set the Beep Generator Enable Bit to 0. 5.14.2 DIGITAL AUTO MUTE The TLV320AIC3204 also incorporates a special feature, in which the DAC channel is auto-muted when a continuous stream of DC-input is detected. By default, this feature is disabled. It can be enabled by writing a non-000 value into Page 0, Register 64, D(6:4). The non-zero value controls the duration of continuous stream of DC-input before which the auto-mute feature takes effect. This feature is especially helpful for eliminating high-frequency-noise power being delivered into the load even during silent periods of speech or music. 5.14.3 Adaptive Filtering When the DAC is running, the user-programmable filter coefficients are locked and cannot be accessed for either read or write. However the TLV320AIC3204 offers an adaptive filter mode as well. Setting Register Page 44,Reg 1, D(2)=1 will turn on double buffering of the coefficients. In this mode, filter coefficients can be updated through the host, and activated without stopping and restarting the DAC. This enables advanced adaptive filtering applications. In the double-buffering scheme, all coefficients are stored in two buffers (Buffers A and B). When the DAC is running and adaptive filtering mode is turned on, setting the control bit Page 44, Reg 1, D(0)=1 switches the coefficient buffers at the next start of a sampling period. This bit is set back to 0 after the switch occurs. At the same time, the flag Page 44, Reg 1, D(1) toggles. The flag in Page 44, Reg 1, D(1) indicates which of the two buffers is actually in use. Page 44, Reg 1, D(1)=0: Buffer A is in use by the DAC engine, D(1)=1: Buffer B is in use. While the device is running, coefficient updates are always made to the buffer not in use by the DAC, regardless to which buffer the coefficients have been written. DAC running Page 44, Reg 1, D(1) Coefficient Buffer in use Writing to Will update No 0 None C1, Buffer A C1, Buffer A No 0 None C1, Buffer B C1, Buffer B Yes 0 Buffer A C1, Buffer A C1, Buffer B Yes 0 Buffer A C1, Buffer B C1, Buffer B Yes 1 Buffer B C1, Buffer A C1, Buffer A Yes 1 Buffer B C1, Buffer B C1, Buffer A The user programmable coefficients C1 to C70 are defined on Pages 44, 45 and 46 for Buffer A and Pages 62, 63 and 64 for Buffer B. Submit Documentation Feedback Application Information 77 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 5.15 DAC Setup The following paragraphs are intended to guide a user through the steps necessary to configure the TLV320AIC3204 DAC. Step 1 The system clock source (master clock) and the targeted DAC sampling frequency must be identified. Depending on the targeted performance the decimation filter type (A, B or C) and DOSR value can be determined. Filter A should be used for 48kHz high-performance operation, DOSR must be a multiple of 8. Filter B should be used for up to 96kHz operations, DOSR must be a multiple of 4. Filter C should be used for up to 192kHz operations, DOSR must be a multiple of 2. In all cases the DOSR is limited in its range by the following condition: 2.8MHz < DOSR * DAC_FS < 6.2MHz Based on the identified filter type and the required signal processing capabilities, the appropriate processing block can be determined from the list of available processing blocks (PRB_P1 to PRB_P25). Based on the available master clock, the chosen DOSR and the targeted sampling rate, the clock divider values NDAC and MDC can be determined. If necessary, the internal PLL can add a large degree of flexibility. In summary, Codec_Clkin (derived directly from the system clock source or from the internal PLL) divided by MDAC, NDAC and DOSR must be equal to the DAC sampling rate DAC_FS. The Clodec_Clkin clock signal is shared with the ADC clock generation block. CODEC_CLKIN = NADC*MADC*DOSR*DAC_FS To a large degree, NDAC and MDAC can be chosen independently in the range of 1 to 128. In general, NDAC should be as large as possible as long as the following condition can still be met: MADC*DOSR/32 RC RC is a function of the chosen processing block and is listed in Table 5-13. The common-mode voltage setting of the device is determined by the available analog power supply and the desired PowerTune mode. This common-mode (input common-mode) value is common across the ADC, DAC and analog bypass path. The output common-mode setting is determined by the available analog power supplies (AVdd and LDOin) and the desired output-signal swing. At this point the following device specific parameters are known: PRB_Rx, DOSR, NADC, MADC, input and output common-mode values If the PLL is used, the PLL parameters P, J, D and R are determined as well. Step 2 Setting up the device via register programming: The following list gives a sequence of items that must be executed in the time between powering the device up and reading data from the device: Define starting point: 78 Application Information Set register page to 0 Initiate SW Reset Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Program Clock Settings Program PLL clock dividers P,J,D,R (if PLL is necessary) Power up PLL (if PLL is necessary) Program and power up NADC Program and power up MADC Program OSR value Program I2S word length if required (e.g. 20bit) Program the processing block to be used At this point, at the latest, analog power supply must be applied to the device ( via internal LDO or external) Program Analog Blocks Set register Page to 1 Disable coarse AVdd generation Enable Master Analog Power Control Program Common Mode voltage Program PowerTune (PTM) mode Program Reference fast charging Program Headphone specific depop settings (in case of headphone driver used) Program routing of DAC output to the output amplifier (headphone or line out) Unmute and set gain of output driver Power up output driver Apply waiting time determined by the de-pop settings and the soft-stepping settings of the driver gain or poll Page 1, Reg 63 Power Up DAC Set register Page to 0 Power up DAC Channels Unmute digital volume control A detailed example can be found in Section 5.22. 5.16 CLOCK GENERATION AND PLL The TLV320AIC3204 supports a wide range of options for generating clocks for the ADC and DAC sections as well as interface and other control blocks as shown in Figure 5-40. The clocks for ADC and DA require a source reference clock. This clock can be provided on variety of device pins such as MCLK, BCLK or GPI pins. The source reference clock for the codec can be chosen by programming the CODEC_CLKIN value on Page 0, Register 4, D(1:0). The CODEC_CLKIN can then be routed through highly-flexible clock dividers shown in Figure 5-40 to generate the various clocks required for the ADC and DAC sections. In the event that the desired audio clocks cannot be generated from the reference clocks on MCLK, BCLK or GPIO, the TLV320AIC3204 also provides the option of using the on-chip PLL which supports a wide range of fractional multiplication values to generate the required clocks. Starting from CODEC_CLKIN the TLV320AIC3204 provides several programmable clock dividers to help achieve a variety of sampling rates for ADC, DAC and clocks for the processing block. Submit Documentation Feedback Application Information 79 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com BCLK MCLK DIN/MFP1 GPIO PLL_CLKIN PLL x(RxJ*D)/P BCLK MCLK GPIO PLL_CLK CODEC_CLKIN /NDAC NDAC = 1,2,....,127,128 /NADC ADC_CLK DAC_CLK /MDAC MDAC = 1,2,...,127,128 /MADC DAC_MOD_CLK /DOSR NADC = 1,2,....,127,128 DOSR = 1,2,...,1023,1024 DAC_FS MADC = 1,2,...,127,128 ADC_MOD_CLK /AOSR AOSR = 1,2,...,255,256 ADC_FS Figure 5-40. Clock Distribution Tree CODEC _ CLKIN NADC MADC AOSR CODEC _ CLKIN ADC _ MOD _ CLK = NADC MADC CODEC _ CLKIN DAC _ FS = NDAC MDAC DOSR CODEC _ CLKIN DAC _ MOD _ CLK = NDAC MDAC ADC _ FS = (5-13) (5-14) (5-15) (5-16) Table 5-22. CODEC CLKIN Clock Dividers 80 Divider Bits NDAC Page 0, Register 11, D(6:0) MDAC Page 0, Register 12, D(6:0) DOSR Page 0, Register 13, D(1:0) + Page 0, Register 14, D(7:0) Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Table 5-22. CODEC CLKIN Clock Dividers (continued) Divider Bits NADC Page 0, Register 18, D(6:0) MADC Page 0, Register 19, D(6:0) AOSR Page 0, Register 20, D(7:0) The DAC Modulator is clocked by DAC_MOD_CLK. For proper power-up operating of the DAC Channel, these clocks must be enabled by configuring the NDAC and MDAC clock dividers ( Page 0,Register 11, D(7) =1 and Page 0, Register 12, D(7)=1). When the DAC channel is powered down, the device internally initiates a power-down sequence for proper shut-down. During this shut-down sequence, the NDAC and MDAC dividers must not be powered down, or else a proper low power shut-down may not take place. The user can read back the power-status flag Page 0, Register 37, D(7) and Page 0, Register 37, D(3). When both the flags indicate power-down, the MDAC divider may be powered down, followed by the NDAC divider. The ADC modulator is clocked by ADC_MOD_CLK. For proper power-up of the ADC Channel, these clocks are enabled by the NADC and MADC clock dividers (Page 0,Register 18, D(7) =1 and Page 0, Register 19, D(7)=1). When the ADC channel is powered down, the device internally initiates a power-down sequence for proper shut-down. During this shut-down sequence, the NADC and MADC dividers must not be powered down, or else a proper low power shut-down may not take place. The user can read back the power-status flag Page 0, Register 36, D(6) and Page 0, Register 36, D(2). When both the flags indicate power-down, the MADC divider may be powered down, followed by NADC divider. When ADC_CLK is derived from the NDAC divider output, the NDAC must be kept powered up till the power-down status flags for ADC do not indicate power-down. When the input to the AOSR clock divider is derived from DAC_MOD_CLK, then MDAC must be powered up when ADC_FS is needed ( i.e. when WCLK is generated by TLV320AIC3204 or AGC is enabled) and can be powered down only after the ADC power-down flags indicate power-down status. In general, all the root clock dividers should be powered down only after the child clock dividers have been powered down for proper operation. The TLV320AIC3204 also has options for routing some of the internal clocks to the output pins of the device to be used as general purpose clocks in the system. The feature is shown in Figure 5-41. DAC_MOD_CLK DAC_CLK ADC_MOD_CLK ADC_CLK BDIV_CLKIN /N N = 1,2,...,127,128 BCLK Figure 5-41. BCLK Output Options Submit Documentation Feedback Application Information 81 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com In the mode when TLV320AIC3204 is configured to drive the BCLK pin (Page 0, Register 27, D3='1') it can be driven as divided value of BDIV_CLKIN. The division value can be programmed in Page 0, Register 30, D(6:0) from 1 to 128. The BDIV_CLKIN can itself be configured to be one of DAC_CLK, DAC_MOD_CLK, ADC_CLK or ADC_MOD_CLK by configuring the BDIV_CLKIN mux in Page 0, Register 29, D(1:0). Additionally a general purpose clock can be driven out on either GPIO, DOUT or MISO pin. This clock can be a divided down version of CDIV_CLKIN. The value of this clock divider can be programmed from 1 to 128 by writing to Page 0, Register 26, D(6:0). The CDIV_CLKIN can itself be programmed as one of the clocks among the list shown in Figure 5-42. This can be controlled by programming the mux in Page 0, Register 25, D(2:0). PLL_CLK MCLK BCLK DIN DAC_MOD_CLK DAC_CLK ADC_MOD_CLK ADC_CLK CDIV_CLKIN /M M = 1,2,...,127,128 CLKOUT GPIO MISO DOUT Figure 5-42. General Purpose Clock Output Options 82 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Table 5-23. Maximum TLV320AIC3204 Clock Frequencies DVdd 1.26V DVdd 1.65V CODEC_CLKIN 50MHz 137MHz when NDAC is even, NADC is even 112MHz when NDAC is even, NADC is odd 110MHz when NDAC is odd, NADC is even 110MHz when NDAC is odd, NADC is odd ADC_CLK 25MHz 55.296MHz ADC_MOD_CLK 6.758MHz 6.758MHz ADC_FS 0.192MHz 0.192MHz DAC_CLK 25MHz 55.296MHz DAC_MOD_CLK 6.758MHz 4.2MHz when Class-D Mode Headphone is used 6.758MHz DAC_FS 0.192MHz 0.192MHz BDIV_CLKIN 25MHz 55.296MHz CDIV_CLKIN 50MHz 112MHz when M is odd 137MHz when M is even 5.16.1 PLL The TLV320AIC3204 has an on chip PLL with fractional multiplication to generate the clock frequency needed by the audio ADC, DAC, and Digital Signal Processing blocks. The programmability of the PLL allows operation from a wide variety of clocks that may be available in the system. The PLL input supports clocks varying from 512kHz to 20MHz and is register programmable to enable generation of required sampling rates with fine precision. The PLL can be turned on by writing to Page 0, Register 5, D(7). When the PLL is enabled, the PLL output clock PLL_CLK is given by the following equation: PLL _ CLKIN R J.D PLL _ CLK = P (5-17) R = 1, 2, 3,4 J = 4,5,6,... 63, and D = 0, 1, 2... 9999 P = 1, 2, 3... 8 R, J, D, and P are register programmable. The PLL can be programmed via Page 0, Registers 5 thru 8. The PLL can be turned on via Page 0, Register 5, D(7). The variable P can be programmed via Page 0, Register 5, D(6:4). The default register value for P is 2. The variable R can be programmed via Page 0, Register 5, D(3:0). The default register value for R is 1. The variable J can be programmed via Page 0, Register 6, D(5:0). The variable D is 12-bits and is programmed into two registers. The MSB portion can be programmed via Page 0, Register 7, D(5:0), and the LSB portion is programmed via Page 0, Register 8, D(5:0). The default register value for D is 0. When the PLL is enabled the following conditions must be satisfied * When the PLL is enabled and D = 0, the following conditions must be satisfied for PLL_CLKIN: PLL _ CLKIN 512kHz 20MHz P * When the PLL is enabled and D 0, the following conditions must be satisfied for PLL_CLKIN: PLL _ CLKIN 10MHz 20MHz P (5-18) (5-19) In TLV320AIC3204 the PLL_CLK supports a wide range of output clock, based on register settings and power-supply conditions. Submit Documentation Feedback Application Information 83 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Table 5-24. PLL_CLK Frequency Range AVdd PLL Mode Page 0, Reg 4, D6 Min PLL_CLK frequency (MHz) Max PLL_CLK frequency (MHz) 1.5V 0 80 103 1 95 110 0 80 118 1 92 123 0 80 132 1 92 137 1.65V 1.80V The PLL can be powered up independent of the ADC and DAC blocks, and can also be used as a general purpose PLL by routing its output to the GPIO output. After powering up the PLL, PLL_CLK is available typically after 10ms. The PLL output frequency is controlled by J.D and R dividers PLL Divider Bits J Page 0, Register 6, D(5:0) D Page 0, Register 7, D(5:0) && Page 0, Register 8, D(7:0) R Page 0, Register 5, D(3:0) The D-divider value is 14-bits wide and is controlled by 2 registers. For proper update of the D-divider value, Page 0, Register 7 must be programmed first followed immediately by Page 0, Register 8. Unless the write to Page 0, Register 8 is completed, the new value of D will not take effect. The clocks for codec and various signal processing blocks, CODEC_CLKIN can be generated from MCLK input, BCLK input, GPIO input or PLL_CLK (Page 0/Register 4/D(1:0) ). If the CODEC_CLKIN is derived from the PLL, then the PLL must be powered up first and powered down last. Table 5-25 lists several example cases of typical MCLK rates and how to program the PLL to achieve a sample rate Fs of either 44.1kHz or 48kHz. Table 5-25. PLL Example Configurations Fs = 44.1kHz MCLK (MHz) PLLP PLLR PLLJ PLLD MADC NADC AOSR MDAC NDAC DOSR 2.8224 1 3 10 0 3 5 128 3 5 128 5.6448 1 3 5 0 3 5 128 3 5 128 12 1 1 7 560 3 5 128 3 5 128 13 1 2 4 2336 13 3 64 4 6 104 16 1 1 5 2920 3 5 128 3 5 128 19.2 1 1 4 4100 3 5 128 3 5 128 48 4 1 7 560 3 5 128 3 5 128 2.048 1 3 14 0 2 7 128 7 2 128 3.072 1 4 7 0 2 7 128 7 2 128 4.096 1 3 7 0 2 7 128 7 2 128 6.144 1 2 7 0 2 7 128 7 2 128 8.192 1 4 3 0 2 8 128 4 4 128 12 1 1 7 1680 2 7 128 7 2 128 16 1 1 5 3760 2 7 128 7 2 128 19.2 1 1 4 4800 2 7 128 7 2 128 48 4 1 7 1680 2 7 128 7 2 128 Fs = 48kHz 84 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.17 INTERFACE 5.17.1 AUDIO DIGITAL I/O INTERFACE Audio data is transferred between the host processor and the TLV320AIC3204 via the digital audio data serial interface, or audio bus. The audio bus on this device is very flexible, including left or right-justified data options, support for I2S or PCM protocols, programmable data length options, a TDM mode for multichannel operation, very flexible master/slave configurability for each bus clock line, and the ability to communicate with multiple devices within a system directly. The audio bus of the TLV320AIC3204 can be configured for left or right-justified, I2S, DSP, or TDM modes of operation, where communication with standard telephony PCM interfaces is supported within the TDM mode. These modes are all MSB-first, with data width programmable as 16, 20, 24, or 32 bits by configuring Page 0, Register 27, D(5:4). In addition, the word clock and bit clock can be independently configured in either Master or Slave mode, for flexible connectivity to a wide variety of processors. The word clock is used to define the beginning of a frame, and may be programmed as either a pulse or a square-wave signal. The frequency of this clock corresponds to the maximum of the selected ADC and DAC sampling frequencies. The bit clock is used to clock in and clock out the digital audio data across the serial bus. When in Master mode, this signal can be programmed to generate variable clock pulses by controlling the bit-clock divider in Page 0, Register 30 (see Figure 5-40). The number of bit-clock pulses in a frame may need adjustment to accommodate various word-lengths as well as to support the case when multiple TLV320AIC3204s may share the same audio bus. The TLV320AIC3204 also includes a feature to offset the position of start of data transfer with respect to the word-clock. This offset can be controlled in terms of number of bit-clocks and can be programmed in Page 0, Register 28. The TLV320AIC3204 also has the feature of inverting the polarity of the bit-clock used for transferring the audio data as compared to the default clock polarity used. This feature can be used independently of the mode of audio interface chosen. This can be configured via Page 0, Register 29, D(3). The TLV320AIC3204 further includes programmability (Page 0, Register 27, D0) to 3-state the DOUT line during all bit clocks when valid data is not being sent. By combining this capability with the ability to program at what bit clock in a frame the audio data begins, time-division multiplexing (TDM) can be accomplished, enabling the use of multiple codecs on a single audio serial data bus. When the audio serial data bus is powered down while configured in master mode, the pins associated with the interface are put into a 3-state output condition. By default when the word-clocks and bit-clocks are generated by the TLV320AIC3204, these clocks are active only when the codec (ADC, DAC or both) are powered up within the device. This is done to save power. However, it also supports a feature when both the word clocks and bit-clocks can be active even when the codec in the device is powered down. This is useful when using the TDM mode with multiple codecs on the same bus, or when word-clock or bit-clocks are used in the system as general-purpose clocks. 5.17.1.1 Right Justified Mode The Audio Interface of the TLV320AIC3204 can be put into Right Justified Mode by programming Page 0, Register 27, D(7:6) = 10. In right-justified mode, the LSB of the left channel is valid on the rising edge of the bit clock preceding the falling edge of the word clock. Similarly, the LSB of the right channel is valid on the rising edge of the bit clock preceding the rising edge of the word clock. Submit Documentation Feedback Application Information 85 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com 1/fs WCLK BCLK Left Channel DIN/ DOUT 0 n-1 n-2 n-3 Right Channel 2 MSB 1 0 n-1 n-2 n-3 LSB 2 1 MSB 0 LSB Figure 5-43. Timing Diagram for Right-Justified Mode For Right-Justified mode, the number of bit-clocks per frame should be greater than twice the programmed word-length of the data. 5.17.1.2 Left Justified Mode The Audio Interface of the TLV320AIC3204 can be put into Left Justified Mode by programming Page 0, Register 27, D(7:6) = 11. In left-justified mode, the MSB of the right channel is valid on the rising edge of the bit clock following the falling edge of the word clock. Similarly the MSB of the left channel is valid on the rising edge of the bit clock following the rising edge of the word clock. WORD CLOCK LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 2 1 N N N - - 1 2 3 0 LD(n) 3 2 1 N N N - - 1 2 3 0 RD(n) LD(n) = n'th sample of left channel data LD(n+1) RD(n) = n'th sample of right channel data Figure 5-44. Timing Diagram for Left-Justified Mode WORD CLOCK LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 2 1 0 LD(n) LD(n) = n'th sample of left channel data N N N - - 1 2 3 3 2 1 N N N - - 1 2 3 0 RD(n) LD(n+1) RD(n) = n'th sample of right channel data Figure 5-45. Timing Diagram for Left-Justified Mode with Offset=1 86 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 WORD CLOCK LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 2 1 N N N - - 1 2 3 0 LD(n) 3 2 1 N N N - - 1 2 3 0 RD(n) LD(n) = n'th sample of left channel data 3 LD(n+1) RD(n) = n'th sample of right channel data Figure 5-46. Timing Diagram for Left-Justified Mode with Offset=0 and inverted bit clock For Left-Justified mode, the number of bit-clocks per frame should be greater than twice the programmed word-length of the data. Also, the programmed offset value should be less than the number of bit-clocks per frame by at least the programmed word-length of the data. 5.17.1.3 I2S Mode The Audio Interface of the TLV320AIC3204 can be put into Right Justified Mode by programming Page 0, Register 27, D(7:6) = to 00. In I2S mode, the MSB of the left channel is valid on the second rising edge of the bit clock after the falling edge of the word clock. Similarly the MSB of the right channel is valid on the second rising edge of the bit clock after the rising edge of the word clock. WORD CLOCK LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 2 1 N N N - - 1 2 3 0 LD(n) 3 2 1 N N N - - 1 2 3 0 RD(n) LD(n) = n'th sample of left channel data 3 LD(n+1) RD(n) = n'th sample of right channel data Figure 5-47. Timing Diagram for I2S Mode WORD CLOCK LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N 1 5 4 3 2 1 0 LD(n) LD(n) = n'th sample of left channel data N 1 5 4 3 2 1 N 1 0 RD(n) 5 LD (n+1) RD(n) = n'th sample of right channel data Figure 5-48. Timing Diagram for I2S Mode with offset=2 Submit Documentation Feedback Application Information 87 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 WORD CLOCK www.ti.com LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 2 1 N N N - - 1 2 3 0 LD(n) 3 2 1 N N N - - 1 2 3 0 RD(n) LD(n) = n'th sample of left channel data 3 LD(n+1) RD(n) = n'th sample of right channel data Figure 5-49. Timing Diagram for I2S Mode with offset=0 and bit clock invert For I2S mode, the number of bit-clocks per channel should be greater than or equal to the programmed word-length of the data. Also the programmed offset value should be less than the number of bit-clocks per frame by at least the programmed word-length of the data. 5.17.1.4 DSP Mode The Audio Interface of the TLV320AIC3204 can be put into Right Justified Mode by programming Page 0, Register 27, D(7:6) = 01. In DSP mode, the falling edge of the word clock starts the data transfer with the left channel data first and immediately followed by the right channel data. Each data bit is valid on the falling edge of the bit clock. WORD CLOCK LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 2 1 0 N N N - - 1 2 3 LD(n) 3 2 1 N N N - - 1 2 3 0 RD(n) LD(n) = n'th sample of left channel data 3 LD (n+1) RD(n) = n'th sample of right channel data Figure 5-50. Timing Diagram for DSP Mode WORD CLOCK LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 2 1 0 LD(n) LD(n) = n'th sample of left channel data N N N - - 1 2 3 3 2 1 N N N - - 1 2 3 0 RD(n) LD(n+1) RD(n) = n'th sample of right channel data Figure 5-51. Timing Diagram for DSP Mode with offset = 1 88 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com WORD CLOCK SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 LEFT CHANNEL RIGHT CHANNEL BIT CLOCK DATA N N N - - 1 2 3 3 LD(n) 2 1 0 N N N - - 1 2 3 3 2 1 0 N N N - - 1 2 3 RD(n) 3 LD(n+1) Figure 5-52. Timing Diagram for DSP Mode with offset = 1 and bit clock inverted For DSP mode, the number of bit-clocks per frame should be greater than twice the programmed word-length of the data. Also the programmed offset value should be less than the number of bit-clocks per frame by at least the programmed word-length of the data. 5.17.1.5 Secondary I2S The audio serial interface on the TLV320AIC3204 has an extensive IO control to allow communication with two independent processors for audio data. Each processor can communicate with the device one at a time. This feature is enabled by register programming of the various pin selections. Submit Documentation Feedback Application Information 89 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com BCLK BCLK BCLK BCLK_INT S_BCLK S_BCLK BCLK_OUT WCLK WCLK WCLK DAC_WCLK_INT S_WCLK DAC_FS S_WCLK ADC_FS DIN DOUT WCLK ADC_WCLK_INT DOUT_int DOUT DIN Audio Digital Serial Interface ADC_WCLK S_DIN Primary Audio Processor DIN DIN_INT GPIO SCLK S_DIN ADC_WCLK ADC_FS MISO GPIO SCLK BCLK BCLK2 S_BCLK BCLK_OUT DOUT Secondary Audio Processor BCLK_OUT GPIO DAC_FS SCLK WCLK BCLK MISO S_WCLK WCLK2 Clock Generation WCLK MISO DAC_FS DOUT ADC_FS ADC_FS GPIO S_DIN DOUT SCLK DOUT_int MISO DIN (S_DOUT) DIN Figure 5-53. Audio Serial Interface Multiplexing The secondary audio interface uses multifunction pins. For an overview on multifunction pins please see Section 5.2.5. Figure 5-53 illustrates possible audio interface routing. The multifunction pins SCLK and MISO are only available in I2C communication mode. This multiplexing capability allows the TLV320AIC3204 to communicate with two separate devices with independent I2S/PCM busses, one at a time. 5.17.2 CONTROL INTERFACE The TLV320AIC3204 control interface supports SPI or I2C communication protocols, with the protocol selectable using the SPI_SELECT pin. For SPI, SPI_SELECT should be tied high; for I2C, SPI_SELECT should be tied low. It is not recommended to change the state of SPI_SELECT during device operation. 90 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.17.2.1 I2C CONTROL MODE The TLV320AIC3204 supports the I2C control protocol, and will respond to the I2C address of 0011000. I2C is a two-wire, open-drain interface supporting multiple devices and masters on a single bus. Devices on the I2C bus only drive the bus lines LOW by connecting them to ground; they never drive the bus lines HIGH. Instead, the bus wires are pulled HIGH by pullup resistors, so the bus wires are HIGH when no device is driving them LOW. This way, two devices cannot conflict; if two devices drive the bus simultaneously, there is no driver contention. Communication on the I2C bus always takes place between two devices, one acting as the master and the other acting as the slave. Both masters and slaves can read and write, but slaves can only do so under the direction of the master. Some I2C devices can act as masters or slaves, but the TLV320AIC3204 can only act as a slave device. An I2C bus consists of two lines, SDA and SCL. SDA carries data, and the SCL signal provides the clock. All data is transmitted across the I2C bus in groups of eight bits. To send a bit on the I2C bus, the SDA line is driven to the appropriate level while SCL is LOW (a LOW on SDA indicates the bit is zero, while a HIGH indicates the bit is one). Once the SDA line has settled, the SCL line is brought HIGH, then LOW. This pulse on the SCL line clocks the SDA bit into the receiver's shift register. The I2C bus is bidirectional: the SDA line is used both for transmitting and receiving data. When a master reads from a slave, the slave drives the data line; when a master sends to a slave, the master drives the data line. Most of the time the bus is idle, no communication is taking place, and both lines are HIGH. When communication is taking place, the bus is active. Only master devices can start communication on the bus. Normally, the data line is only allowed to change state while the clock line is LOW. If the data line changes state while the clock line is HIGH, it is either a START condition or its counterpart, a STOP condition. A START condition is when the clock line is HIGH and the data line goes from HIGH to LOW. A STOP condition is when the clock line is HIGH and the data line goes from LOW to HIGH. After the master issues a START condition, it sends a byte that selects the slave device for communication. This byte is called the address byte. Each device on an I2C bus has a unique 7-bit address to which it responds. (Slaves can also have 10-bit addresses; see the I2C specification for details.) The master sends an address in the address byte, together with a bit that indicates whether it wishes to read from or write to the slave device. Every byte transmitted on the I2C bus, whether it is address or data, is acknowledged with an acknowledge bit. When a master has finished sending a byte (eight data bits) to a slave, it stops driving SDA and waits for the slave to acknowledge the byte. The slave acknowledges the byte by pulling SDA LOW. The master then sends a clock pulse to clock the acknowledge bit. Similarly, when a master has finished reading a byte, it pulls SDA LOW to acknowledge this to the slave. It then sends a clock pulse to clock the bit. (Remember that the master always drives the clock line.) A not-acknowledge is performed by simply leaving SDA HIGH during an acknowledge cycle. If a device is not present on the bus, and the master attempts to address it, it will receive a not-acknowledge because no device is present at that address to pull the line LOW. When a master has finished communicating with a slave, it may issue a STOP condition. When a STOP condition is issued, the bus becomes idle again. A master may also issue another START condition. When a START condition is issued while the bus is active, it is called a repeated START condition. The TLV320AIC3204 can also respond to and acknowledge a General Call, which consists of the master issuing a command with a slave address byte of 00H. This feature is disabled by default, but can be enabled via Page 0, Register 34, Bit D(5). Submit Documentation Feedback Application Information 91 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com SCL DA(6) SDA Start (M) DA(0) 7-bit Device Address (M) RA(7) Write (M) Slave Ack (S) RA(0) 8-bit Register Address (M) D(7) Slave Ack (S) D(0) 8-bit Register Data (M) Slave Ack (S) Stop (M) (M) => SDA Controlled by Master (S) => SDA Controlled by Slave Figure 5-54. I2C Write SCL DA(6) SDA Start (M) DA(0) 7-bit Device Address (M) RA(7) Write (M) Slave Ack (S) DA(6) RA(0) 8-bit Register Address (M) Slave Ack (S) Repeat Start (M) DA(0) 7-bit Device Address (M) D(7) Read (M) Slave Ack (S) 8-bit Register Data (S) D(0) Master No Ack (M) Stop (M) (M) => SDA Controlled by Master (S) => SDA Controlled by Slave Figure 5-55. I2C Read In the case of an I2C register write, if the master does not issue a STOP condition, then the device enters auto-increment mode. So in the next eight clocks, the data on SDA is treated as data for the next incremental register. Similarly, in the case of an I2C register read, after the device has sent out the 8-bit data from the addressed register, if the master issues a ACKNOWLEDGE, the slave takes over control of SDA bus and transmit for the next 8 clocks the data of the next incremental register. 5.17.2.2 SPI DIGITAL INTERFACE In the SPI control mode, the TLV320AIC3204 uses the pins SCL/SSZ=SSZ, SCLK=SCLK, MISO=MISO, SDA/MOSI=MOSI as a standard SPI port with clock polarity setting of 0 (typical microprocessor SPI control bit CPOL = 0). The SPI port allows full-duplex, synchronous, serial communication between a host processor (the master) and peripheral devices (slaves). The SPI master (in this case, the host processor) generates the synchronizing clock (driven onto SCLK) and initiates transmissions. The SPI slave devices (such as the TLV320AIC3204) depend on a master to start and synchronize transmissions. A transmission begins when initiated by an SPI master. The byte from the SPI master begins shifting in on the slave MOSI pin under the control of the master serial clock (driven onto SCLK). As the byte shifts in on the MOSI pin, a byte shifts out on the MISO pin to the master shift register. The TLV320AIC3204 interface is designed so that with a clock-phase bit setting of 1 (typical microprocessor SPI control bit CPHA = 1), the master begins driving its MOSI pin and the slave begins driving its MISO pin on the first serial clock edge. The SSZ pin can remain low between transmissions; however, the TLV320AIC3204 only interprets the first 8 bits transmitted after the falling edge of SSZ as a command byte, and the next 8 bits as a data byte only if writing to a register. Reserved register bits should be written to their default values. The TLV320AIC3204 is entirely controlled by registers. Reading and writing these registers is accomplished by an 8-bit command sent to the MOSI pin of the part prior to the data for that register. The command is structured as shown in Section 5.17.2.3. The first 7 bits specify the register address which is being written or read, from 0 to 127 (decimal). The command word ends with an R/W bit, which specifies the direction of data flow on the serial bus. In the case of a register write, the R/W bit should be set to 0. A second byte of data is sent to the MOSI pin and contains the data to be written to the register. Reading of registers is accomplished in similar fashion. The 8-bit command word sends the 7-bit register address, followed by R/W bit = 1 to signify a register read is occurring. The 8-bit register data is then clocked out of the part on the MISO pin during the second 8 SCLK clocks in the frame. 92 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Table 5.17.2.3. COMMAND WORD Bit 7 ADDR(6) Bit 6 ADDR(5) Bit 5 ADDR(4) Bit 4 ADDR(3) Bit 3 ADDR(2) Bit 2 ADDR(1) Bit 1 ADDR(0) Bit 0 R/WZ SSZ SCLK MOSI A6 A5 A0 D7 D6 D1 D0 MISO Figure 5-56. SPI Timing Diagram for Register Write SSZ SCLK MOSI A6 MISO A5 A0 D7 D6 D1 D0 D7 D6 D1 D0 Figure 5-57. SPI Timing Diagram for Register Read 5.18 POWER The TLV320AIC3204 has four power-supply connections which allow various optimizations for low system power. The four supply pins are LDOin, DVdd, AVdd and IOVDD. * IOVdd - The IOVdd pin supplies the digital IO cells of the device. The voltage of IOVdd can range from 1.1 to 3.6V and is determined by the digital IO voltage of the rest of the system. * DVdd - This pin is either a supply input to the device, or if the internal LDO is used it is used to connect an external capacitor. It supplies the digital core of the device. Lower DVdd voltages cause lower power dissipation. If efficient switched-mode power supplies are used in the system, system power can be optimized using low DVdd voltages. The device will offer full functionality up to the highest specified clock frequencies for DVdd values of 1.65 to 1.95V. * AVdd - This pin is either a supply input to the device, or if the internal LDO is used it is used to connect an external capacitor. It supplies the analog core of the device. The analog core voltage (AVdd) may be in the range of 1.5 to 1.95V for specified performance. For AVdd voltages above 1.8V, the internal common mode voltage can be set to 0.9V (Pg 1, Reg 10, D(6)=0, default) resulting in 500mVrms full-scale voltage internally. For AVdd voltages below 1.8V, the internal common mode voltage should be set to 0.75V (Pg 1, Reg 10, D(6)=1), resulting in 375mVrms internal full scale voltage. At powerup, AVDD is weakly connected to DVDD. This coarse AVDD generation must be turned off by writing Pg 1, Reg 1, D(3) = 1 at the time AVDD is applied, either from internal LDO or through external LDO. * LDOin - The LDOin pin serves two main functions. It serves as supply to internal LDOs as well as to the analog-output amplifiers of the device. The LDOin voltage can range from 1.9V to 3.6V. In conjunction with the two internal LDOs for AVdd and DVdd the device can run from a single supply. Submit Documentation Feedback Application Information 93 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com For cases where high output voltages from the line out amplifiers (1Vrms) or high output power from the headphone amplifier is required, the LDOin voltage is used as a supply. 5.18.1 System Level Considerations While there is flexibility in supplying the device through multiple options of power supplies, care must be taken to stay within safe areas when going to standby and shutdown modes. In summary, the lowest shutdown current is achieved when all supplies to the device are turned off, implying that all settings must be reapplied to the device after bringing the power back up. In order to retain settings in the device, the DVdd voltage and either internally or externally the AVdd voltage also must be maintained. In this case the TLV320AIC3204 exhibits shutdown currents of below 1A.(If DVdd is generated by internal LDO, add 50A) 5.18.1.1 Supply from single voltage rail (1.9 to 3.6V) The device can be powered directly from a single 3.3V rail through the LDOin pin. During operation the DVdd LDO is activated via the LDO_select pin, and the AVdd LDO is activated via control registers (Pg 1, Reg 2, D(0)=1). 5.18.1.1.1 Standby Mode (3.3V operation) To put the device in standby mode, the AVdd and DVdd LDOs as well as the Reference Block (Pg 1, Reg 123, D(2:0) = 101) must stay on, and all other blocks powered down. This results in a standby current of approximately 180A. In standby mode, the device responds quickly to playback requests. 5.18.1.1.2 Sleep Mode (3.3V operation) In this mode all settings and memory content of the device are retained. To put the device into sleep mode, the DVdd LDO must remain powered up (LDO_select pin), the AVdd LDO must be powered down (Pg 1, Reg 2, D(0)=0), the crude AVdd generation must be turned on (Pg 1, Reg 1, D(3)=0) and the analog blocks must be powered down (Pg 1, Reg 2, D(3)=1). The sleep-mode power consumption is approximately 50A 5.18.1.1.3 Shutdown Mode To shutdown the device, the external supply can be turned off completely. 5.18.1.2 Supply from single voltage rail (1.8V). If a single 1.8V rail is used, generating the 1.8V from a higher battery voltage via a DC-DC converter results in good system-level efficiency. In this setup, the line-output voltage is limited to 500mVrms, and the maximum headphone output power is 15mW into 16. The 1.8V rail can be connected directly to the DVdd pin (LDO_select pin connected to ground) and also supply the digital core voltage. Connecting the 1.8V rail to the AVdd pin will make the device function, but the achievable performance is a function of the voltage ripple typically found on DC-DC converter outputs. To achieve specified performance, an external low-input-voltage 1.6V LDO must be connected between the 1.8V rail and the AVdd input. During operation, the DVdd and AVdd LDOs are deactivated (LDO_select pin and via control register Pg 1, Reg 2, D(0)=0). In this case the LDOin pin should be connected to DVdd. 5.18.1.2.1 Standby Mode (1.8V operation) To put the device in standby mode, both external voltages (AVdd and DVdd) and the reference block inside the TLV320AIC3204 must stay on (Pg 1, Reg 123, D(2:0) = 101), all other blocks should be powered down. This results in standby current of approximately 50A. In standby mode the device responds very quickly to playback requests. 94 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 5.18.1.2.2 Sleep Mode (1.8V operation) In this mode, all settings and memory content of the device is retained. To put the device into sleep mode, the external DVdd must remain powered up, the external AVdd LDO must be powered down, the crude AVdd generation must be turned on (Pg 1, Reg 1, D(3)=0) and the analog blocks must be powered down (Pg 1, Reg 2, D(3)=1). The device's sleep mode power consumption in this case is < 1A 5.18.1.2.3 Shutdown Mode To shut down the device, the external supplies can be turned off completely. If the 1.8V rail cannot be turned off, the crude AVdd generation must be turned on (Pg 1, Reg 1, D(3)=0) and the analog blocks must be powered down (Pg 1, Reg 2, D(3)=1). This results in a device shutdown current < 1A. 5.18.1.3 Other Supply Options There are other options to power the device. Apply the following rules: * During normal operation all supply pins must be connected to a supply (via internal LDO or external) * Whenever the LDOin supply is present, - DVdd supply must be present as well - If AVdd supply is not present, then the crude internal AVdd generation must be turned on (Pg 1, Reg 1, D(3)=0) * Whenever the DVdd supply is on, and either AVdd or LDOin or both supplies are off, the analog blocks must be powered down (Pg 1, Reg 2, D(3)=1) 5.19 REFERENCE All data converters require a DC reference voltage. The TLV320AIC3204 achieves its low-noise performance by internally generating a low-noise reference voltage. This reference voltage is generated using a band-gap circuit with a good PSRR performance. This reference voltage must be filtered externally using a minimum 1F capacitor connected from the REF pin to analog ground (AVss). To achieve low power consumption, this reference block is powered down when all analog blocks inside the device are powered down. In this condition, the REF pin is 3-stated. On powerup of any analog block, the reference block is also powered up and the REF pin settles to its steady-state voltage after the settling time (a function of the de-coupling capacitor on the REF pin). This time is approximately equal to 1 second when using a 1F decoupling capacitor. In the event that a faster power-up is required, either the reference block can be kept powered up (even when no other analog block is powered up) by programming Page 1, Register 123, D(2) = 1. However, in this case, an additional 125A of current from DVdd and 105A of current from AVdd is consumed. Additionally, to achieve a faster powerup, a fast-charge option is also provided where the charging time can be controlled between 40ms and 120ms by programming Page 1, Register 123, D(1:0). By default, the fast charge option is disabled. 5.20 SETTING DEVICE COMMON MODE The TLV320AIC3204 allows the user to set the common mode voltage for analog inputs to 0.75V or 0.9V by programming Page 1, Register 10, D(6). The input common-mode voltage of 0.9V works best when the analog supply voltage is centered around 1.8V or above, and offers the highest possible performance. For analog supply voltages below 1.8V, a common mode voltage of 0.75V must be used. Table 5-26. Input Common Mode voltage and Input Signal Swing Input Common Mode Voltage (V) AVdd (V) Channel Gain (dB) Single-Ended Input Swing for 0dBFS output signal (VRMS) Differential Input Swing for 0dBFS output signal (VRMS) 0.75 >1.5 0 0.375 0.75 0.90 1.8 ... 1.95 0 0.5 1.0 Submit Documentation Feedback Application Information 95 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com The choice of input common mode of 0.75V allows the use of PowerTune mode PTM_R1 which results in significantly lower power dissipation. (see Section 5.5) An input common-mode voltage of 0.9V allows the user to maximize the signal swings and SNR. NOTE The input common mode setting is common for ADC record, DAC playback and Analog Bypass path 5.21 DEVICE SPECIAL FUNCTIONS 5.21.1 Headset Detection The TLV320AIC3204 includes extensive capability to monitor a headphone, microphone, or headset jack, to determine if a plug has been inserted into the jack, and then determine what type of headset/headphone is wired to the plug. The device also includes the capability to detect a button press, even, for example, when starting calls on mobile phones with headsets. This feature is available while using I2C protocol for control interface. The figure shows the circuit configuration to enable this feature. 1 s g s 3 s HPR g HPL s Micpga m m SCLK MICBIAS Micbias Figure 5-58. Jack Connections for Headset Detection This feature is enabled by programming Page 0, Register 67, D(1). In order to avoid false detections due to mechanical vibrations in headset jacks or microphone buttons, a debounce function is provided for glitch rejection. For the case of headset insertion, a debounce function with a range of 32ms - 512ms is provided. This can be programmed via Page 0, Register 67, D(4:2). For improved button-press detection, the debounce function has a range of 8ms to 32ms by programming Page 0, Register 67, D(1:0). The TLV320AIC3204 also provides feedback to user when a button press, or a headset insertion/removal event is detected through register readable flags as well as an interrupt on the IO pins. The value in Page 0, Register 45, D(5:4) provides the instantaneous state of button press and headset insertion. Page 0, Register 44, D(5) is a sticky (latched) flag that is set when the button-press event is detected. Page 0, Register 44, D(4) is a sticky flag which is set when the headset insertion or removal event is detected. These sticky flags are set by the event occurrence, and are reset only when read. This requires polling Page 0, Register 44. To avoid polling and the associated overhead, the TLV320AIC3204 also provides an interrupt feature where the events can trigger the INT1 and/or INT2 interrupts. These interrupt events can be routed to one of the digital output pins. Please refer to Section 5.21.2 for details. 96 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 The TLV320AIC3204 not only detects a headset insertion event, but also is able to distinguish between the different headsets inserted such as stereo headphones or cellular headphones. After the headset-detection event, the user can read Page 0, Register 67, D(6:5) to determine the type of headset inserted. Table 5-27. Headset Detection Block Registers Register Description Page 0, Register 67, D(1) Headset Detection Enable/Disable Page 0, Register 67, D(4:2) Debounce Programmability for Headset Detection Page 0, Register 67, D(1:0) Debounce Programmability for Button Press Page 0, Register 44, D(5) Sticky Flag for Button Press Event Page 0, Register 44, D(4) Sticky Flag for Headset Insertion or Removal Event Page 0, Register 45, D(5) Status Flag for Button Press Event Page 0, Register 45, D(4) Status Flag for Headset Insertion and Removal Page 0, Register 67, D(6:5) Flags for type of Headset Detected The headset detection block requires AVdd to be powered and Master Analog Power control in Page 1, Register 2, D(3) to be enabled. The headset detection feature in the TLV320AIC3204 is achieved with a very low power overhead, requiring less than 20A of additional current from AVdd supply. 5.21.2 Interrupts Some specific events in the TLV320AIC3204 which may require host processor intervention, can be used to trigger interrupts to the host processor. This avoids polling the status-flag registers continuously. The TLV320AIC3204 has two defined interrupts; INT1 and INT2 that can be configured by programming Page 0, Register 48 and 49. A user can configure the interrupts INT1 and INT2 to be triggered by one or many events such as * Headset Detection * Button Press * DAC DRC Signal exceeding Threshold * Noise detected by AGC * Over-current condition in headphones * Data Overflow in ADC and DAC Processing Blocks and Filters and * DC Measurement Data Available Each of these INT1 and INT2 interrupts can be routed to output pins like GPIO, DOUT and MISO by configuring the respective output control registers in Page 0, Register 52, 53 and 55. These interrupt signals can either be configured as a single pulse or a series of pulses by programming Page 0, Register 48, D(0) and Page 0, Register 49, D(0). If the user configures the interrupts as a series of pulses, the events will trigger the start of pulses that will stop when the flag registers in Page 0, Register 42, 44 and 45 are read by the user to determine the cause of the interrupt. 5.22 EXAMPLE SETUPS The following example setups can be taken directly for the TLV320AIC3204 EVM setup. The # marks a comment line, w marks an I2C write command followed by the device address, the I2C register address and the value. 5.22.1 Stereo DAC Playback with 48ksps Sample Rate and High Performance. Assumption AVdd = 1.8V, DVdd = 1.8V MCLK = 12.288MHz Ext C = 47uF Based on C the wait time will change. Wait time = N*Rpop*C + 4* Offset ramp time Submit Documentation Feedback Application Information 97 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Default settings used. PLL Disabled DOSR 128 # Initialize to Page 0 w 30 00 00 # Initialize the device through software reset w 30 01 01 # Power up the NDAC divider with value 1 w 30 0b 81 # Power up the MDAC divider with value 2 w 30 0c 82 # Program the OSR of DAC to 128 w 30 0d 00 w 30 0e 80 # Set the word length of Audio Interface to 20bits PTM_P4 w 30 1b 10 # Set the DAC Mode to PRB_P8 w 30 3c 08 # Select Page 1 w 30 00 01 # Disable Internal Crude AVdd in presence of external AVdd supply or before #powering up internal AVdd LDO w 30 01 08 # Enable Master Analog Power Control w 30 02 00 # Set the REF charging time to 40ms w 30 7b 01 # HP soft stepping settings for optimal pop performance at power up # Rpop used is 6k with N = 6 & soft step = 20usec. This should work with 47uF coupling # capacitor. Can try N=5,6 or 7 time constants as well. Trade-off delay vs "pop" sound. w 30 14 25 # Set the Input Common Mode to 0.9V and Output Common Mode for Headphone to # Input Common Mode w 30 0a 00 # Route Left DAC to HPL w 30 0c 08 # Route Right DAC to HPR w 30 0d 08 # Set the DAC PTM mode to PTM_P3/4 w 30 03 00 w 30 04 00 # Set the HPL gain to 0dB w 30 10 00 # Set the HPR gain to 0dB w 30 11 00 # Power up HPL and HPR drivers w 30 09 30 # Wait for 2.5 sec for soft stepping to take effect # Else read Page 1, Register 63d, D(7:6). When = "11" soft-stepping is complete # Select Page 0 w 30 00 00 # Power up the Left and Right DAC Channels with route the Left Audio digital data to # Left Channel DAC and Right Audio digital data to Right Channel DAC w 30 3f d6 # Unmute the DAC digital volume control w 30 40 00 5.22.2 Stereo DAC Playback with 48ksps Sample Rate and Low Power Mode Assumption AVdd = 1.8V, DVdd = 1.8V MCLK = 12.288MHz Ext C = 47F Based on C the wait time will change. Wait time = N*Rpop*C + 4* Offset ramp time Default settings used. PLL Disabled # Initialize to Page 0 w 30 00 00 # Initialize the device through software reset w 30 01 01 # Power up the NDAC divide with value 1 w 30 0b 81 98 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 # w # w w # w # w # # w # w # w # # # w # # w # w # w # w w # w # w # w # # # w # # w # w Power up the MDAC divider with value 4 30 0c 84 Program the OSR of DAC to 64 30 0d 00 30 0e 40 Set the DAC Mode to PRB_P8 30 3c 08 Select Page 1 30 00 01 Disable Internal Crude AVdd in presence of external AVdd supply or before powering up internal AVdd LDO 30 01 08 Enable Master Analog Power Control 30 02 00 Set the REF charging time to 40ms 30 7b 01 HP soft stepping settings for optimal pop performance at power up Rpop used is 6k with N = 6 & soft step = 20usec. This should work with 47uF coupling capacitor. Can try N=5,6 or 7 time constants as well. Trade-off delay vs "pop" sound. 30 14 25 Set the Input Common Mode to 0.9V and Output Common Mode for Headphone to Input Common Mode 30 0a 00 Route Left DAC to HPL 30 0c 08 Route Right DAC to HPR 30 0d 08 Set the DAC PTM mode to PTM_P1 30 03 08 30 04 08 Set the HPL gain to 0dB 30 10 00 Set the HPR gain to 0dB 30 11 00 Power up HPL and HPR drivers 30 09 30 Wait for 2.5 sec for soft stepping to take effect Else read Page 1, Register 63d, D(7:6). When = "11" soft-stepping is complete Select Page 0 30 00 00 Power up the Left and Right DAC Channels with route the Left Audio digital data to Left Channel DAC and Right Audio digital data to Right Channel DAC 30 3f d6 Unmute the DAC digital volume control 30 40 00 5.22.3 DAC Playback Through Class-D Headphone Amplifiers Power Up # Assumption DAC_FS = 48000Hz # MCLK = 24.576MHz # I2S Interface in Slave Mode # w # w # w # # w # w w # w Initialize to Page 0 30 00 00 Initialize the device through software reset 30 01 01 Power up the NDAC divider with value 1 30 0B 81 Power up the MDAC divider with value 4 For Class-D mode, MDAC = I*4 30 0C 84 Program the OSR of DAC to 128 30 0D 00 30 0E 80 Set the DAC Mode to PRB_P1v 30 3C 01 # w # # w Select Page 1 30 00 01 Disable Internal Crude AVdd in presence of external AVdd supply or before powering up internal AVdd LDO 30 01 08 Submit Documentation Feedback Application Information 99 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com # w # w # # w # # w # w # w # w # w # w # w Enable Master Analog Power Control 30 02 00 Set the REF charging time to 40ms 30 7B 01 HP soft stepping settings for optimal pop performance at power up Rpop used is 6k with N = 6 & soft step = 0 30 14 25 Set the Input Common Mode to 0.9V and Output Common Mode for Headphone to Input Common Mode 30 0A 00 Route Left DAC to HPL 30 0C 08 Route Right DAC to HPR 30 0D 08 Unmute HPL driver 30 10 00 Unmute HPR driver 30 11 00 Power up HPL and HPR drivers 30 09 30 switch to Page 0 30 00 00 # # w # w Wait for soft stepping to take effect L&R DAC powerup Ldata-LDAC Rdata-RDAC 30 3F d4 Left and Right DAC unmuted with indep. vol. ctrl 30 40 00 # Wait for DAC vol ctrl soft-stepping to complete # Select Page 1 w # w # w # w 30 00 01 Enable Class-D mode for HPL output 30 03 C0 Enable Class-D mode for HPR output 30 04 C0 Power down HPL and HPR drivers 30 09 00 Power Down # Select Page 0 w 30 00 00 # Mute the DAC digital volume control w 30 40 0d # Power down the DAC W 30 3F C0 # Disable Class-D mode for HPL output w 30 03 00 # Disable Class-D mode for HPL output w 30 04 00 5.22.4 Stereo ADC with 48ksps Sample Rate and High Performance Assumption AVdd = 1.8V, DVdd = 1.8V MCLK = 12.288MHz Default settings used. PLL Disabled I2S Interface with 16bit Word Length. AOSR 128 PRB_R1 PTM_R4 # w # w # w # 100 Initialize to Page 0 30 00 00 S/W Reset to initialize all registers 30 01 01 Power up NADC divider with value 1 30 12 81 Power up MADC divider with value 2 Application Information Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 w # w # w # w # # w # w # w # w # w # w # w # w # w # w # # w # # w # w # w # w 30 13 82 Program OSR for ADC to 128 30 14 80 Select ADC PRB_R1 30 3d 01 Select Page 1 30 00 01 Disable Internal Crude AVdd in presence of external AVdd supply or before powering up internal AVdd LDO 30 01 08 Enable Master Analog Power Control 30 02 00 Set the input common mode to 0.9V 30 0a 00 Select ADC PTM_R4 30 3d 00 Set MicPGA startup delay to 3.1ms 30 47 32 Set the REF charging time to 40ms 30 7b 01 Route IN1L to LEFT_P with 20K input impedance 30 34 80 Route Common Mode to LEFT_M with impedance of 20K 30 36 80 Route IN1R to RIGHT_P with input impedance of 20K 30 37 80 Route Common Mode to RIGHT_M with impedance of 20K 30 39 80 Unmute Left MICPGA, Gain selection of 6dB to make channel gain 0dB Register of 6dB with input impedance of 20K => Channel Gain of 0dB 30 3b 0c Unmute Right MICPGA, Gain selection of 6dB to make channel gain 0dB Register of 6dB with input impedance of 20K => Channel Gain of 0dB 30 3c 0c Select Page 0 30 00 00 Power up Left and Right ADC Channels 30 51 c0 Unmute Left and Right ADC Digital Volume Control. 30 52 00 5.22.5 Stereo ADC with 48ksps Sample Rate and Low Power Assumption AVdd = 1.8V, DVdd = 1.8V MCLK = 12.288MHz Default settings used. PLL Disabled I2S Interface with 16bit Word Length. # Initialize to Page 0 w 30 00 00 # S/W Reset to initialize all registers w 30 01 01 # Power up NADC divider with value 1 w 30 12 81 # Power up MADC divider with value 4 w 30 13 84 # Program OSR for ADC to 64 w 30 14 40 # Select ADC PRB_R7 w 30 3d 07 # Select Page 1 w 30 00 01 # Disable Internal Crude AVdd in presence of external AVdd supply or before #powering up internal AVdd LDO w 30 01 08 # Enable Master Analog Power Control w 30 02 00 # Set the input common mode to 0.75V w 30 0a 40 # Select ADC PTM_R1 w 30 3d ff Submit Documentation Feedback Application Information 101 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 102 # w # w # w # w # w # w # # w Set MicPGA startup delay to 3.1ms 30 47 32 Set the REF charging time to 40ms 30 7b 01 Route IN1L to LEFT_P with 20K input impedance 30 34 80 Route Common Mode to LEFT_M with impedance of 20K 30 36 80 Route IN1R to RIGHT_P with input impedance of 20K 30 37 80 Route Common Mode to RIGHT_M with impedance of 20K 30 39 80 Unmute Left MICPGA, Gain selection of 6dB to make channel gain 0dB Register of 6dB with input impedance of 20K => Channel Gain of 0dB 30 3b 0c # # w # w # w # w Unmute Right MICPGA, Gain selection of 6dB to make channel gain 0dB Register of 6dB with input impedance of 20K => Channel Gain of 0dB 30 3c 0c Select Page 0 30 00 00 Power up Left and Right ADC Channels 30 51 c0 Unmute Left and Right ADC Digital Volume Control. 30 52 00 Application Information www.ti.com Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6 REGISTER MAP The TLV320AIC3204 contains 38 pages of 8-bit registers, each page can contain up to 128 registers. The register pages are divided up based on functional blocks for this device. Page 0 is the default "home" page after hardware reset. 6.1 Register Map Summary Table 6-1. Summary of Register Map PAGE NO. DESCRIPTION 0 Configuration for Serial Interface, Digital IO, Clocking 1 Configuration for Analog PGA's, ADC, DAC, Output.Drivers, Volume controls etc 2-7 Reserved 8 ADC adaptive filtering control and Coefficient Buffer-A (0:29). Refer to Table 6-3 and Table 6-4 for more details. 9-10 ADC Coefficient Buffer-A (30:63). Refer to Table 6-3 and Table 6-4 for more details. 11-25 Reserved. 26-28 ADC Coefficient Buffer-B (0:63). Refer to Table 6-2 and Table 6-4 for more details. 29-43 Reserved. 44 DAC adaptive filtering control and Coefficient Buffer-A (0:29). Refer to Table 6-5 and Table 6-7 for more details. 45-46 DAC Coefficient BufferA (30:76). Refer Table 6-5 and Table 6-7 for more details. 47-61 Reserved. 62-64 DAC Coefficient BufferB C(0:76). Refer Table 6-6 and Table 6-7 for more details. 6.2 Register Map Details 6.2.1 Page 0 / Register 0: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 6.2.2 Page 0 / Register 1: BIT READ/ WRITE RESET VALUE D7-D1 R 0000 000 D0 W 0 6.2.3 Page 0 / Register 2: BIT READ/ WRITE D7-D0 R 6.2.4 Page Select Register DESCRIPTION Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. Software Reset Register DESCRIPTION Reserved, Write only default values Self clearing software reset bit 0: Don't care 1: Self clearing software reset Reserved Register RESET VALUE DESCRIPTION 0XXX 0XXX Reserved, Write only default values Page 0 / Register 3: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Submit Documentation Feedback Reserved Register DESCRIPTION Reserved, Write only default values to this register REGISTER MAP 103 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.5 Page 0 / Register 4: www.ti.com Clock Setting Register 1, Multiplexers BIT READ/ WRITE RESET VALUE D7 R 0 Reserved, Write only default values D6 R/W 0 Select PLL Range 0: Low PLL Clock Range 1: High PLL Clock Range D5-D4 R 00 Reserved, Write only default values any other value than reset value. D3-D2 R/W 00 Select PLL Input Clock 00: MCLK pin is input to PLL 01: BCLK pin is input to PLL 10: GPIO pin is input to PLL 11: DIN pin is input to PLL D1-D0 R/W 00 Select CODEC_CLKIN 00: MCLK pin is CODEC_CLKIN 01: BCLK pin is CODEC_CLKIN 10: GPIO pin is CODEC_CLKIN 11: PLL Clock is CODEC_CLKIN 6.2.6 Page 0 / Register 5: DESCRIPTION Clock Setting Register 2, PLL P&R Values BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D4 R/W 001 PLL divider P Value 000: P=8 001: P=1 010: P=2 ... 110: P=6 111: P=7 D3-D0 R/W 0001 PLL divider R Value 000: Reserved, do not use 001: R=1 010: R=2 011: R=3 100: R=4 101...111: Reserved, do not use 6.2.7 Page 0 / Register 6: READ/ WRITE BIT R 00 D5-D0 R/W 00 0100 Page 0 / Register 7: BIT READ/ WRITE RESET VALUE D7-D6 R 00 104 REGISTER MAP PLL Power Up 0: PLL is powered down 1: PLL is powered up Clock Setting Register 3, PLL J Values RESET VALUE D7-D6 6.2.8 DESCRIPTION DESCRIPTION Reserved. Write only default values any value other than default PLL divider J value 00 0000...00 0011: Do not use 00 0100: J=4 00 0101: J=5 ... 11 1110: J=62 11 1111: J=63 Clock Setting Register 4, PLL D Values (MSB) DESCRIPTION Reserved. Write only default values any value other than default Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D5-D0 R/W 00 0000 6.2.9 DESCRIPTION PLL divider D value (MSB) PLL divider D value(MSB) &amp; PLL divider D value(LSB) 00 0000 0000 0000: D=0000 00 0000 0000 0001: D=0001 ... 10 0111 0000 1110: D=9998 10 0111 0000 1111: D=9999 10 0111 0001 0000...11 1111 1111 1111: Do not use Note: This register will be updated only when the Page-0, Reg-8 is written immediately after Page-0, Reg-7 Page 0 / Register 8: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 Clock Setting Register 5, PLL D Values (LSB) DESCRIPTION PLL divider D value (LSB) PLL divider D value(MSB) & PLL divider D value(LSB) 00 0000 0000 0000: D=0000 00 0000 0000 0001: D=0001 ... 10 0111 0000 1110: D=9998 10 0111 0000 1111: D=9999 10 0111 0001 0000...11 1111 1111 1111: Do not use Note: Page-0, Reg-8 should be written immediately after Page-0, Reg-7 6.2.10 Page 0 / Register 9-10: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 DESCRIPTION Reserved, Write only default values. 6.2.11 Page 0 / Register 11: BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D0 R/W 000 0001 READ/ WRITE RESET VALUE D7 R/W 0 D6-D0 R/W 000 0001 Submit Documentation Feedback Clock Setting Register 6, NDAC Values DESCRIPTION NDAC Divider Power Control 0: NDAC divider powered down 1: NDAC divider powered up NDAC Value 000 0000: NDAC=128 000 0001: NDAC=1 000 0010: NDAC=2 ... 111 1110: NDAC=126 111 1111: NDAC=127 Note: Please check the clock frequency requirements in the Overview section 6.2.12 Page 0 / Register 12: BIT Reserved Register Clock Setting Register 7, MDAC Values DESCRIPTION MDAC Divider Power Control 0: MDAC divider powered down 1: MDAC divider powered up MDAC Value 000 0000: MDAC=128 000 0001: MDAC=1 000 0010: MDAC=2 ... 111 1110: MDAC=126 111 1111: MDAC=127 Note: Please check the clock frequency requirements in the Overview section REGISTER MAP 105 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.13 Page 0 / Register 13: BIT READ/ WRITE RESET VALUE D7-D2 R 0000 00 D1-D0 R/W 00 READ/ WRITE RESET VALUE D7-D0 R/W 1000 0000 Reserved. Write only default values DAC OSR (DOSR) Setting DAC OSR(MSB) & DAC OSR(LSB) 00 0000 0000: DOSR=1024 00 0000 0001: DOSR=1 00 0000 0010: DOSR=2 ... 11 1111 1110: DOSR=1022 11 1111 1111: DOSR=1023 Note: This register is updated when Page-0, Reg-14 is written to immediately after Page-0, Reg-13 Note: DOSR should be a multiple of 2 while using DAC Filter Type A, Multiple of 4 while using DAC Filter Type B and Multiple of 8 while using DAC Filter Type C READ/ WRITE RESET VALUE D7-D0 R 0000 0010 DAC OSR (DOSR) Setting DAC OSR(MSB) & DAC OSR(LSB) 00 0000 0000: DOSR=1024 00 0000 0001: Reserved. Do not use 00 0000 0010: DOSR=2 ... 11 1111 1110: DOSR=1022 11 1111 1111: Reserved. Do not use Note: This register should be written immediately after Page-0, Reg-13 Note: DOSR should be a multiple of 2 while using DAC Filter Type A, Multiple of 4 while using DAC Filter Type B and Multiple of 8 while using DAC Filter Type C READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 Reserved. Write only default value BIT RESET VALUE D7-D0 R 0000 1000 Reserved. Write only default value READ/ WRITE RESET VALUE D7 R/W 0 D6-D0 R/W 000 0001 106 REGISTER MAP Reserved Register DESCRIPTION Reserved. Write only default values 6.2.18 Page 0 / Register 18: BIT Reserved Register DESCRIPTION 6.2.17 Page 0 / Register 17: READ/ WRITE Reserved Register DESCRIPTION 6.2.16 Page 0 / Register 16: BIT DAC OSR Setting Register 2, LSB Value DESCRIPTION 6.2.15 Page 0 / Register 15: BIT DAC OSR Setting Register 1, MSB Value DESCRIPTION 6.2.14 Page 0 / Register 14: BIT www.ti.com Clock Setting Register 8, NADC Values DESCRIPTION NADC Clock Divider Power Control 0: NADC divider powered down, ADC_CLK is same as DAC_CLK 1: NADC divider powered up NADC Value 000 0000: NADC=128 000 0001: NADC=1 ... 111 1110: NADC=126 111 1111: NADC=127 Note: Pls check the clock frequency requirements in the Overview section Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.19 Page 0 / Register 19: BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D0 R/W 000 0001 DESCRIPTION MADC Clock Divider Power Control 0: MADC divider powered down, ADC_MOD_CLK is same as DAC_MOD_CLK 1: MADC divider powered up MADC Value 000 0000: MADC=128 000 0001: MADC=1 ... 111 1110: MADC=126 111 1111: MADC=127 Note: Pls check the clock frequency requirements in the Overview section 6.2.20 Page 0 / Register 20: BIT READ/ WRITE RESET VALUE D7-D0 R/W 1000 0000 READ/ WRITE RESET VALUE D7-D0 R 0000 0001 ADC Oversampling Value 0000 0000: ADC AOSR = 256 0000 0001-0001 1111: Reserved. Do not use 0010 0000: ADC AOSR=32 (Use with PRB_R13 to PRB_R18, ADC Filter Type C) 0010 0001-0011 1111: Reserved.Do not use 0100 0000: AOSR=64 (Use with PRB_R1 to PRB_R12, ADC Filter Type A or B) 0100 0001-0111 1111: Reserved. Do not use 1000 0000: AOSR=128(Use with PRB_R1 to PRB_R6, ADC Filter Type A) 1000 0001-1111 1111: Reserved. Do not use READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved. Write only default values BIT RESET VALUE D7-D0 R 0000 0100 Reserved. Write only default values READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved. Write only default values READ/ WRITE RESET VALUE D7-D3 R 0000 0 Submit Documentation Feedback Reserved Register DESCRIPTION Reserved. Write only default values 6.2.25 Page 0 / Register 25: BIT Reserved Register DESCRIPTION 6.2.24 Page 0 / Register 24: BIT Reserved Register DESCRIPTION 6.2.23 Page 0 / Register 23: READ/ WRITE Reserved Register DESCRIPTION 6.2.22 Page 0 / Register 22: BIT ADC Oversampling (AOSR) Register DESCRIPTION 6.2.21 Page 0 / Register 21: BIT Clock Setting Register 9, MADC Values Clock Setting Register 9, Multiplexers DESCRIPTION Reserved. Write only default values REGISTER MAP 107 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D2-D0 R/W 000 DESCRIPTION CDIV_CLKIN Clock Selection 000: CDIV_CLKIN= MCLK 001: CDIV_CLKIN= BCLK 010: CDIV_CLKIN=DIN 011: CDIV_CLKIN=PLL_CLK 100: CDIV_CLKIN=DAC_CLK 101: CDIV_CLKIN=DAC_MOD_CLK 110: CDIV_CLKIN=ADC_CLK 111: CDIV_CLKIN=ADC_MOD_CLK 6.2.26 Page 0 / Register 26: BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D0 R/W 000 0001 Clock Setting Register 10, CLKOUT M divider value DESCRIPTION CLKOUT M divider power control 0: CLKOUT M divider powered down 1: CLKOUT M divider powered up CLKOUT M divider value 000 0000: CLKOUT M divider = 128 000 0001: CLKOUT M divider = 1 000 0010: CLKOUT M divider = 2 ... 111 1110: CLKOUT M divider = 126 111 1111: CLKOUT M divider = 127 Note: Please check the clock frequencies in the Overview section 6.2.27 Page 0 / Register 27: Audio Interface Setting Register 1 BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 Audio Interface Selection 00: Audio Interface = I2S 01: Audio Interface = DSP 10: Audio Interface = RJF 11: Audio Interface = LJF D5-D4 R/W 00 Audio Data Word length 00: Data Word length = 16 01: Data Word length = 20 10: Data Word length = 24 11: Data Word length = 32 DESCRIPTION D3 R/W 0 BCLK Direction Control 0: BCLK is input to the device 1: BCLK is output from the device D2 R/W 0 WCLK Direction Control 0: WCLK is input to the device 1: WCLK is output from the device D1 R 0 Reserved. Write only default value D0 R/W 0 DOUT High Impendance Output Control 0: DOUT will not be high impedance while Audio Interface is active 1: DOUT will be high impedance after data has been transferred 6.2.28 Page 0 / Register 28: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 108 bits bits bits bits REGISTER MAP Audio Interface Setting Register 2, Data offset setting DESCRIPTION Data Offset Value 0000 0000: Data Offset 0000 0001: Data Offset ... 1111 1110: Data Offset 1111 1111: Data Offset = 0 BCLK's = 1 BCLK's = 254 BCLK's = 255 BCLK's Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.29 Page 0 / Register 29: Audio Interface Setting Register 3 BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 Reserved. Write only default values D5 R/W 0 Loopback control 0: No Loopback 1: Audio Data in is routed to Audio Data out D4 R/W 0 Loopback control 0: No Loopback 1: Stereo ADC output is routed to Stereo DAC input D3 R/W 0 Audio Bit Clock Polarity Control 0: Default Bit Clock polarity 1: Bit Clock is inverted w.r.t. default polarity D2 R/W 0 Primary BCLK and Primary WCLK Power control 0: Primary BCLK and Primary WCLK buffers are powered up when they are used in clock generation even when the codec is powered down 1: Priamry BCLK and Primary WCLK buffers are powered down when the codec is powered down D1-D0 R/W 00 BDIV_CLKIN Multiplexer Control 00: BDIV_CLKIN = DAC_CLK 01: BDIV_CLKIN = DAC_MOD_CLK 10: BDIV_CLKIN = ADC_CLK 11: BDIV_CLKIN = ADC_MOD_CLK DESCRIPTION 6.2.30 Page 0 / Register 30: BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D0 R/W 000 0001 DESCRIPTION BCLK N Divider Power Control 0: BCLK N divider powered down 1: BCLK N divider powered up BCLK N Divider value 0000 0000: BCLK N divider 0000 0001: BCLK N divider ... 1111 1110: BCLK N divider 1111 1111: BCLK N divider 6.2.31 Page 0 / Register 31: BIT READ/ WRITE Clock Setting Register 11, BCLK N Divider = 128 =1 = 126 = 127 Audio Interface Setting Register 4, Secondary Audio Interface RESET VALUE DESCRIPTION D7 R 0 Reserved. Write only default values D6-D5 R/W 00 Secondary Bit Clock Multiplexer 00: Secondary Bit Clock = GPIO 01: Secondary Bit Clock = SCLK 10: Secondary Bit Clock = MISO 11: Secondary Bit Clock = DOUT D4-D3 R/W 00 Secondary Word Clock Multiplexer 00: Secondary Word Clock = GPIO 01: Secondary Word Clock = SCLK 10: Secondary Word Clock = MISO 11: Secondary Word Clock = DOUT D2-D1 R/W 00 ADC Word Clock Multiplexer 00: ADC Word Clock = GPIO 01: ADC Word Clock = SCLK 10: ADC Word Clock = MISO 11: Do not use D0 R/W 0 Secondary Data Input Multiplexer 0: Secondary Data Input = GPIO 1: Secondary Data Input = SCLK Submit Documentation Feedback REGISTER MAP 109 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.32 Page 0 / Register 32: www.ti.com Audio Interface Setting Register 5 BIT READ/ WRITE RESET VALUE D7-D4 R 0000 D3 R/W 0 Primary / Secondary Bit Clock Control 0: Primary Bit Clock(BCLK) is used for Audio Interface and Clocking 1: Secondary Bit Clock is used for Audio Interface and Clocking D2 R/W 0 Primary / Secondary Word Clock Control 0: Primary Word Clock(WCLK) is used for Audio Interface 1: Secondary Word Clock is used for Audio Interface D1 R/W 0 ADC Word Clock Control 0: ADC Word Clock is same as DAC Word Clock 1: ADC Word Clock is Secondary ADC Word Clock D0 R/W 0 Audio Data In Control 0: DIN is used for Audio Data In 1: Secondary Data In is used for Audio Data In DESCRIPTION Reserved. Write only default values 6.2.33 Page 0 / Register 33: Audio Interface Setting Register 6 BIT READ/ WRITE RESET VALUE D7 R/W 0 BCLK Output Control 0: BCLK Output = Generated Primary Bit Clock 1: BCLK Output = Secondary Bit Clock Input D6 R/W 0 Secondary Bit Clock Output Control 0: Secondary Bit Clock = BCLK input 1: Secondary Bit Clock = Generated Primary Bit Clock D5-D4 R/W 00 WCLK Output Control 00: WCLK Output = Generated DAC_FS 01: WCLK Output = Generated ADC_FS 10: WCLK Output = Secondary Word Clock Input 11: Do not use D3-D2 R/W 00 Secondary Word Clock Output Control 00: Secondary Word Clock output = WCLK input 01: Secondary Word Clock output = Generated DAC_FS 10: Secondary Word Clock output = Generated ADC_FS 11: Do not use D1 R/W 0 Primary Data Out output control 0: DOUT output = Data Output from Serial Interface 1: DOUT output = Secondary Data Input (Loopback) D0 R/W 0 Secondary Data Out output control 0: Secondary Data Output = DIN input (Loopback) 1: Secondary Data Output = Data output from Serial Interface DESCRIPTION 6.2.34 Page 0 / Register 34: Digital Interface Misc. Setting Register BIT READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value D6 R 0 Reserved. Write only default value D5 R/W 0 I2C General Call Address Configuration 0: I2C General Call Address will be ignored 1: I2C General Call Address accepted D4-D0 R 0 0000 DESCRIPTION Reserved. Write only default values 6.2.35 Page 0 / Register 35: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 110 REGISTER MAP Reserved Register DESCRIPTION Reserved. Write only default value Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.36 Page 0 / Register 36: ADC Flag Register BIT READ/ WRITE RESET VALUE D7 R 0 Left ADC PGA Status Flag 0: Gain Applied in Left ADC PGA is not equal to Programmed Gain in Control Register 1: Gain Applied in Left ADC PGA is equal to Programmed Gain in Control Register D6 R 0 Left ADC Power Status Flag 0: Left ADC Powered Down 1: Left ADC Powered Up D5 R 0 Left AGC Gain Status. This sticky flag will self clear on reading 0: Gain in Left AGC is not saturated 1: Gain in Left ADC is equal to maximum allowed gain in Left AGC D4 R 0 Reserved. Write only default value D3 R 0 Right ADC PGA Status Flag 0: Gain Applied in Right ADC PGA is not equal to Programmed Gain in Control Register 1: Gain Applied in Right ADC PGA is equal to Programmed Gain in Control Register D2 R 0 Right ADC Power Status Flag 0: Right ADC Powered Down 1: Right ADC Powered Up D1 R 0 Right AGC Gain Status. This sticky flag will self clear on reading 0: Gain in Right AGC is not saturated 1: Gain in Right ADC is equal to maximum allowed gain in Right AGC D0 R 0 Reserved. Write only default value DESCRIPTION 6.2.37 Page 0 / Register 37: DAC Flag Register 1 BIT READ/ WRITE RESET VALUE D7 R 0 Left DAC Power Status Flag 0: Left DAC Powered Down 1: Left DAC Powered Up D6 R 0 Left Line Output Driver(LOL) Power Status Flag 0: LOL Powered Down 1: LOL Powered Up D5 R 0 Left Headphone Driver (HPL) Power Status Flag 0: HPL Powered Down 1: HPL Powered Up D4 R 0 Reserved. Write only default values D3 R 0 Right DAC Power Status Flag 0: Right DAC Powered Down 1: Right DAC Powered Up D2 R 0 Right Line Output Driver(LOR) Power Status Flag 0: LOR Powered Down 1: LOR Powered Up D1 R 0 Right Headphone Driver (HPR) Power Status Flag 0: HPR Powered Down 1: HPR Powered Up D0 R 0 Reserved. Write only default values DESCRIPTION 6.2.38 Page 0 / Register 38: BIT READ/ WRITE RESET VALUE D7-D5 R 000 D4 R 0 D3-D1 R 000 D0 R 0 Submit Documentation Feedback DAC Flag Register 2 DESCRIPTION Reserved. Write only default values Left DAC PGA Status Flag 0: Gain applied in Left DAC PGA is not equal to Gain programmed in Control Register 1: Gain applied in Left DAC PGA is equal to Gain programmed in Control Register Reserved. Write only default values Right DAC PGA Status Flag 0: Gain applied in Right DAC PGA is not equal to Gain programmed in Control Register 1: Gain applied in Right DAC PGA is equal to Gain programmed in Control Register REGISTER MAP 111 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.39 Page 0 / Register 39-41: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 www.ti.com Reserved Register DESCRIPTION Reserved. Write only default values 6.2.40 Page 0 / Register 42: Sticky Flag Register 1 BIT READ/ WRITE RESET VALUE D7 R 0 Left DAC Overflow Status. This sticky flag will self clear on read 0: No overflow in Left DAC 1: Overflow has happened in Left DAC since last read of this register D6 R 0 Right DAC Overflow Status. This sticky flag will self clear on read 0: No overflow in Right DAC 1: Overflow has happened in Right DAC since last read of this register D5-D4 R 00 Reserved. Write only default values D3 R 0 Left ADC Overflow Status. This sticky flag will self clear on read 0: No overflow in Left ADC 1: Overflow has happened in Left ADC since last read of this register D2 R 0 Right ADC Overflow Status. This sticky flag will self clear on read 0: No overflow in Right ADC 1: Overflow has happened in Right ADC since last read of this register D1-D0 R 00 Reserved. Write only default values DESCRIPTION 6.2.41 Page 0 / Register 43: Interrupt Flag Register 1 BIT READ/ WRITE RESET VALUE D7 R 0 Left DAC Overflow Status. 0: No overflow in Left DAC 1: Overflow condition is present in Left ADC at the time of reading the register D6 R 0 Right DAC Overflow Status. 0: No overflow in Right DAC 1: Overflow condition is present in Right DAC at the time of reading the register D5-D4 R 00 Reserved. Write only default values D3 R 0 Left ADC Overflow Status. 0: No overflow in Left ADC 1: Overflow condition is present in Left ADC at the time of reading the register D2 R 0 Right ADC Overflow Status. 0: No overflow in Right ADC 1: Overflow condition is present in Right ADC at the time of reading the register D1-D0 R 0 Reserved. Write only default values DESCRIPTION 6.2.42 Page 0 / Register 44: 112 Sticky Flag Register 2 BIT READ/ WRITE RESET VALUE D7 R 0 HPL Over Current Detect Flag 0: Over Current not detected on HPL 1: Over Current detected on HPL (will be cleared when the register is read) D6 R 0 HPR Over Current Detect Flag 0: Over Current not detected on HPR 1: Over Current detected on HPR (will be cleared when the register is read) D5 R 0 Headset Button Press 0: Button Press not detected 1: Button Press detected (will be cleared when the register is read) D4 R 0 Headset Insertion/Removal Detect Flag 0: Insertion/Removal event not detected 1: Insertion/Removal event detected (will be cleared when the register is read) D3 R 0 Left Channel DRC, Signal Threshold Flag 0: Signal Power is below Signal Threshold 1: Signal Power exceeded Signal Threshold (will be cleared when the register is read) REGISTER MAP DESCRIPTION Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D2 R 0 Right Channel DRC, Signal Threshold Flag 0: Signal Power is below Signal Threshold 1: Signal Power exceeded Signal Threshold (will be cleared when the register is read) D1-D0 R 00 Reserved. Write only default values DESCRIPTION 6.2.43 Page 0 / Register 45: Sticky Flag Register 3 BIT READ/ WRITE RESET VALUE D7 R 0 Reserved. D6 R 0 Left AGC Noise Threshold Flag 0: Signal Power is greater than Noise Threshold 1: Signal Power was lower than Noise Threshold (will be cleared when the register is read) D5 R 0 Right AGC Noise Threshold Flag 0: Signal Power is greater than Noise Threshold 1: Signal Power was lower than Noise Threshold (will be cleared when the register is read) D4-D3 R 00 Reserved. Write only default values D2 R 0 Left ADC DC Measurement Data Available Flag 0: Data not available 1: Data available (will be cleared when the register is read) D1 R 0 Right ADC DC Measurement Data Available Flag 0: Data not available 1: Data available (will be cleared when the register is read) D0 R 0 Reserved. Write only default values DESCRIPTION 6.2.44 Page 0 / Register 46: Interrupt Flag Register 2 BIT READ/ WRITE RESET VALUE D7 R 0 HPL Over Current Detect Flag 0: Over Current not detected on HPL 1: Over Current detected on HPL D6 R 0 HPR Over Current Detect Flag 0: Over Current not detected on HPR 1: Over Current detected on HPR D5 R 0 Headset Button Press 0: Button Press not detected 1: Button Press detected D4 R 0 Headset Insertion/Removal Detect Flag 0: Headset removal detected 1: Headset insertion detected D3 R 0 Left Channel DRC, Signal Threshold Flag 0: Signal Power is below Signal Threshold 1: Signal Power exceeded Signal Threshold D2 R 0 Right Channel DRC, Signal Threshold Flag 0: Signal Power is below Signal Threshold 1: Signal Power exceeded Signal Threshold D1-D0 R 00 Reserved. Write only default values DESCRIPTION 6.2.45 Page 0 / Register 47: Interrupt Flag Register 3 BIT READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default values D6 R 0 Left AGC Noise Threshold Flag 0: Signal Power is greater than Noise Threshold 1: Signal Power was lower than Noise Threshold Submit Documentation Feedback DESCRIPTION REGISTER MAP 113 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D5 R 0 Right AGC Noise Threshold Flag 0: Signal Power is greater than Noise Threshold 1: Signal Power was lower than Noise Threshold D4-D3 R 00 Reserved. Write only default values D2 R 0 Left ADC DC Measurement Data Available Flag 0: Data not available 1: Data available D1 R 0 Right ADC DC Measurement Data Available Flag 0: Data not available 1: Data available D0 R 0 Reserved. Write only default values DESCRIPTION 6.2.46 Page 0 / Register 48: BIT READ/ WRITE RESET VALUE D7 R/W 0 INT1 Interrupt for Headset Insertion Event 0: Headset Insertion event will not generate a INT1 interrupt 1: Headset Insertion even will generate a INT1 interrupt D6 R/W 0 INT1 Interrupt for Button Press Event 0: Button Press event will not generate a INT1 interrupt 1: Button Press event will generate a INT1 interrupt D5 R/W 0 INT1 Interrupt for DAC DRC Signal Threshold 0: DAC DRC Signal Power exceeding Signal Threshold will not generate a INT1 interrupt 1: DAC DRC Signal Power exceeding Signal Threshold for either of Left or Right Channel will generate a INT1 interrupt. Read Page-0, Register-44 to distinguish between Left or Right Channel D4 R/W 0 INT1 Interrupt for AGC Noise Interrupt 0: Noise level detected by AGC will not generate a INT1 interrupt 1: Noise level detected by either off Left or Right Channel AGC will generate a INT1 interrupt. Read Page-0, Register-45 to distinguish between Left or Right Channel D3 R/W 0 INT1 Interrupt for Over Current Condition 0: Headphone Over Current condition will not generate a INT1 interrupt. 1: Headphone Over Current condition on either off Left or Right Channels will generate a INT1 interrupt. Read Page-0, Register-44 to distinguish between HPL and HPR D2 R/W 0 INT1 Interrupt for overflow event 0: ADC or DAC data overflows does not result in a INT1 interrupt 1: ADC or DAC data overflow will result in a INT1 interrupt. Read Page-0, Register-42 to distinguish between ADC or DAC data overflow D1 R/W 0 INT1 Interrupt for DC Measurement 0: DC Measurement data available will not generate INT1 interrupt 1: DC Measurement data available will generate INT1 interrupt D0 R/W 0 INT1 pulse control 0: INT1 is active high interrupt of 1 pulse of approx. 2ms duration 1: INT1 is active high interrupt of multiple pulses, each of duration 2ms. To stop the pulse train, read Page-0, Reg-42d, 44d or 45d DESCRIPTION 6.2.47 Page 0 / Register 49: 114 INT1 Interrupt Control Register INT2 Interrupt Control Register BIT READ/ WRITE RESET VALUE D7 R/W 0 INT2 Interrupt for Headset Insertion Event 0: Headset Insertion event will not generate a INT2 interrupt 1: Headset Insertion even will generate a INT2 interrupt D6 R/W 0 INT2 Interrupt for Button Press Event 0: Button Press event will not generate a INT2 interrupt 1: Button Press event will generate a INT2 interrupt D5 R/W 0 INT2 Interrupt for DAC DRC Signal Threshold 0: DAC DRC Signal Power exceeding Signal Threshold will not generate a INT2 interrupt 1: DAC DRC Signal Power exceeding Signal Threshold for either of Left or Right Channel will generate a INT2 interrupt. Read Page-0, Register-44 to distinguish between Left or Right Channel REGISTER MAP DESCRIPTION Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D4 R/W 0 INT2 Interrupt for AGC Noise Interrupt 0: Noise level detected by AGC will not generate a INT2 interrupt 1: Noise level detected by either off Left or Right Channel AGC will generate a INT2 interrupt. Read Page-0, Register-45 to distinguish between Left or Right Channel D3 R/W 0 INT2 Interrupt for Over Current Condition 0: Headphone Over Current condition will not generate a INT2 interrupt. 1: Headphone Over Current condition on either off Left or Right Channels will generate a INT2 interrupt. Read Page-0, Register-44 to distinguish between HPL and HPR D2 R/W 0 INT2 Interrupt for overflow event 0: ADC or DAC data overflows does not result in a INT1 interrupt 1: ADC or DAC data overflow will result in a INT1 interrupt. Read Page-0, Register-42 to distinguish between ADC or DAC data overflow D1 R/W 0 INT2 Interrupt for DC Measurement 0: DC Measurement data available will not generate INT2 interrupt 1: DC Measurement data available will generate INT2 interrupt D0 R/W 0 INT2 pulse control 0: INT2 is active high interrupt of 1 pulse of approx. 2ms duration 1: INT2 is active high interrupt of multiple pulses, each of duration 2ms. To stop the pulse train, read Page-0, Reg-42d, 44d and 45d DESCRIPTION 6.2.48 Page 0 / Register 50-51: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 DESCRIPTION Reserved. Write only default values 6.2.49 Page 0 / Register 52: BIT READ/ WRITE Reserved Register GPIO/MFP5 Control Register RESET VALUE DESCRIPTION D7-D6 R 00 D5-D2 R/W 0000 Reserved. Write only default values D1 R X GPIO Input Pin state, used along with GPIO as general purpose input D0 R/W 0 GPIO as general purpose output control 0: GPIO pin is driven to '0' in general purpose output mode 1: GPIO pin is driven to '1' in general purpose output mode GPIO Control 0000: GPIO input/output disabled. 0001: GPIO input is used for secondary audio interface, digital microphone input or clock input. Configure other registers to choose the functionality of GPIO input 0010: GPIO is general purpose input 0011: GPIO is general purpose output 0100: GPIO output is CLKOUT 0101: GPIO output is INT1 0110: GPIO output is INT2 0111: GPIO output is ADC_WCLK for Audio Interface 1000: GPIO output is secondary bit-clock for Audio Interface 1001: GPIO output is secondary word-clock for Audio Interface 1010: GPIO output is clock for digital microphone 1011-1111: Reserved. Do not use. 6.2.50 Page 0 / Register 53: READ/ WRITE RESET VALUE D7-D5 R 000 D4 R/W 1 BIT Submit Documentation Feedback DOUT/MFP2 Function Control Register DESCRIPTION Reserved. Write only default values DOUT Bus Keeper Control 0: DOUT Bus Keeper Enabled 1: DOUT Bus Keeper Disabled REGISTER MAP 115 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D3-D1 R/W 001 DOUT MUX Control 000: DOUT disabled 001: DOUT is Primary DOUT 010: DOUT is General Purpose Output 011: DOUT is CLKOUT 100: DOUT is INT1 101: DOUT is INT2 110: DOUT is Secondary BCLK 111: DOUT is Secondary WCLK D0 R/W 0 DOUT as General Purpose Output 0: DOUT General Purpose Output is '0' 1: DOUT General Purpose Output is '1' DESCRIPTION 6.2.51 Page 0 / Register 54: DIN/MFP1 Function Control Register BIT READ/ WRITE RESET VALUE D7-D3 R 0 0000 D2-D1 R/W 01 DIN function control 00: DIN pin is disabled 01: DIN is enabled for Primary Data Input or Digital Microphone Input or General Purpose Clock input 10: DIN is used as General Purpose Input 11: Reserved. Do not use D0 R X Value of DIN input pin. To be used when for General Purpose Input DESCRIPTION Reserved. Write only reserved values 6.2.52 Page 0 / Register 55: READ/ WRITE BIT MISO/MFP4 Function Control Register RESET VALUE DESCRIPTION D7-D5 R 000 Reserved. Write only default values D4-D1 R/W 0001 MISO function control 0000: MISO buffer disabled 0001: MISO is used for data output in SPI interface, is disabled for I2C interface 0010: MISO is General Purpose Output 0011: MISO is CLKOUT output 0100: MISO is INT1 output 0101: MISO is INT2 output 0110: MISO is ADC Word Clock output 0111: MISO is clock output for Digital Microphone 1000: MISO is Secondary Data Output for Audio Interface 1001: MISO is Secondary Bit Clock for Audio Interface 1010: MISO is Secondary Word Clock for Audio Interface 1011-1111: Reserved. Do not use D0 R/W 0 Value to be driven on MISO pin when used as General Purpose Output 6.2.53 Page 0 / Register 56: SCLK/MFP3 Function Control Register READ/ WRITE RESET VALUE D7-D3 R 0 0000 D2-D1 R/W 01 SCLK function control 00: SCLK pin is disabled 01: SCLK pin is enabled for SPI clock in SPI Interface mode or when in I2C Interface enabled for Secondary Data Input or Secondary Bit Clock Input or Secondary Word Clock or Secondary ADC Word Clock or Digital Microphone Input 10: SCLK is enabled as General Purpose Input 11: Reserved. Do not use D0 R X Value of SCLK input pin when used as General Purpose Input BIT 116 REGISTER MAP DESCRIPTION Reserved. Write only default values Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.54 Page 0 / Register 57-59: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 DESCRIPTION Reserved. Write only default values 6.2.55 Page 0 / Register 60: BIT READ/ WRITE R 000 D4-D0 R/W 0 0001 DESCRIPTION Reserved. Write only default values Selects the ADC (recording) signal processing block 0 0000: Reserved. Do not use 0 0001: DAC Signal Processing Block PRB_P1 0 0010: DAC Signal Processing Block PRB_P2 0 0011: DAC Signal Processing Block PRB_P3 0 0100: DAC Signal Processing Block PRB_P4 ... 1 1000: DAC Signal Processing Block PRB_P24 1 1001: DAC Signal Processing Block PRB_P25 1 1010-1 1111: Reserved. Do not use Note; Please check the overview section for description of the Signal Processing Modes 6.2.56 Page 0 / Register 61: READ/ WRITE DAC Signal Processing Block Control Register RESET VALUE D7-D5 BIT Reserved Registers ADC Signal Processing Block Control Register RESET VALUE D7-D5 R 000 D4-D0 R/W 0 0001 DESCRIPTION Reserved. Write only default values 0 0000: Reserved. Do not use 0 0001: ADC Singal Processing Block PRB_R1 0 0010: ADC Signal Processing Block PRB_R2 0 0011: ADC Signal Processing Block PRB_R3 0 0100: ADC Signal Processing Block PRB_R4 ... 1 0001: ADC Signal Processing Block PRB_R17 1 0010: ADC Signal Processing Block PRB_R18 1 0010-1 1111: Reserved. Do not use Note: Please check the overview section for description of the Signal Processing Modes 6.2.57 Page 0 / Register 62: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved Register DESCRIPTION Reserved. Write only default values 6.2.58 Page 0 / Register 63: DAC Channel Setup Register 1 BIT READ/ WRITE RESET VALUE D7 R/W 0 Left DAC Channel Power Control 0: Left DAC Channel Powered Down 1: Left DAC Channel Powered Up D6 R/W 0 Right DAC Channel Power Control 0: Right DAC Channel Powered Down 1: Right DAC Channel Powered Up D5-D4 R/W 01 Left DAC Data path Control 00: Left DAC data is disabled 01: Left DAC data Left Channel Audio Interface Data 10: Left DAC data is Right Channel Audio Interface Data 11: Left DAC data is Mono Mix of Left and Right Channel Audio Interface Data D3-D2 R/W 01 Right DAC Data path Control 00: Right DAC data is disabled 01: Right DAC data Right Channel Audio Interface Data 10: Right DAC data is Left Channel Audio Interface Data 11: Right DAC data is Mono Mix of Left and Right Channel Audio Interface Data Submit Documentation Feedback DESCRIPTION REGISTER MAP 117 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D1-D0 R/W 00 DESCRIPTION DAC Channel Volume Control's Soft-Step control 00: Soft-Stepping is 1 step per 1 DAC Word Clock 01: Soft-Stepping is 1 step per 2 DAC Word Clocks 10: Soft-Stepping is disabled 11: Reserved. Do not use 6.2.59 Page 0 / Register 64: BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D4 R/W 000 DAC Channel Setup Register 2 DESCRIPTION Right Modulator Output Control 0: When Right DAC Channel is powered down, the data is zero. 1: When Right DAC Channel is powered down, the Right DAC Modulator output data is inverted version of Left DAC Modulator Output. Can be used when differential mono output is used DAC Auto Mute Control 000: Auto Mute disabled 001: DAC is auto muted if 010: DAC is auto muted if 011: DAC is auto muted if 100: DAC is auto muted if 101: DAC is auto muted if 110: DAC is auto muted if 111: DAC is auto muted if input data input data input data input data input data input data input data is is is is is is is DC for DC for DC for DC for DC for DC for DC for more more more more more more more than than than than than than than 100 consecutive inputs 200 consecutive inputs 400 consecutive inputs 800 consecutive inputs 1600 consecutive inputs 3200 consecutive inputs 6400 consecutive inputs D3 R/W 1 Left DAC Channel Mute Control 0: Left DAC Channel not muted 1: Left DAC Channel muted D2 R/W 1 Right DAC Channel Mute Control 0: Right DAC Channel not muted 1: Right DAC Channel muted D1-D0 R/W 00 DAC Master Volume Control 00: Left and Right Channel have independent volume control 01: Left Channel Volume is controlled by Right Channel Volume Control setting 10: Right Channel Volume is controlled by Left Channel Volume Control setting 11: Reserved. Do not use 6.2.60 Page 0 / Register 65: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 118 REGISTER MAP Left DAC Channel Digital Volume Control Register DESCRIPTION Left DAC Channel Digital Volume Control Setting 0111 1111-0011 0001: Reserved. Do not use 0011 0000: Digital Volume Control = +24dB 0010 1111: Digital Volume Control = +23.5dB ... 0000 0001: Digital Volume Control = +0.5dB 0000 0000: Digital Volume Control = 0.0dB 1111 1111: Digital Volume Control = -0.5dB ... 1000 0010: Digital Volume Control = -63dB 1000 0001: Digital Volume Control = -63.5dB 1000 0000: Reserved. Do not use Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.61 Page 0 / Register 66: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 Right DAC Channel Digital Volume Control Register DESCRIPTION Right DAC Channel Digital Volume Control Setting 0111 1111-0011 0001: Reserved. Do not use 0011 0000: Digital Volume Control = +24dB 0010 1111: Digital Volume Control = +23.5dB ... 0000 0001: Digital Volume Control = +0.5dB 0000 0000: Digital Volume Control = 0.0dB 1111 1111: Digital Volume Control = -0.5dB ... 1000 0010: Digital Volume Control = -63dB 1000 0001: Digital Volume Control = -63.5dB 1000 0000: Reserved. Do not use 6.2.62 Page 0 / Register 67: Headset Detection Configuration Register BIT READ/ WRITE RESET VALUE D7 R/W 0 0: Headset Detection Disabled 1: Headset Detection Enabled D6-D5 R 00 Headset Type Flag 00: Headset not detected 01: Stereo Headset detected 10: Reserved 11: Stereo + Cellular Headset detected D4-D2 R/W 000 Headset Detection Debounce Programmability 000: Debounce Time = 16ms 001: Debounce Time = 32ms 010: Debounce Time = 64ms 011: Debounce Time = 128ms 100: Debounce Time = 256ms 101: Debounce Time = 512ms 110-111: Reserved. Do not use Note: All times are typical values D1-D0 R/W 00 Headset Button Press Debounce Programmability 00: Debounce disabled 01: Debounce Time = 8ms 10: Debounce Time = 16ms 11: Debounce Time = 32ms Note: All times are typical values DESCRIPTION 6.2.63 Page 0 / Register 68: DRC Control Register 1 READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value D6 R/W 0 DRC Enable Control 0: Left Channel DRC disabled 1: Left Channel DRC enabled D5 R/W 0 DRC Enable Control 0: Right Channel DRC disabled 1: Right Channel DRC enabled D4-D2 R/W 011 DRC Threshold control 000: DRC Threshold = -3dBFS 001: DRC Threshold = -6dBFS 010: DRC Threshold = -9dBFS 011: DRC Threshold = -12dBFS 100: DRC Threshold = -15dBFS 101: DRC Threshold = -18dBFS 110: DRC Threshold = -21dBFS 111: DRC Threshold = -24dBFS BIT Submit Documentation Feedback DESCRIPTION REGISTER MAP 119 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D1-D0 R/W 11 DESCRIPTION DRC Hysteresis Control 00: DRC Hysteresis = 0dB 01: DRC Hysteresis = 1dB 10: DRC Hysteresis = 2dB 11: DRC Hysteresis = 3dB 6.2.64 Page 0 / Register 69: READ/ WRITE BIT DRC Control Register 2 RESET VALUE DESCRIPTION D7 R 0 D6-D3 R/W 0111 Reserved. Write only default value. DRC Hold Programmability 0000: DRC Hold Disabled 0001: DRC Hold Time = 32 DAC Word Clocks 0010: DRC Hold Time = 64 DAC Word Clocks 0011: DRC Hold Time = 128 DAC Word Clocks 0100: DRC Hold Time = 256 DAC Word Clocks 0101: DRC Hold Time = 512 DAC Word Clocks ... 1110: DRC Hold Time = 4*32768 DAC Word Clocks 1111: DRC Hold Time = 5*32768 DAC Word Clocks D2-D0 R/W 000 Reserved. Write only default values 6.2.65 Page 0 / Register 70: DRC Control Register 3 BIT READ/ WRITE RESET VALUE D7-D4 R/W 0000 DRC Attack Rate control 0000: DRC Attack Rate = 4.0dB per DAC Word Clock 0001: DRC Attack Rate = 2.0dB per DAC Word Clock 0010: DRC Attack Rae = 1.0dB per DAC Word Clock ... 1110: DRC Attack Rate = 2.4414e-4dB per DAC Word Clock 1111: DRC Attack Rate = 1.2207e-4dB per DAC Word Clock D3-D0 R/W 0000 DRC Decay Rate control 0000: DRC Decay Rate = 1.5625e-2dB per DAC Word Clock 0001: DRC Decay Rate = 7.8125e-3dB per DAC Word Clock 0010: DRC Decay Rae = 3.9062e-3dB per DAC Word Clock ... 1110: DRC Decay Rate = 9.5367e-7dB per DAC Word Clock 1111: DRC Decay Rate = 4.7683e-7dB per DAC Word Clock DESCRIPTION 6.2.66 Page 0 / Register 71: BIT READ/ WRITE RESET VALUE D7 R/W 0 0: Beep Generator Disabled 1: Beep Generator Enabled. This bit will self clear after the beep has been generated. Reserved. Write only default value D6 R 0 D5-D0 R/W 00 0000 120 Beep Generator Register 1 REGISTER MAP DESCRIPTION Left Channel Beep Volume Control 00 0000: Left Channel Beep Volume 00 0001: Left Channel Beep Volume ... 11 1110: Left Channel Beep Volume 11 1111: Left Channel Beep Volume = 0dB = -1dB = -62dB = -63dB Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.67 Page 0 / Register 72: BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 D5-D0 R 00 0000 DESCRIPTION Beep Generator Master Volume Control Setting 00: Left and Right Channels have independent Volume Settings 01: Left Channel Beep Volume is the same as programmed for Right Channel 10: Right Channel Beep Volume is the same as programmed for Left Channel 11: Reserved. Do not use Right Channel Beep Volume Control 00 0000: Right Channel Beep Volume = 00 0001: Right Channel Beep Volume = ... 11 1110: Right Channel Beep Volume = 11 1111: Right Channel Beep Volume = 6.2.68 Page 0 / Register 73: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 READ/ WRITE RESET VALUE D7-D0 R/W 1110 1110 READ/ WRITE RESET VALUE D7-D0 R/W 0001 0000 READ/ WRITE RESET VALUE D7-D0 R/W 1101 1000 BIT RESET VALUE D7-D0 R/W 0111 1110 Programmed value is Beep Sample Length(7:0) READ/ WRITE RESET VALUE D7-D0 R/W 1110 0011 Submit Documentation Feedback Beep Generator Register 6 DESCRIPTION Programmed Value is Beep Sin(x)(15:8), where Sin(x) = sin(2*pi*Fin/Fs), where Fin is desired beep frequency and Fs is DAC sample rate Beep Generator Register 7 DESCRIPTION Programmed Value is Beep Sin(x)(7:0), where Sin(x) = sin(2*pi*Fin/Fs), where Fin is desired beep frequency and Fs is DAC sample rate Beep Generator Register 8 DESCRIPTION Programmed Value is Beep Cos(x)(15:8), where Cos(x) = cos(2*pi*Fin/Fs), where Fin is desired beep frequency and Fs is DAC sample rate 6.2.74 Page 0 / Register 79: BIT Beep Generator Register 5 DESCRIPTION 6.2.73 Page 0 / Register 78: READ/ WRITE Beep Generator Register 4 Programmed value is Beep Sample Length(15:8) 6.2.72 Page 0 / Register 77: BIT Beep Generator Register 3 DESCRIPTION 6.2.71 Page 0 / Register 76: BIT -62dB -63dB Programmed value is Beep Sample Length(23:16) 6.2.70 Page 0 / Register 75: BIT 0dB -1dB DESCRIPTION 6.2.69 Page 0 / Register 74: BIT Beep Generator Register 2 Beep Generator Register 9 DESCRIPTION Programmed Value is Beep Cos(x)(7:0), where Cos(x) = cos(2*p*Fin/Fs), where Fin is desired beep frequency and Fs is DAC sample rate REGISTER MAP 121 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.75 Page 0 / Register 80: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 www.ti.com Reserved Register DESCRIPTION Reserved. Write only default values 6.2.76 Page 0 / Register 81: ADC Channel Setup Register BIT READ/ WRITE RESET VALUE D7 R/W 0 Left Channel ADC Power Control 0: Left Channel ADC is powered down 1: Left Channel ADC is powered up D6 R/W 0 Right Channel ADC Power Control 0: Right Channel ADC is powered down 1: Right Channel ADC is powered up D5-D4 R/W 00 Digital Microphone Input Configuration 00: GPIO serves as Digital Microphone Input 01: SCLK serves as Digital Microphone Input 10: DIN serves as Digital Microphone Input 11: Reserved. Do not use D3 R/W 0 Left Channel Digital Microphone Power Control 0: Left Channel ADC not configured for Digital Microphone 1: Left Channel ADC configured for Digital Microphone D2 R/W 0 Right Channel Digital Microphone Power Control 0: Right Channel ADC not configured for Digital Microphone 1: Right Channel ADC configured for Digital Microphone D1-D0 R/W 00 ADC Volume Control Soft-Stepping Control 00: ADC Volume Control changes by 1 gain step per ADC Word Clock 01: ADC Volume Control changes by 1 gain step per two ADC Word Clocks 10: ADC Volume Control Soft-Stepping disabled 11: Reserved. Do not use DESCRIPTION 6.2.77 Page 0 / Register 82: BIT READ/ WRITE RESET VALUE D7 R/W 1 D6-D4 R/W 000 D3 R/W 1 D2-D0 R/W 000 DESCRIPTION Left ADC Channel Mute Control 0: Left ADC Channel Un-muted 1: Left ADC Channel Muted Left ADC Channel Fine Gain Adjust 000: Left ADC Channel Fine Gain = 0dB 001: Left ADC Channel Fine Gain = -0.1dB 010: Left ADC Channel Fine Gain = -0.2dB 011: Left ADC Channel Fine Gain = -0.3dB 100: Left ADC Channel Fine Gain = -0.4dB 101-111: Reserved. Do not use Right ADC Channel Mute Control 0: Right ADC Channel Un-muted 1: Right ADC Channel Muted Right ADC Channel Fine Gain Adjust 000: Right ADC Channel Fine Gain = 0dB 001: Right ADC Channel Fine Gain = -0.1dB 010: Right ADC Channel Fine Gain = -0.2dB 011: Right ADC Channel Fine Gain = -0.3dB 100: Right ADC Channel Fine Gain = -0.4dB 101-111: Reserved. Do not use 6.2.78 Page 0 / Register 83: 122 BIT READ/ WRITE RESET VALUE D7 R 0 REGISTER MAP ADC Fine Gain Adjust Register Left ADC Channel Volume Control Register DESCRIPTION Reserved. Write only default values Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D6-D0 R/W 000 0000 DESCRIPTION Left ADC Channel Volume Control 100 0000-110 1000: Reserved. Do not use 110 0111: Left ADC Channel Volume = -12dB 110 0110: Left ADC Channel Volume = -11.5dB 110 0101: Left ADC Channel Volume = -11.0dB ... 111 1111: Left ADC Channel Volume = -0.5dB 000 0000: Left ADC Channel Volume = 0.0dB 000 0001: Left ADC Channel Volume = 0.5dB ... 010 0110: Left ADC Channel Volume = 19.0dB 010 0111: Left ADC Channel Volume = 19.5dB 010 1000: Left ADC Channel Volume = 20.0dB 010 1001-011 1111: Reserved. Do not use 6.2.79 Page 0 / Register 84: BIT READ/ WRITE Right ADC Channel Volume Control Register RESET VALUE D7 R 0 D6-D0 R/W 000 0000 DESCRIPTION Reserved. Write only default values Right ADC Channel Volume Control 100 0000-110 1000: Reserved. Do not use 110 0111: Right ADC Channel Volume = -12dB 110 0110: Right ADC Channel Volume = -11.5dB 110 0101: Right ADC Channel Volume = -11.0dB ... 111 1111: Right ADC Channel Volume = -0.5dB 000 0000: Right ADC Channel Volume = 0.0dB 000 0001: Right ADC Channel Volume = 0.5dB ... 010 0110: Right ADC Channel Volume = 19.0dB 010 0111: Right ADC Channel Volume = 19.5dB 010 1000: Right ADC Channel Volume = 20.0dB 010 1001-011 1111: Reserved. Do not use 6.2.80 Page 0 / Register 85: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 ADC Phase Adjust Register DESCRIPTION ADC Phase Compensation Control 1000 0000-1111 1111: Left ADC Channel Data is delayed with respect to Right ADC Channel Data. For details of delayed amount please refer to the description of Phase Compensation in the Overview section. 0000 0000: Left and Right ADC Channel data are not delayed with respect to each other 0000 0001-0111 1111: Right ADC Channel Data is delayed with respect to Left ADC Channel Data. For details of delayed amount please refer to the description of Phase Compensation in the Overview section. 6.2.81 Page 0 / Register 86: Left Channel AGC Control Register 1 BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D4 R/W 000 Left Channel AGC Target Level Setting 000: Left Channel AGC Target Level = -5.5dBFS 001: Left Channel AGC Target Level = -8.0dBFS 010: Left Channel AGC Target Level = -10.0dBFS 011: Left Channel AGC Target Level = -12.0dBFS 100: Left Channel AGC Target Level = -14.0dBFS 101: Left Channel AGC Target Level = -17.0dBFS 110: Left Channel AGC Target Level = -20.0dBFS 111: Left Channel AGC Target Level = -24.0dBFS D3-D2 R 00 Reserved. Write only default values Submit Documentation Feedback DESCRIPTION 0: Left Channel AGC Disabled 1: Left Channel AGC Enabled REGISTER MAP 123 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D1-D0 R/W 00 DESCRIPTION Left Channel AGC Gain Hysteresis Control 00: Left Channel AGC Gain Hysteresis is disabled 01: Left Channel AGC Gain Hysteresis is 0.5dB 10: Left Channel AGC Gain Hysteresis is 1.0dB 11: Left Channel AGC Gain Hysteresis is 1.5dB 6.2.82 Page 0 / Register 87: BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 D5-D1 R/W 0 0000 D0 R 0 DESCRIPTION Left Channel AGC Hysteresis Setting 00: Left Channel AGC Hysteresis is 1.0dB 01: Left Channel AGC Hysteresis is 2.0dB 10: Left Channel AGC Hysteresis is 4.0dB 11: Left Channel AGC Hysteresis is disabled Left Channel AGC Noise Threshold 0 0000: Left Channel AGC Noise Gate disabled 0 0001: Left Channel AGC Noise Threshold is -30dB 0 0010: Left Channel AGC Noise Threshold is -32dB 0 0011: Left Channel AGC Noise Threshold is -34dB ... 1 1101: Left Channel AGC Noise Threshold is -86dB 1 1110: Left Channel AGC Noise Threshold is -88dB 1 1111: Left Channel AGC Noise Threshold is -90dB Reserved. Write only default value 6.2.83 Page 0 / Register 88: READ/ WRITE BIT D7 R 0 R/W 111 1111 DESCRIPTION Reserved. Write only default value Left Channel AGC Maximum Gain Setting 000 0000: Left Channel AGC Maximum Gain = 0.0dB 000 0001: Left Channel AGC Maximum Gain = 0.5dB 000 0010: Left Channel AGC Maximum Gain = 1.0dB ... 111 0011: Left Channel AGC Maximum Gain = 57.5dB 111 0100-111 1111: Left Channel AGC Maximum Gain = 58.0dB 6.2.84 Page 0 / Register 89: BIT READ/ WRITE RESET VALUE D7-D3 R/W 0 0000 124 R/W REGISTER MAP Left Channel AGC Control Register 3 RESET VALUE D6-D0 D2-D0 Left Channel AGC Control Register 2 000 Left Channel AGC Control Register 4 DESCRIPTION Left Channel AGC Attack Time Setting 0 0000: Left Channel AGC Attack Time 0 0001: Left Channel AGC Attack Time 0 0010: Left Channel AGC Attack Time ... 1 1101: Left Channel AGC Attack Time 1 1110: Left Channel AGC Attack Time 1 1111: Left Channel AGC Attack Time = 1*32 ADC Word Clocks = 3*32 ADC Word Clocks = 5*32 ADC Word Clocks = 59*32 ADC Word Clocks = 61*32 ADC Word Clocks = 63*32 ADC Word Clocks Left Channel AGC Attack Time Scale Factor Setting 000: Scale Factor = 1 001: Scale Factor = 2 010: Scale Factor = 4 ... 101: Scale Factor = 32 110: Scale Factor = 64 111: Scale Factor = 128 Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.85 Page 0 / Register 90: BIT READ/ WRITE RESET VALUE D7-D3 R/W 0 0000 D2-D0 R/W 000 DESCRIPTION Left Channel AGC Decay Time Setting 0 0000: Left Channel AGC Decay Time 0 0001: Left Channel AGC Decay Time 0 0010: Left Channel AGC Decay Time ... 1 1101: Left Channel AGC Decay Time 1 1110: Left Channel AGC Decay Time 1 1111: Left Channel AGC Decay Time READ/ WRITE RESET VALUE D7-D5 R 000 D4-D0 R/W 0 0000 = 1*512 ADC Word Clocks = 3*512 ADC Word Clocks = 5*512 ADC Word Clocks = 59*512 ADC Word Clocks = 61*512 ADC Word Clocks = 63*512 ADC Word Clocks Left Channel AGC Decay Time Scale Factor Setting 000: Scale Factor = 1 001: Scale Factor = 2 010: Scale Factor = 4 ... 101: Scale Factor = 32 110: Scale Factor = 64 111: Scale Factor = 128 6.2.86 Page 0 / Register 91: BIT Left Channel AGC Control Register 5 Left Channel AGC Control Register 6 DESCRIPTION Reserved. Write only default values Left Channel AGC Noise Debounce Time Setting 0 0001: Left Channel AGC Noise Debounce Time 0 0010: Left Channel AGC Noise Debounce Time 0 0011: Left Channel AGC Noise Debounce Time ... 0 1010: Left Channel AGC Noise Debounce Time 0 1011: Left Channel AGC Noise Debounce Time 0 1100: Left Channel AGC Noise Debounce Time 0 1101: Left Channel AGC Noise Debounce Time ... 1 1101: Left Channel AGC Noise Debounce Time 1 1110: Left Channel AGC Noise Debounce Time 1 1111: Left Channel AGC Noise Debounce Time 6.2.87 Page 0 / Register 92: RESET VALUE D7-D4 R 0000 Reserved. Write only default values D3-D0 R/W 0000 Left Channel AGC Signal Debounce Time Setting 0001: Left Channel AGC Signal Debounce Time = 0010: Left Channel AGC Signal Debounce Time = 0011: Left Channel AGC Signal Debounce Time = ... 1001: Left Channel AGC Signal Debounce Time = 1010: Left Channel AGC Signal Debounce Time = 1011: Left Channel AGC Signal Debounce Time = 1100: Left Channel AGC Signal Debounce Time = 1101: Left Channel AGC Signal Debounce Time = 1110: Left Channel AGC Signal Debounce Time = 1111: Left Channel AGC Signal Debounce Time = Submit Documentation Feedback = = = = 2048 ADC Word Clocks 4096 ADC Word Clocks 2*4096 ADC Word Clocks 3*4096 ADC Word Clocks = 19*4096 ADC Word Clocks = 20*4096 ADC Word Clocks = 21*4096 ADC Word Clocks Left Channel AGC Control Register 7 READ/ WRITE BIT =0 = 4 ADC Word Clocks = 8 ADC Word Clocks DESCRIPTION 0 4 ADC Word Clocks 8 ADC Word Clocks 1024 ADC Word Clocks 2048 ADC Word Clocks 2*2048 ADC Word Clocks 3*2048 ADC Word Clocks 4*2048 ADC Word Clocks 5*2048 ADC Word Clocks 6*2048 ADC Word Clocks REGISTER MAP 125 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.88 Page 0 / Register 93: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 www.ti.com Left Channel AGC Control Register 8 DESCRIPTION Left Channel AGC Gain Flag 1111 0100: Left Channel AGC Gain 1111 0101: Left Channel AGC Gain 1111 0110: Left Channel AGC Gain ... 0000 0000: Left Channel AGC Gain ... 0111 0010: Left Channel AGC Gain 0111 0011: Left Channel AGC Gain 0111 0100: Left Channel AGC Gain 6.2.89 Page 0 / Register 94: = -12.0dB = -11.5dB = -11.0dB = 0.0dB = 57.0dB = 57.5dB = 58.0dB Right Channel AGC Control Register 1 BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D4 R/W 000 Right Channel AGC Target Level Setting 000: Right Channel AGC Target Level = -5.5dBFS 001: Right Channel AGC Target Level = -8.0dBFS 010: Right Channel AGC Target Level = -10.0dBFS 011: Right Channel AGC Target Level = -12.0dBFS 100: Right Channel AGC Target Level = -14.0dBFS 101: Right Channel AGC Target Level = -17.0dBFS 110: Right Channel AGC Target Level = -20.0dBFS 111: Right Channel AGC Target Level = -24.0dBFS D3-D2 R 00 Reserved. Write only default values D1-D0 R/W 00 Right Channel AGC Gain Hysteresis Control 00: Right Channel AGC Gain Hysteresis is disabled 01: Right Channel AGC Gain Hysteresis is 0.5dB 10: Right Channel AGC Gain Hysteresis is 1.0dB 11: Right Channel AGC Gain Hysteresis is 1.5dB DESCRIPTION 0: Right Channel AGC Disabled 1: Right Channel AGC Enabled 6.2.90 Page 0 / Register 95: BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 D5-D1 R/W 0 0000 D0 R 0 DESCRIPTION Right Channel AGC Hysteresis Setting 00: Right Channel AGC Hysteresis is 1.0dB 01: Right Channel AGC Hysteresis is 2.0dB 10: Right Channel AGC Hysteresis is 4.0dB 11: Right Channel AGC Hysteresis is disabled Right Channel AGC Noise Threshold 0 0000: Right Channel AGC Noise Gate disabled 0 0001: Right Channel AGC Noise Threshold is -30dB 0 0010: Right Channel AGC Noise Threshold is -32dB 0 0011: Right Channel AGC Noise Threshold is -34dB ... 1 1101: Right Channel AGC Noise Threshold is -86dB 1 1110: Right Channel AGC Noise Threshold is -88dB 1 1111: Right Channel AGC Noise Threshold is -90dB Reserved. Write only default value 6.2.91 Page 0 / Register 96: 126 BIT READ/ WRITE RESET VALUE D7 R 0 REGISTER MAP Right Channel AGC Control Register 2 Right Channel AGC Control Register 3 DESCRIPTION Reserved. Write only default value Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D6-D0 R/W 111 1111 DESCRIPTION Right Channel AGC Maximum Gain Setting 000 0000: Right Channel AGC Maximum Gain = 0.0dB 000 0001: Right Channel AGC Maximum Gain = 0.5dB 000 0010: Right Channel AGC Maximum Gain = 1.0dB ... 111 0011: Right Channel AGC Maximum Gain = 57.5dB 111 0100-111 1111: Right Channel AGC Maximum Gain = 58.0dB 6.2.92 Page 0 / Register 97: BIT READ/ WRITE RESET VALUE D7-D3 R/W 0 0000 D2-D0 R/W 000 DESCRIPTION Right Channel AGC Attack Time Setting 0 0000: Right Channel AGC Attack Time 0 0001: Right Channel AGC Attack Time 0 0010: Right Channel AGC Attack Time ... 1 1101: Right Channel AGC Attack Time 1 1110: Right Channel AGC Attack Time 1 1111: Right Channel AGC Attack Time READ/ WRITE RESET VALUE D7-D3 R/W 0 0000 D2-D0 R/W 000 READ/ WRITE RESET VALUE D7-D5 R 000 Submit Documentation Feedback = 59*32 ADC Word Clocks = 61*32 ADC Word Clocks = 63*32 ADC Word Clocks Right Channel AGC Control Register 5 DESCRIPTION Right Channel AGC Decay Time Setting 0 0000: Right Channel AGC Decay Time 0 0001: Right Channel AGC Decay Time 0 0010: Right Channel AGC Decay Time ... 1 1101: Right Channel AGC Decay Time 1 1110: Right Channel AGC Decay Time 1 1111: Right Channel AGC Decay Time = 1*512 ADC Word Clocks = 3*512 ADC Word Clocks = 5*512 ADC Word Clocks = 59*512 ADC Word Clocks = 61*512 ADC Word Clocks = 63*512 ADC Word Clocks Right Channel AGC Decay Time Scale Factor Setting 000: Scale Factor = 1 001: Scale Factor = 2 010: Scale Factor = 4 ... 101: Scale Factor = 32 110: Scale Factor = 64 111: Scale Factor = 128 6.2.94 Page 0 / Register 99: BIT = 1*32 ADC Word Clocks = 3*32 ADC Word Clocks = 5*32 ADC Word Clocks Right Channel AGC Attack Time Scale Factor Setting 000: Scale Factor = 1 001: Scale Factor = 2 010: Scale Factor = 4 ... 101: Scale Factor = 32 110: Scale Factor = 64 111: Scale Factor = 128 6.2.93 Page 0 / Register 98: BIT Right Channel AGC Control Register 4 Right Channel AGC Control Register 6 DESCRIPTION Reserved. Write only default values REGISTER MAP 127 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D4-D0 R/W 0 0000 DESCRIPTION Right Channel AGC Noise Debounce Time Setting 0 0001: Right Channel AGC Noise Debounce Time 0 0010: Right Channel AGC Noise Debounce Time 0 0011: Right Channel AGC Noise Debounce Time ... 0 1010: Right Channel AGC Noise Debounce Time 0 1011: Right Channel AGC Noise Debounce Time 0 1100: Right Channel AGC Noise Debounce Time 0 1101: Right Channel AGC Noise Debounce Time ... 1 1101: Right Channel AGC Noise Debounce Time 1 1110: Right Channel AGC Noise Debounce Time 1 1111: Right Channel AGC Noise Debounce Time 6.2.95 Page 0 / Register 100: RESET VALUE D7-D4 R 0000 Reserved. Write only default values D3-D0 R/W 0000 Right Channel AGC Signal Debounce Time Setting 0001: Right Channel AGC Signal Debounce Time = 0010: Right Channel AGC Signal Debounce Time = 0011: Right Channel AGC Signal Debounce Time = ... 1001: Right Channel AGC Signal Debounce Time = 1010: Right Channel AGC Signal Debounce Time = 1011: Right Channel AGC Signal Debounce Time = 1100: Right Channel AGC Signal Debounce Time = 1101: Right Channel AGC Signal Debounce Time = 1110: Right Channel AGC Signal Debounce Time = 1111: Right Channel AGC Signal Debounce Time = READ/ WRITE RESET VALUE D7-D0 R 0000 0000 0 4 ADC Word Clocks 8 ADC Word Clocks 1024 ADC Word Clocks 2048 ADC Word Clocks 2*2048 ADC Word Clocks 3*2048 ADC Word Clocks 4*2048 ADC Word Clocks 5*2048 ADC Word Clocks 6*2048 ADC Word Clocks Right Channel AGC Control Register 8 DESCRIPTION Right Channel AGC Gain Flag 1111 0100: Right Channel AGC 1111 0101: Right Channel AGC 1111 0110: Right Channel AGC ... 0000 0000: Right Channel AGC ... 0111 0010: Right Channel AGC 0111 0011: Right Channel AGC 0111 0100: Right Channel AGC 6.2.97 Page 0 / Register 102: 128 = 19*4096 ADC Word Clocks = 20*4096 ADC Word Clocks = 21*4096 ADC Word Clocks DESCRIPTION 6.2.96 Page 0 / Register 101: BIT = 2048 ADC Word Clocks = 4096 ADC Word Clocks = 2*4096 ADC Word Clocks = 3*4096 ADC Word Clocks Right Channel AGC Control Register 7 READ/ WRITE BIT =0 = 4 ADC Word Clocks = 8 ADC Word Clocks Gain = -12.0dB Gain = -11.5dB Gain = -11.0dB Gain = 0.0dB Gain = 57.0dB Gain = 57.5dB Gain = 58.0dB DC Measurement Register 1 BIT READ/ WRITE RESET VALUE D7 R/W 0 0: DC Measurement Mode disabled for Left ADC Channel 1: DC Measurement Mode enabled for Left ADC Channel D6 R/W 0 0: DC Measurement Mode disabled for Right ADC Channel 1: DC Measurement Mode enabled for Right ADC Channel D5 R/W 0 0: DC Measurement is done using 1st order moving average filter with averaging of 2^D 1: DC Measurement is done with 1sr order Low-pass IIR filter with coefficients as a function of D REGISTER MAP DESCRIPTION Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D4-D0 R/W 0 0000 DESCRIPTION DC Measurement D setting 0 0000: Reserved. Do not use 0 0001: DC Measurement D parameter 0 0010: DC Measurement D parameter .. 1 0011: DC Measurement D parameter 1 0100: DC Measurement D parameter 1 0101-1 1111: Reserved. Do not use 6.2.98 Page 0 / Register 103: =1 =2 = 19 = 20 DC Measurement Register 2 BIT READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default values D6 R/W 0 0: Left and Right Channel DC measurement result update enabled 1: Left and Right Channel DC measurement result update disabled i.e. new results will be updated while old results are being read D5 R/W 0 0: For IIR based DC measurement, measurement value is the instantaneous output of IIR filter 1: For IIR based DC measurement, the measurement value is updated before periodic clearing of IIR filter D4-D0 R/W 0 0000 DESCRIPTION IIR based DC Measurement, averaging time setting 0 0000: Infinite average is used 0 0001: Averaging time is 2^1 ADC Modulator clocks 0 0010: Averaging time is 2^2 ADC Modulator clocks ... 1 0011: Averaging time is 2^19 ADC Modulator clocks 1 0100: Averaging time is 2^20 ADC Modulator clocks 1 0101-1 1111: Reserved. Do not use 6.2.99 Page 0 / Register 104: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 DESCRIPTION Left Channel DC Measurement Output (23:16) 6.2.100 Page 0 / Register 105: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Left Channel DC Measurement Output (15:8) READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Left Channel DC Measurement Output (7:0) READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Submit Documentation Feedback Right Channel DC Measurement Output Register 1 DESCRIPTION Right Channel DC Measurement Output (23:16) 6.2.103 Page 0 / Register 108: BIT Left Channel DC Measurement Output Register 3 DESCRIPTION 6.2.102 Page 0 / Register 107: BIT Left Channel DC Measurement Output Register 2 DESCRIPTION 6.2.101 Page 0 / Register 106: BIT Left Channel DC Measurement Output Register 1 Right Channel DC Measurement Output Register 2 DESCRIPTION Right Channel DC Measurement Output (15:8) REGISTER MAP 129 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.104 Page 0 / Register 109: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Right Channel DC Measurement Output Register 3 DESCRIPTION Right Channel DC Measurement Output (7:0) 6.2.105 Page 0 / Register 110-127: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 BIT RESET VALUE D7-D0 R/W 0000 0000 Reserved. Write only default values READ/ WRITE RESET VALUE D7-D4 R 0000 D3 R/W 0 D2-D0 R 000 Page Select Register DESCRIPTION Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. 6.2.107 Page 1 / Register 1: BIT Reserved Register DESCRIPTION 6.2.106 Page 1 / Register 0: READ/ WRITE www.ti.com Power Configuration Register DESCRIPTION Reserved. Write only default values 0: AVDD will be weakly connected to DVDD. Use when DVDD is powered, but AVDD LDO is powered down and AVDD is not externally powered 1: Disabled weak connection of AVDD with DVDD Reserved. Write only default values 6.2.108 Page 1 / Register 2: LDO Control Register BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 DVDD LDO Control 00: DVDD LDO output is nominally 1.72V 01: DVDD LDO output is nominally 1.67V 10: DVDD LDO output is nominally 1.77V 11: Do not use D5-D4 R/W 00 AVDD LDO Control 00: AVDD LDO output is nominally 1.72V 01: AVDD LDO output is nominally 1.67V 10: AVDD LDO output is nominally 1.77V 11: Do not use D3 R/W 1 Analog Block Power Control 0: Analog Blocks Enabled 1: Analog Blocks Disabled D2 R 0 DVDD LDO Over Current Detect 0: Over Current not detected for DVDD LDO 1: Over Current detected for DVDD LDO D1 R 0 AVDD LDO Over Current Detect 0: Over Current not detected for AVDD LDO 1: Over Current detected for AVDD LDO D0 R/W 0 AVDD LDO Power Control 0: AVDD LDO Powered down 1: AVDD LDO Powered up 130 REGISTER MAP DESCRIPTION Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.109 Page 1 / Register 3: Playback Configuration Register 1 BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 00: Left DAC routing to HPL uses Class-AB driver 01-10: Reserved. Do not use 11: Left DAC routing to HPL uses Class-D driver Reserved. Write only default value DESCRIPTION D5 R 0 D4-D2 R/W 000 Left DAC PTM Control 000: Left DAC in mode PTM_P3, PTM_P4 001: Left DAC in mode PTM_P2 010: Left DAC in mode PTM_P1 011-111: Reserved. Do not use D1-D0 R 00 Reserved. Write only default value 6.2.110 Page 1 / Register 4: Playback Configuration Register 2 BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 00: Right DAC routing to HPL uses Class-AB driver 01-10: Reserved. Do not use 11: Right DAC routing to HPL uses Class-D driver Reserved. Write only default value DESCRIPTION D5 R 0 D4-D2 R/W 000 Right DAC PTM Control 000: Right DAC in mode PTM_P3, PTM_P4 001: Right DAC in mode PTM_P2 010: Right DAC in mode PTM_P1 011-111: Reserved. Do not use D1-D0 R 00 Reserved. Write only default value 6.2.111 Page 1 / Register 5-8: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved Register DESCRIPTION Reserved. Write only default values 6.2.112 Page 1 / Register 9: Output Driver Power Control Register READ/ WRITE RESET VALUE D7-D6 R 00 Reserved. Write only default value D5 R/W 0 0: HPL is powered down 1: HPL is powered up D4 R/W 0 0: HPR is powered down 1: HPR is powered up D3 R/W 0 0: LOL is powered down 1: LOL is powered up D2 R/W 0 0: LOR is powered down 1: LOR is powered up D1 R/W 0 0: Left Mixer Amplifier(MAL) is powered down 1: Left Mixer Amplifier(MAL) is powered up D0 R/W 0 0: Right Mixer Amplifier(MAR) is powered down 1: Right Mixer Amplifier(MAR) is powered up BIT DESCRIPTION 6.2.113 Page 1 / Register 10: Common Mode Control Register READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value. D6 R/W 0 0: Full Chip Common Mode is 0.9V 1: Full Chip Common Mode is 0.75V BIT Submit Documentation Feedback DESCRIPTION REGISTER MAP 131 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D5-D4 R/W 00 00: 01: 10: 11: D3 R/W 0 0: Output Common Mode for LOL & LOR is same as full-chip common mode 1: Output Common Mode for LOL & LOR is 1.65V and output is powered by LDOIN D2 R 0 Reserved. Write only default value D1 R/W 0 0: Output of HPL & HPR is powered with AVDD supply 1: Output of HPL & HPR is powered with LDOIN supply D0 R/W 0 0: When Page-1, Reg-10, D1=1, then LDOIN input range is 1.5V to 1.95V 1: When Page-1, Reg-10, D1=1, then LDOIN input range is 1.8V to 3.6V DESCRIPTION Output Output Output Output 6.2.114 Page 1 / Register 11: BIT READ/ WRITE RESET VALUE D7-D5 R 000 D4 R/W 1 D3-D1 R/W 000 D0 R/W 0 Common Common Common Common Mode Mode Mode Mode for for for for HPL & HPR is HPL & HPR is HPL & HPR is HPL & HPR is same as full-chip common mode 1.25V 1.5V 1.65V Over Current Protection Configuration Register DESCRIPTION Reserved. Write only default values 0: Over Current detection is disabled for HPL & HPR 1: Over Current detection is enabled for HPL & HPR 000: 001: 010: 011: 100: 101: 110: 111: No debounce is used for Over Current detection Over Current detection is debounced by 8ms Over Current detection is debounce by 16ms Over Current detection is debounced by 32ms Over Current detection is debounced by 64ms Over Current detection is debounced by 128ms Over Current detection is debounced by 256ms Over Current detection is debounced by 512ms 0: Output current will be limited if over current condition is detected 1: Output driver will be powered down if over current condition is detected 6.2.115 Page 1 / Register 12: HPL Routing Selection Register READ/ WRITE RESET VALUE D7-D4 R 0000 D3 R/W 0 0: Left Channel DAC reconstruction filter's positive terminal is not routed to HPL 1: Left Channel DAC reconstruction filter's positive terminal is routed to HPL D2 R/W 0 0: IN1L is not routed to HPL 1: IN1L is routed to HPL D1 R/W 0 0: MAL output is not routed to HPL 1: MAL output is routed to HPL D0 R/W 0 0: MAR output is not routed to HPL 1: MAR output is routed to HPL BIT DESCRIPTION Reserved. Write only default values 6.2.116 Page 1 / Register 13: HPR Routing Selection Register BIT READ/ WRITE RESET VALUE D7-D5 R 000 D4 R/W 0 0: Left Channel DAC reconstruction filter's negative terminal is not routed to HPR 1: Left Channel DAC reconstruction filter's negative terminal is routed to HPR D3 R/W 0 0: Right Channel DAC reconstruction filter's positive terminal is not routed to HPR 1: Right Channel DAC reconstruction filter's positive terminal is routed to HPR D2 R/W 0 0: IN1R is not routed to HPR 1: IN1R is routed to HPR D1 R/W 0 0: MAR output is not routed to HPR 1: MAR output is routed to HPR 132 REGISTER MAP DESCRIPTION Reserved. Write only default values Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D0 R/W 0 DESCRIPTION 0: HPL output is not routed to HPR 1: HPL output is routed to HPR (use when HPL&HPR output is powered by AVDD) 6.2.117 Page 1 / Register 14: LOL Routing Selection Register READ/ WRITE RESET VALUE D7-D5 R 000 D4 R/W 0 0: Right Channel DAC reconstruction filter's negative terminal is not routed to LOL 1: Right Channel DAC reconstruction filter's negative terminal is routed to LOL D3 R/W 0 0: Left Channel DAC reconstruction filter output is not routed to LOL 1: Left Channel DAC reconstruction filter output is routed to LOL D2 R 0 Reserved. Write only default value. D1 R/W 0 0: MAL output is not routed to LOL 1: MAL output is routed to LOL D0 R/W 0 0: LOR output is not routed to LOL 1: LOR output is routed to LOL(use when LOL&LOR output is powered by AVDD) BIT DESCRIPTION Reserved. Write only default values 6.2.118 Page 1 / Register 15: LOR Routing Selection Register READ/ WRITE RESET VALUE D7-D4 R 0000 D3 R/W 0 0: Right Channel DAC reconstruction filter output is not routed to LOR 1: Right Channel DAC reconstruction filter output is routed to LOR D2 R 0 Reserved. Write only default value. D1 R/W 0 0: MAR output is not routed to LOR 1: MAR output is routed to LOR D0 R 0 Reserved. Write only default value. BIT DESCRIPTION Reserved. Write only default values 6.2.119 Page 1 / Register 16: HPL Driver Gain Setting Register READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value. D6 R/W 1 0: HPL driver is not muted 1: HPL driver is muted D5-D0 R/W 00 0000 BIT DESCRIPTION 10 0000-11 1001: Reserved. Do not use 11 1010: HPL driver gain is -6dB (Note: It is not possible to mute HPL while programmed to -6dB) 11 1011: HPL driver gain is -5dB 11 1100: HPL driver gain is -4dB ... 00 0000: HPL driver gain is 0dB ... 01 1011: HPL driver gain is 27dB 01 1100: HPL driver gain is 28dB 01 1101: HPL driver gain is 29dB 01 1110-01 1111: Reserved. Do not use Note: These gains are not valid while using the driver in Class-D mode 6.2.120 Page 1 / Register 17: HPR Driver Gain Setting Register READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value. D6 R/W 1 0: HPR driver is not muted 1: HPR driver is muted BIT Submit Documentation Feedback DESCRIPTION REGISTER MAP 133 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D5-D0 R/W 00 0000 DESCRIPTION 10 0000-11 1001: Reserved. Do not use 11 1010: HPR driver gain is -6dB (Note: It is not possible to mute HPR while programmed to -6dB) 11 1011: HPR driver gain is -5dB 11 1100: HPR driver gain is -4dB ... 00 0000: HPR driver gain is 0dB ... 01 1011: HPR driver gain is 27dB 01 1100: HPR driver gain is 28dB 01 1101: HPR driver gain is 29dB 01 1110-01 1111: Reserved. Do not use Note: These gains are not valid while using the driver in Class-D mode 6.2.121 Page 1 / Register 18: LOL Driver Gain Setting Register READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value. D6 R/W 1 0: LOL driver is not muted 1: LOL driver is muted D5-D0 R/W 00 0000 BIT DESCRIPTION 10 11 11 11 ... 00 ... 01 01 01 01 0000-11 1001: Reserved. Do not use 1010: LOL driver gain is -6dB 1011: LOL driver gain is -5dB 1100: LOL driver gain is -4dB 0000: LOL driver gain is 0dB 1011: LOL driver gain is 27dB 1100: LOL driver gain is 28dB 1101: LOL driver gain is 29dB 1110-01 1111: Reserved. Do not use 6.2.122 Page 1 / Register 19: LOR Driver Gain Setting Register BIT READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value. D6 R/W 1 0: LOR driver is not muted 1: LOR driver is muted D5-D0 R/W 00 0000 DESCRIPTION 10 11 11 11 ... 00 ... 01 01 01 01 0000-11 1001: Reserved. Do not use 1010: LOR driver gain is -6dB 1011: LOR driver gain is -5dB 1100: LOR driver gain is -4dB 0000: LOR driver gain is 0dB 1011: LOR driver gain is 27dB 1100: LOR driver gain is 28dB 1101: LOR driver gain is 29dB 1110-01 1111: Reserved. Do not use 6.2.123 Page 1 / Register 20: BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 134 REGISTER MAP Headphone Driver Startup Control Register DESCRIPTION 00: 01: 10: 11: Soft Soft Soft Soft routing step routing step routing step routing step time time time time is 0ms is 50ms is 100ms is 200ms Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D5-D2 R/W 0000 D1-D0 R/W 00 DESCRIPTION 0000: Slow power up of headphone amp's is disabled 0001: Headphone amps power up slowly in 0.5 time constants 0010: Headphone amps power up slowly in 0.625 time constants 0011; Headphone amps power up slowly in 0.725 time constants 0100: Headphone amps power up slowly in 0.875 time constants 0101: Headphone amps power up slowly in 1.0 time constants 0110: Headphone amps power up slowly in 2.0 time constants 0111: Headphone amps power up slowly in 3.0 time constants 1000: Headphone amps power up slowly in 4.0 time constants 1001: Headphone amps power up slowly in 5.0 time constants 1010: Headphone amps power up slowly in 6.0 time constants 1011: Headphone amps power up slowly in 7.0 time constants 1100: Headphone amps power up slowly in 8.0 time constants 1101: Headphone amps power up slowly in 16.0 time constants ( do not use for Rchg=25K) 1110: Headphone amps power up slowly in 24.0 time constants (do not use for Rchg=25K) 1111: Headphone amps power up slowly in 32.0 time constants (do not use for Rchg=25K) Note: Time constants assume 47uF decoupling cap 00: 01: 10: 11: 6.2.124 Page 1 / Register 21: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 READ/ WRITE RESET VALUE D7 R 0 Submit Documentation Feedback Reserved Register DESCRIPTION Reserved. Write only default values 6.2.125 Page 1 / Register 22: BIT Headphone amps power up time is determined with 25K resistance Headphone amps power up time is determined with 6K resistance Headphone amps power up time is determined with 2K resistance Reserved. Do not use IN1L to HPL Volume Control Register DESCRIPTION Reserved. Write only default value. REGISTER MAP 135 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D6-D0 R/W 000 0000 136 REGISTER MAP DESCRIPTION IN1L to HPL Volume Control 000 0000: Volume Control = 0.0dB 000 0001: Volume Control = -0.5dB 000 0010: Volume Control = -1.0dB 000 0011: Volume Control = -1.5dB 000 0100: Volume Control = -2.0dB 000 0101: Volume Control = -2.5dB 000 0110: Volume Control = -3.0dB 000 0111: Volume Control = -3.5dB 000 1000: Volume Control = -4.0dB 000 1001: Volume Control = -4.5dB 000 1010: Volume Control = -5.0dB 000 1011: Volume Control = -5.5dB 000 1100: Volume Control = -6.0dB 000 1101: Volume Control = -7.0dB 000 1110: Volume Control = -8.0dB 000 1111: Volume Control = -8.5dB 001 0000: Volume Control = -9.0dB 001 0001: Volume Control = -9.5dB 001 0010: Volume Control = -10.0dB 001 0011: Volume Control = -10.5dB 001 0100: Volume Control = -11.0dB 001 0101: Volume Control = -11.5dB 001 0110: Volume Control = -12.0dB 001 0111: Volume Control = -12.5dB 001 1000: Volume Control = -13.0dB 001 1001: Volume Control = -13.5dB 001 1010: Volume Control = -14.0dB 001 1011: Volume Control = -14.5dB 001 1100: Volume Control = -15.0dB 001 1101: Volume Control = -15.5dB 001 1110: Volume Control = -16.0dB 001 1111: Volume Control = -16.5dB 010 0000: Volume Control = -17.1dB 010 0001: Volume Control = -17.5dB 010 0010: Volume Control = -18.1dB 010 0011: Volume Control = -18.6dB 010 0100: Volume Control = -19.1dB 010 0101: Volume Control = -19.6dB 010 0110: Volume Control = -20.1dB 010 0111: Volume Control = -20.6dB 010 1000: Volume Control = -21.1dB 010 1001: Volume Control = -21.6dB 010 1010: Volume Control = -22.1dB 010 1011: Volume Control = -22.6dB 010 1100: Volume Control = -23.1dB 010 1101: Volume Control = -23.6dB 010 1110: Volume Control = -24.1dB 010 1111: Volume Control = -24.6dB 011 0000: Volume Control = -25.1dB 011 0001: Volume Control = -25.6dB 011 0010: Volume Control = -26.1dB 011 0011: Volume Control = -26.6dB 011 0100: Volume Control = -27.1dB 011 0101: Volume Control = -27.6dB 011 0110: Volume Control = -28.1dB 011 0111: Volume Control = -28.6dB 011 1000: Volume Control = -29.1dB 011 1001: Volume Control = -29.6dB 011 1010: Volume Control = -30.1dB 011 1011: Volume Control = -30.6dB 011 1100: Volume Control = -31.1dB 011 1100: Volume Control = -31.6dB 011 1101: Volume Control = -32.1dB 011 1110: Volume Control = -32.6dB 011 1111: Volume Control = -33.1dB 100 0000: Volume Control = -33.6dB 100 0001: Volume Control = -34.1dB Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE DESCRIPTION 100 0010: Volume Control = -34.6dB 100 0011: Volume Control = -35.2dB 100 0100: Volume Control = -35.7dB 100 0101: Volume Control = -36.2dB 100 0110: Volume Control = -36.7dB 100 0111: Volume Control = -37.2dB 100 1000: Volume Control = -37.7dB 100 1001: Volume Control = -38.2dB 100 1010: Volume Control = -38.7dB 100 1011: Volume Control = -39.2dB 100 1100: Volume Control = -39.7dB 100 1101: Volume Control = -40.2dB 100 1110: Volume Control = -40.7dB 100 1111: Volume Control = -41.2dB 101 0000: Volume Control = -41.7dB 101 0001: Volume Control = -42.1dB 101 0010: Volume Control = -42.7dB 101 0011: Volume Control = -43.2dB 101 0100: Volume Control = -43.8dB 101 0101: Volume Control = -44.3dB 101 0110: Volume Control = -44.8dB 101 0111: Volume Control = -45.2dB 101 1000: Volume Control = -45.8dB 101 1001: Volume Control = -46.2dB 101 1010: Volume Control = -46.7dB 101 1011: Volume Control = -47.4dB 101 1100: Volume Control = -47.9dB 101 1101: Volume Control = -48.2dB 101 1110: Volume Control = -48.7dB 101 1111: Volume Control = -49.3dB 110 0000: Volume Control = -50.0dB 110 0001: Volume Control = -50.3dB 110 0010: Volume Control = -51.0dB 110 0011: Volume Control = -51.42dB 110 0100: Volume Control = -51.82dB 110 0101: Volume Control = -52.3dB 110 0110: Volume Control = -52.7dB 110 0111: Volume Control = -53.7dB 110 1000: Volume Control = -54.2dB 110 1001: Volume Control = -55.4dB 110 1010: Volume Control = -56.7dB 110 1011: Volume Control = -58.3dB 110 1100: Volume Control = -60.2dB 110 1101: Volume Control = -62.7dB 110 1110: Volume Control = -64.3dB 110 1111: Volume Control = -66.2dB 111 0000: Volume Control = -68.7dB 111 0001: Volume Control = -72.3dB 111 0010: Volume Control = MUTE 111 0011-111 1111: Reserved. Do not use 6.2.126 Page 1 / Register 23: BIT READ/ WRITE RESET VALUE D7 R 0 Submit Documentation Feedback IN1R to HPR Volume Control Register DESCRIPTION Reserved. Write only default value REGISTER MAP 137 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D6-D0 R/W 000 0000 138 REGISTER MAP DESCRIPTION IN1R to HPR Volume Control 000 0000: Volume Control = 0.0dB 000 0001: Volume Control = -0.5dB 000 0010: Volume Control = -1.0dB 000 0011: Volume Control = -1.5dB 000 0100: Volume Control = -2.0dB 000 0101: Volume Control = -2.5dB 000 0110: Volume Control = -3.0dB 000 0111: Volume Control = -3.5dB 000 1000: Volume Control = -4.0dB 000 1001: Volume Control = -4.5dB 000 1010: Volume Control = -5.0dB 000 1011: Volume Control = -5.5dB 000 1100: Volume Control = -6.0dB 000 1101: Volume Control = -7.0dB 000 1110: Volume Control = -8.0dB 000 1111: Volume Control = -8.5dB 001 0000: Volume Control = -9.0dB 001 0001: Volume Control = -9.5dB 001 0010: Volume Control = -10.0dB 001 0011: Volume Control = -10.5dB 001 0100: Volume Control = -11.0dB 001 0101: Volume Control = -11.5dB 001 0110: Volume Control = -12.0dB 001 0111: Volume Control = -12.5dB 001 1000: Volume Control = -13.0dB 001 1001: Volume Control = -13.5dB 001 1010: Volume Control = -14.0dB 001 1011: Volume Control = -14.5dB 001 1100: Volume Control = -15.0dB 001 1101: Volume Control = -15.5dB 001 1110: Volume Control = -16.0dB 001 1111: Volume Control = -16.5dB 010 0000: Volume Control = -17.1dB 010 0001: Volume Control = -17.5dB 010 0010: Volume Control = -18.1dB 010 0011: Volume Control = -18.6dB 010 0100: Volume Control = -19.1dB 010 0101: Volume Control = -19.6dB 010 0110: Volume Control = -20.1dB 010 0111: Volume Control = -20.6dB 010 1000: Volume Control = -21.1dB 010 1001: Volume Control = -21.6dB 010 1010: Volume Control = -22.1dB 010 1011: Volume Control = -22.6dB 010 1100: Volume Control = -23.1dB 010 1101: Volume Control = -23.6dB 010 1110: Volume Control = -24.1dB 010 1111: Volume Control = -24.6dB 011 0000: Volume Control = -25.1dB 011 0001: Volume Control = -25.6dB 011 0010: Volume Control = -26.1dB 011 0011: Volume Control = -26.6dB 011 0100: Volume Control = -27.1dB 011 0101: Volume Control = -27.6dB 011 0110: Volume Control = -28.1dB 011 0111: Volume Control = -28.6dB 011 1000: Volume Control = -29.1dB 011 1001: Volume Control = -29.6dB 011 1010: Volume Control = -30.1dB 011 1011: Volume Control = -30.6dB 011 1100: Volume Control = -31.1dB 011 1100: Volume Control = -31.6dB 011 1101: Volume Control = -32.1dB 011 1110: Volume Control = -32.6dB 011 1111: Volume Control = -33.1dB 100 0000: Volume Control = -33.6dB 100 0001: Volume Control = -34.1dB Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE DESCRIPTION 100 0010: Volume Control = -34.6dB 100 0011: Volume Control = -35.2dB 100 0100: Volume Control = -35.7dB 100 0101: Volume Control = -36.2dB 100 0110: Volume Control = -36.7dB 100 0111: Volume Control = -37.2dB 100 1000: Volume Control = -37.7dB 100 1001: Volume Control = -38.2dB 100 1010: Volume Control = -38.7dB 100 1011: Volume Control = -39.2dB 100 1100: Volume Control = -39.7dB 100 1101: Volume Control = -40.2dB 100 1110: Volume Control = -40.7dB 100 1111: Volume Control = -41.2dB 101 0000: Volume Control = -41.7dB 101 0001: Volume Control = -42.1dB 101 0010: Volume Control = -42.7dB 101 0011: Volume Control = -43.2dB 101 0100: Volume Control = -43.8dB 101 0101: Volume Control = -44.3dB 101 0110: Volume Control = -44.8dB 101 0111: Volume Control = -45.2dB 101 1000: Volume Control = -45.8dB 101 1001: Volume Control = -46.2dB 101 1010: Volume Control = -46.7dB 101 1011: Volume Control = -47.4dB 101 1100: Volume Control = -47.9dB 101 1101: Volume Control = -48.2dB 101 1110: Volume Control = -48.7dB 101 1111: Volume Control = -49.3dB 110 0000: Volume Control = -50.0dB 110 0001: Volume Control = -50.3dB 110 0010: Volume Control = -51.0dB 110 0011: Volume Control = -51.42dB 110 0100: Volume Control = -51.82dB 110 0101: Volume Control = -52.3dB 110 0110: Volume Control = -52.7dB 110 0111: Volume Control = -53.7dB 110 1000: Volume Control = -54.2dB 110 1001: Volume Control = -55.4dB 110 1010: Volume Control = -56.7dB 110 1011: Volume Control = -58.3dB 110 1100: Volume Control = -60.2dB 110 1101: Volume Control = -62.7dB 110 1110: Volume Control = -64.3dB 110 1111: Volume Control = -66.2dB 111 0000: Volume Control = -68.7dB 111 0001: Volume Control = -72.3dB 111 0010: Volume Control = MUTE 111 0011-111 1111: Reserved. Do not use 6.2.127 Page 1 / Register 24: BIT READ/ WRITE RESET VALUE D7-D6 R 00 Submit Documentation Feedback MAL Volume Control Register DESCRIPTION Reserved. Write only default values REGISTER MAP 139 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D5-D0 R/W 00 0000 DESCRIPTION MAL Volume Control 00 0000: Volume Control = 0.0dB 00 0001: Volume Control = -0.4dB 00 0010: Volume Control = -0.9dB 00 0011: Volume Control = -1.3dB 00 0100: Volume Control = -1.8dB 00 0101: Volume Control = -2.3dB 00 0110: Volume Control = -2.9dB 00 0111: Volume Control = -3.3dB 00 1000: Volume Control = -3.9dB 00 1001: Volume Control = -4.3dB 00 1010: Volume Control = -4.8dB 00 1011: Volume Control = -5.2dB 00 1100: Volume Control = -5.8dB 00 1101: Volume Control = -6.3dB 00 1110: Volume Control = -6.6dB 00 1111: Volume Control = -7.2dB 01 0000: Volume Control = -7.8dB 01 0001: Volume Control = -8.2dB 01 0010: Volume Control = -8.5dB 01 0011: Volume Control = -9.3dB 01 0100: Volume Control = -9.7dB 01 0101: Volume Control = -10.1dB 01 0110: Volume Control = -10.6dB 01 0111: Volume Control = -11.0dB 01 1000: Volume Control = -11.5dB 01 1001: Volume Control = -12.0dB 01 1010: Volume Control = -12.6dB 01 1011: Volume Control = -13.2dB 01 1100: Volume Control = -13.8dB 01 1101: Volume Control = -14.5dB 01 1110: Volume Control = -15.3dB 01 1111: Volume Control = -16.1dB 10 0000: Volume Control = -17.0dB 10 0001: Volume Control = -18.1dB 10 0010: Volume Control = -19.2dB 10 0011: Volume Control = -20.6dB 10 0100: Volume Control = -22.1dB 10 0101: Volume Control = -24.1dB 10 0110: Volume Control = -26.6dB 10 0111: Volume Control = -30.1dB 10 1000: Volume Control = MUTE 10 1001-11 1111: Reserved. Do no use 6.2.128 Page 1 / Register 25: BIT READ/ WRITE RESET VALUE D7-D6 R 00 140 REGISTER MAP MAR Volume Control Register DESCRIPTION Reserved. Write only default values Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 (continued) BIT READ/ WRITE RESET VALUE D5-D0 R/W 00 0000 DESCRIPTION MAR Volume Control 00 0000: Volume Control = 0.0dB 00 0001: Volume Control = -0.4dB 00 0010: Volume Control = -0.9dB 00 0011: Volume Control = -1.3dB 00 0100: Volume Control = -1.8dB 00 0101: Volume Control = -2.3dB 00 0110: Volume Control = -2.9dB 00 0111: Volume Control = -3.3dB 00 1000: Volume Control = -3.9dB 00 1001: Volume Control = -4.3dB 00 1010: Volume Control = -4.8dB 00 1011: Volume Control = -5.2dB 00 1100: Volume Control = -5.8dB 00 1101: Volume Control = -6.3dB 00 1110: Volume Control = -6.6dB 00 1111: Volume Control = -7.2dB 01 0000: Volume Control = -7.8dB 01 0001: Volume Control = -8.2dB 01 0010: Volume Control = -8.5dB 01 0011: Volume Control = -9.3dB 01 0100: Volume Control = -9.7dB 01 0101: Volume Control = -10.1dB 01 0110: Volume Control = -10.6dB 01 0111: Volume Control = -11.0dB 01 1000: Volume Control = -11.5dB 01 1001: Volume Control = -12.0dB 01 1010: Volume Control = -12.6dB 01 1011: Volume Control = -13.2dB 01 1100: Volume Control = -13.8dB 01 1101: Volume Control = -14.5dB 01 1110: Volume Control = -15.3dB 01 1111: Volume Control = -16.1dB 10 0000: Volume Control = -17.0dB 10 0001: Volume Control = -18.1dB 10 0010: Volume Control = -19.2dB 10 0011: Volume Control = -20.6dB 10 0100: Volume Control = -22.1dB 10 0101: Volume Control = -24.1dB 10 0110: Volume Control = -26.6dB 10 0111: Volume Control = -30.1dB 10 1000: Volume Control = MUTE 10 1001-11 1111: Reserved. Do no use 6.2.129 Page 1 / Register 26-50: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved Register DESCRIPTION Reserved. Write only default values 6.2.130 Page 1 / Register 51: MICBIAS Configuration Register READ/ WRITE RESET VALUE D7 R 0 Reserved. Write only default value. D6 R/W 0 0: MICBIAS powered down 1: MICBIAS powered up D5-D4 R/W 00 MICBIAS Output Voltage Configuration 00: MICBIAS = 1.04V (CM=0.75V) or MICBIAS = 1.25V(CM=0.9V) 01: MICBIAS = 1.425V(CM=0.75V) or MICBIAS = 1.7V(CM=0.9V) 10: MICBIAS = 2.075V(CM=0.75V) or MICBIAS = 2.5V(CM=0.9V) 11: MICBIAS is switch to power supply D3 R/W 0 0: MICBIAS voltage is generated from AVDD 1: MICBIAS voltage is generated from LDOIN BIT Submit Documentation Feedback DESCRIPTION REGISTER MAP 141 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D2-D0 R 000 DESCRIPTION Reserved. Write only default value. 6.2.131 Page 1 / Register 52: Configuration Register Left MICPGA Positive Terminal Input Routing BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 IN1L to Left MICPGA positive terminal selection 00: IN1L is not routed to Left MICPGA 01: IN1L is routed to Left MICPGA with 10K resistance 10: IN1L is routed to Left MICPGA with 20K resistance 11: IN1L is routed to Left MICPGA with 40K resistance D5-D4 R/W 00 IN2L to Left MICPGA positive terminal selection 00: IN2L is not routed to Left MICPGA 01: IN2L is routed to Left MICPGA with 10K resistance 10: IN2L is routed to Left MICPGA with 20K resistance 11: IN2L is routed to Left MICPGA with 40K resistance D3-D2 R/W 00 IN3L to Left MICPGA positive terminal selection 00: IN3L is not routed to Left MICPGA 01: IN3L is routed to Left MICPGA with 10K resistance 10: IN3L is routed to Left MICPGA with 20K resistance 11: IN3L is routed to Left MICPGA with 40K resistance D1-D0 R/W 00 IN1R to Left MICPGA positive terminal selection 00: IN1R is not routed to Left MICPGA 01: IN1R is routed to Left MICPGA with 10K resistance 10: IN1R is routed to Left MICPGA with 20K resistance 11: IN1R is routed to Left MICPGA with 40K resistance DESCRIPTION 6.2.132 Page 1 / Register 53: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved Register DESCRIPTION Reserved. Write only default values 6.2.133 Page 1 / Register 54: Configuration Register Left MICPGA Negative Terminal Input Routing BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 CM to Left MICPGA (CM1L) positive terminal selection 00: CM is not routed to Left MICPGA 01: CM is routed to Left MICPGA via CM1L with 10K resistance 10: CM is routed to Left MICPGA via CM1L with 20K resistance 11: CM is routed to Left MICPGA via CM1L with 40K resistance D5-D4 R/W 00 IN2R to Left MICPGA positive terminal selection 00: IN2R is not routed to Left MICPGA 01: IN2R is routed to Left MICPGA with 10K resistance 10: IN2R is routed to Left MICPGA with 20K resistance 11: IN2R is routed to Left MICPGA with 40K resistance D3-D2 R/W 00 IN3R to Left MICPGA positive terminal selection 00: IN3R is not routed to Left MICPGA 01: IN3R is routed to Left MICPGA with 10K resistance 10: IN3R is routed to Left MICPGA with 20K resistance 11: IN3R is routed to Left MICPGA with 40K resistance D1-D0 R/W 00 CM to Left MICPGA (CM2L) positive terminal selection 00: CM is not routed to Left MICPGA 01: CM is routed to Left MICPGA via CM2L with 10K resistance 10: CM is routed to Left MICPGA via CM2L with 20K resistance 11: CM is routed to Left MICPGA via CM2L with 40K resistance 142 REGISTER MAP DESCRIPTION Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.134 Page 1 / Register 55: Configuration Register Right MICPGA Positive Terminal Input Routing BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 IN1R to Right MICPGA positive terminal selection 00: IN1R is not routed to Right MICPGA 01: IN1R is routed to Right MICPGA with 10K resistance 10: IN1R is routed to Right MICPGA with 20K resistance 11: IN1R is routed to Right MICPGA with 40K resistance D5-D4 R/W 00 IN2R to Right MICPGA positive terminal selection 00: IN2R is not routed to Right MICPGA 01: IN2R is routed to Right MICPGA with 10K resistance 10: IN2R is routed to Right MICPGA with 20K resistance 11: IN2R is routed to Right MICPGA with 40K resistance D3-D2 R/W 00 IN3R to Right MICPGA positive terminal selection 00: IN3R is not routed to Right MICPGA 01: IN3R is routed to Right MICPGA with 10K resistance 10: IN3R is routed to Right MICPGA with 20K resistance 11: IN3R is routed to Right MICPGA with 40K resistance D1-D0 R/W 00 IN2L to Right MICPGA positive terminal selection 00: IN2L is not routed to Right MICPGA 01: IN2L is routed to Right MICPGA with 10K resistance 10: IN2L is routed to Right MICPGA with 20K resistance 11: IN2L is routed to Right MICPGA with 40K resistance DESCRIPTION 6.2.135 Page 1 / Register 56: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved Register DESCRIPTION Reserved. Write only default values 6.2.136 Page 1 / Register 57: Configuration Register Right MICPGA Negative Terminal Input Routing BIT READ/ WRITE RESET VALUE D7-D6 R/W 00 CM to Right MICPGA (CM1R) positive terminal selection 00: CM is not routed to Right MICPGA 01: CM is routed to Right MICPGA via CM1R with 10K resistance 10: CM is routed to Right MICPGA via CM1R with 20K resistance 11: CM is routed to Right MICPGA via CM1R with 40K resistance D5-D4 R/W 00 IN1L to Right MICPGA positive terminal selection 00: IN1L is not routed to Right MICPGA 01: IN1L is routed to Right MICPGA with 10K resistance 10: IN1L is routed to Right MICPGA with 20K resistance 11: IN1L is routed to Right MICPGA with 40K resistance D3-D2 R/W 00 IN3L to Right MICPGA positive terminal selection 00: IN3L is not routed to Right MICPGA 01: IN3L is routed to Right MICPGA with 10K resistance 10: IN3L is routed to Right MICPGA with 20K resistance 11: IN3L is routed to Right MICPGA with 40K resistance D1-D0 R/W 00 CM to Right MICPGA (CM2R) positive terminal selection 00: CM is not routed to Right MICPGA 01: CM is routed to Right MICPGA via CM2R with 10K resistance 10: CM is routed to Right MICPGA via CM2R with 20K resistance 11: CM is routed to Right MICPGA via CM2R with 40K resistance DESCRIPTION 6.2.137 Page 1 / Register 58: BIT READ/ WRITE RESET VALUE D7 R/W 0 Submit Documentation Feedback Floating Input Configuration Register DESCRIPTION 0: IN1L input is not weakly connected to common mode 1: IN1L input is weakly driven to common mode. Use when not routing IN1L to Left and Right MICPGA and HPL REGISTER MAP 143 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D6 R/W 0 0: IN1R input is not weakly connected to common mode 1: IN1R input is weakly driven to common mode. Use when not routing IN1L to Left and Right MICPGA and HPR D5 R/W 0 0: IN2L input is not weakly connected to common mode 1: IN2L input is weakly driven to common mode. Use when not routing IN2L to Left and Right MICPGA D4 R/W 0 0: IN2R input is not weakly connected to common mode 1: IN2R input is weakly driven to common mode. Use when not routing IN2R to Left and Right MICPGA D3 R/W 0 0: IN3L input is not weakly connected to common mode 1: IN3L input is weakly driven to common mode. Use when not routing IN3L to Left and Right MICPGA D2 R/W 0 0: IN3R input is not weakly connected to common mode 1: IN3R input is weakly driven to common mode. Use when not routing IN3R to Left and Right MICPGA D1-D0 R 00 Reserved. Write only default values DESCRIPTION 6.2.138 Page 1 / Register 59: BIT READ/ WRITE RESET VALUE D7 R/W 1 D6-D0 R/W 000 0000 DESCRIPTION 0: Left MICPGA Gain is enabled 1: Left MICPGA Gain is set to 0dB Left MICPGA Volume Control 000 0000: Volume Control = 0.0dB 000 0001: Volume Control = 0.5dB 000 0010: Volume Control = 1.0dB ... 101 1101: Volume Control = 46.5dB 101 1110: Volume Control = 47.0dB 101 1111: Volume Control = 47.5dB 110 0000-111 1111: Reserved. Do not use 6.2.139 Page 1 / Register 60: BIT READ/ WRITE RESET VALUE D7 R/W 0 D6-D0 R/W 000 0000 READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 144 REGISTER MAP Right MICPGA Volume Control Register DESCRIPTION 0: Right MICPGA Gain is enabled 1: Right MICPGA Gain is set to 0dB Right MICPGA Volume Control 000 0000: Volume Control = 0.0dB 000 0001: Volume Control = 0.5dB 000 0010: Volume Control = 1.0dB ... 101 1101: Volume Control = 46.5dB 101 1110: Volume Control = 47.0dB 101 1111: Volume Control = 47.5dB 110 0000-111 1111: Reserved. Do not use 6.2.140 Page 1 / Register 61: BIT Left MICPGA Volume Control Register ADC Power Tune Configuration Register DESCRIPTION 0000 0110 1011 1111 0000: PTM_R4 (Default) 0100: PTM_R3 0110: PTM_R2 1111: PTM_R1 Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.141 Page 1 / Register 62: ADC Analog Volume Control Flag Register BIT READ/ WRITE RESET VALUE D7-D2 R 00 0000 D1 R 0 Left Channel Analog Volume Control Flag 0: Applied Volume is not equal to Programmed Volume 1: Applied Volume is equal to Programmed Volume D0 R 0 Right Channel Analog Volume Control Flag 0: Applied Volume is not equal to Programmed Volume 1: Applied Volume is equal to Programmed Volume DESCRIPTION Reserved. Write only default values 6.2.142 Page 1 / Register 63: DAC Analog Gain Control Flag Register BIT READ/ WRITE RESET VALUE D7 R 0 HPL Gain Flag 0: Applied Gain is not equal to Programmed Gain 1: Applied Gain is equal to Programmed Gain D6 R 0 HPR Gain Flag 0: Applied Gain is not equal to Programmed Gain 1: Applied Gain is equal to Programmed Gain D5 R 0 LOL Gain Flag 0: Applied Gain is not equal to Programmed Gain 1: Applied Gain is equal to Programmed Gain D4 R 0 LOR Gain Flag 0: Applied Gain is not equal to Programmed Gain 1: Applied Gain is equal to Programmed Gain D3 R 0 IN1L to HPL Bypass Volume Flag 0: Applied Volume is not equal to Programmed Volume 1: Applied Volume is equal to Programmed Volume D2 R 0 IN1R to HPR Bypass Volume Flag 0: Applied Volume is not equal to Programmed Volume 1: Applied Volume is equal to Programmed Volume D1 R 0 MAL Volume Flag 0: Applied Volume is not equal to Programmed Volume 1: Applied Volume is equal to Programmed Volume D0 R 0 MAR Volume Flag 0: Applied Volume is not equal to Programmed Volume 1: Applied Volume is equal to Programmed Volume DESCRIPTION 6.2.143 Page 1 / Register 64-70: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 DESCRIPTION Reserved. Write only default values 6.2.144 Page 1 / Register 71: BIT READ/ WRITE Reserved Register Analog Input Quick Charging Configuration Register RESET VALUE D7-D6 R 00 D5-D0 R/W 00 0000 DESCRIPTION Reserved. Write only default values Analog inputs power up time 00 0000: Default. Use one of the values give below 11 0001: Analog inputs power up time is 3.1 ms 11 0010: Analog inputs power up time is 6.4 ms 11 0011: Analog inputs power up time is 1.6 ms Others: Do not use 6.2.145 Page 1 / Register 72-122: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Submit Documentation Feedback Reserved Register DESCRIPTION Reserved. Write only default values REGISTER MAP 145 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.146 Page 1 / Register 123: BIT READ/ WRITE RESET VALUE D7-D3 R 0 0000 D2-D0 R/W 000 Reference Power-up Configuration Register DESCRIPTION Reserved. Write only default values Reference Power Up configuration 000: Reference will power up slowly when analog blocks are powered up 001: Reference will power up in 40ms when analog blocks are powered up 010: Reference will power up in 80ms when analog blocks are powered up 011: Reference will power up in 120ms when analog blocks are powered up 100: Force power up of reference. Power up will be slow 101: Force power up of reference. Power up time will be 40ms 110: Force power up of reference. Power up time will be 80ms 111: Force power up of reference. Power up time will be 120ms 6.2.147 Page 1 / Register 124-127: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 Reserved Register DESCRIPTION Reserved. Write only default values 6.2.148 Page 8 / Register 0: BIT www.ti.com Page Select Register DESCRIPTION Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. 6.2.149 Page 8 / Register 1: ADC Adaptive Filter Configuration Register READ/ WRITE RESET VALUE D7-D3 R 0000 0 D2 R/W 0 ADC Adaptive Filtering Control 0: Adaptive Filtering disabled for ADC 1: Adaptive Filtering enabled for ADC D1 R 0 ADC Adaptive Filter Buffer Control Flag 0: In adaptive filter mode, ADC accesses ADC Coefficient Buffer-A and control interface accesses ADC Coefficient Buffer-B 1: In adaptive filter mode, ADC accesses ADC Coefficient Buffer-B and control interface accesses ADC Coefficient Buffer-A D0 R/W 0 ADC Adaptive Filter Buffer Switch control 0: ADC Coefficient Buffers will not be switched at next frame boundary 1: ADC Coefficient Buffers will be switched at next frame boundary, if in adaptive filtering mode. This will self clear on switching. BIT DESCRIPTION Reserved. Write only default values 6.2.150 Page 8 / Register 1-7: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 DESCRIPTION Reserved. Write only default values 6.2.151 Page 8 / Register 8-127: BIT READ/ WRITE RESET VALUE D7-D0 R/W xxxx xxxx 146 REGISTER MAP Reserved ADC Coefficients Buffer-A C(0:29) DESCRIPTION 24-bit coefficients C0 through C29 of ADC Coefficient Buffer-A. Refer Table ?? for details When Page-8, Reg-01d, D2='0' the read write access to these registers is allowed only when ADC channel is powered down Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.152 Page 9-16 / Register 0: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 Page Select Register DESCRIPTION Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. 6.2.153 Page 9-16 / Register 1-7: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved DESCRIPTION Reserved. Write only default values 6.2.154 Page 9-16 / Register 8-127: BIT READ/ WRITE RESET VALUE D7-D0 R/W xxxx xxxx DESCRIPTION 24-bit coefficients ADC Coefficient Buffer-A. Refer Table ?? for details When Page-8, Reg-01d, D2='0' (Adaptive filtering disabled) the read write access to these registers is allowed only when ADC channel is powered down 6.2.155 Page 26-34 / Register 0: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 Page Select Register DESCRIPTION Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. 6.2.156 Page 26-34 / Register 1-7: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 READ/ WRITE RESET VALUE D7-D0 R/W xxxx xxxx Reserved. Write only default values READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 ADC Coefficients Buffer-B C(0:255) DESCRIPTION 24-bit coefficients of ADC Coefficient Buffer-B. Refer Table ?? for details When Page-8, Reg-01d, D2='0' (Adaptive filtering disabled) the read write access to these registers is allowed only when ADC channel is powered down 6.2.158 Page 44 / Register 0: BIT Reserved. DESCRIPTION 6.2.157 Page 26-34 / Register 8-127: BIT ADC Coefficients Buffer-A C(30:255) Page Select Register DESCRIPTION Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. 6.2.159 Page 44 / Register 1: DAC Adaptive Filter Configuration Register BIT READ/ WRITE RESET VALUE D7-D3 R 0000 0 D2 R/W 0 DAC Adaptive Filtering Control 0: Adaptive Filtering disabled for DAC 1: Adaptive Filtering enabled for DAC D1 R 0 DAC Adaptive Filter Buffer Control Flag 0: In adaptive filter mode, DAC accesses DAC Coefficient Buffer-A and control interface accesses DAC Coefficient Buffer-B 1: In adaptive filter mode, DAC accesses DAC Coefficient Buffer-B and control interface accesses DAC Coefficient Buffer-A Submit Documentation Feedback DESCRIPTION Reserved. Write only default values REGISTER MAP 147 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com (continued) BIT READ/ WRITE RESET VALUE D0 R/W 0 DESCRIPTION DAC Adaptive Filter Buffer Switch control 0: DAC Coefficient Buffers will not be switched at next frame boundary 1: DAC Coefficient Buffers will be switched at next frame boundary, if in adaptive filtering mode. This will self clear on switching. 6.2.160 Page 44 / Register 1-7: BIT READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Reserved DESCRIPTION Reserved. Write only default values 6.2.161 Page 44 / Register 8-127: BIT READ/ WRITE RESET VALUE D7-D0 R/W xxxx xxxx DESCRIPTION 24-bit coefficients C0 through C29 of DAC Coefficient Buffer-A. Refer Table ?? for details When Page-44, Reg-01d, D2='0' the read write access to these registers is allowed only when DAC channel is powered down 6.2.162 Page 45-52 / Register 0: BIT READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 READ/ WRITE RESET VALUE D7-D0 R 0000 0000 Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. READ/ WRITE RESET VALUE D7-D0 R/W xxxx xxxx Reserved. Write only default values READ/ WRITE RESET VALUE D7-D0 R/W 0000 0000 24-bit coefficients DAC Coefficient Buffer-A. Refer Table ?? for details When Page-44, Reg-01d, D2='0' (Adaptive filtering disabled) the read write access to these registers is allowed only when DAC channel is powered down READ/ WRITE RESET VALUE D7-D0 R 0000 0000 148 REGISTER MAP Page Select Register DESCRIPTION Page Select Register 0-255: Selects the Register Page for next read or write command. Refer Table "Summary of Memory Map" for details. 6.2.166 Page 62-70 / Register 1-7: BIT DAC Coefficients Buffer-A C(30:255) DESCRIPTION 6.2.165 Page 62-70 / Register 0: BIT Reserved. DESCRIPTION 6.2.164 Page 45-52 / Register 8-127: BIT Page Select Register DESCRIPTION 6.2.163 Page 45-52 / Register 1-7: BIT DAC Coefficients Buffer-A C(0:29) Reserved. DESCRIPTION Reserved. Write only default values Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 6.2.167 Page 62-70 / Register 8-127: BIT READ/ WRITE RESET VALUE D7-D0 R/W xxxx xxxx DAC Coefficients Buffer-B C(0:255) DESCRIPTION 24-bit coefficients of DAC Coefficient Buffer-B. Refer Table ?? for details When Page-44, Reg-01d, D2='0' (Adaptive filtering disabled) the read write access to these registers is allowed only when DAC channel is powered down 6.3 ADC Coefficients A+B Table 6-2. ADC Coefficient Buffer-A Map Coef No Page No Base Register Base Register + 0 Base Register + 1 Base Register + 2 Base Register + 3 C0 8 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C1 8 12 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. .. .. .. .. .. ... C29 8 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C30 9 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. .. .. .. .. .. ... C59 9 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C60 10 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. .. .. .. .. .. 20 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... C63 10 Table 6-3. ADC Coefficient Buffer-B Map Coef No Page No Base Register Base Register + 0 Base Register + 1 Base Register + 2 Base Register + 3 C0 26 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C1 26 12 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. .. .. .. .. .. ... C29 26 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C30 27 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. .. .. .. .. .. ... C59 27 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C60 27 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. .. .. .. .. .. 20 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... C63 28 6.4 ADC Defaults Table 6-4. Default values of ADC Coefficients in Buffers A and B ADC Buffer-A,B Coefficients Submit Documentation Feedback Default Value at reset C0 00000000H C1 00170000H C2 00170000H C3 7DD30000H C4 7FFFFF00H C5,C6 00000000H C7 7FFFFF00H C8,..,C11 00000000H REGISTER MAP 149 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 www.ti.com Table 6-4. Default values of ADC Coefficients in Buffers A and B (continued) ADC Buffer-A,B Coefficients Default Value at reset C12 7FFFFF00H C13,..,C16 00000000H C17 7FFFFF00H C18,..,C21 00000000H C22 7FFFFF00H C23,..,C26 00000000H C27 7FFFFF00H C28,..,C35 00000000H C36 7FFFFF00H C37,C38 00000000H C39 7FFFFF00H C40,..,C43 00000000H C44 7FFFFF00H C45,..,C48 00000000H C49 7FFFFF00H C50,..,C53 00000000H C54 7FFFFF00H C55,..,C58 00000000H C59 7FFFFF00H C60,..,C63 00000000H 6.5 DAC Coefficients A+B Table 6-5. DAC Coefficient Buffer-A Map Coef No Page No Base Register Base Register + 0 Base Register + 1 Base Register + 2 Base Register + 3 C0 44 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C1 44 12 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... .. .. .. .. .. .. C29 44 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C30 45 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... .. .. .. .. .. .. C59 45 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C60 46 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... .. .. .. .. .. .. C76 46 72 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. Table 6-6. DAC Coefficient Buffer-B Map Coef No Page No Base Register Base Register + 0 Base Register + 1 Base Register + 2 Base Register + 3 C0 62 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C1 62 12 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... .. .. .. .. .. .. C29 62 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C30 63 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... .. .. .. .. .. .. 150 REGISTER MAP Submit Documentation Feedback TLV320AIC3204 Ultra Low Power Stereo Audio Codec www.ti.com SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 Table 6-6. DAC Coefficient Buffer-B Map (continued) Coef No Page No Base Register Base Register + 0 Base Register + 1 Base Register + 2 Base Register + 3 C59 63 124 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. C60 64 8 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. ... .. .. .. .. .. .. C76 64 72 Coef(23:16) Coef(15:8) Coef(7:0) Reserved. 6.6 DAC Defaults Table 6-7. Default values of DAC Coefficients in Buffers A and B DAC Buffer-A,B Coefficients Default Value at reset C0 00000000H C1 7FFFFF00H C2,..,C5 00000000H C6 7FFFFF00H C7,..,C10 00000000H C11 7FFFFF00H C12,..,C15 00000000H C16 7FFFFF00H C17,..,C20 00000000H C21 7FFFFF00H C22,..,C25 00000000H C26 7FFFFF00H C27,..,C30 00000000H C31,C32 00000000H C33 7FFFFF00H C34,..,C37 00000000H C38 7FFFFF00H C39,..,C42 00000000H C43 7FFFFF00H C44,..,C47 00000000H C48 7FFFFF00H C49,..,C52 00000000H C53 7FFFFF00H C54,..,C57 00000000H C58 7FFFFF00H C59,..,C64 00000000H C65 7FFFFF00H C66,C67 00000000H C68 7FFFFF00H C69,C70 00000000H C71 7FF70000H C72 10090000H C73 7FEF0000H C74,C75 00110000H C76 7FDE0000H Submit Documentation Feedback REGISTER MAP 151 TLV320AIC3204 Ultra Low Power Stereo Audio Codec SLOS602A - SEPTEMBER 2008 - REVISED OCTOBER 2008 152 REGISTER MAP www.ti.com Submit Documentation Feedback PACKAGE OPTION ADDENDUM www.ti.com 26-Jan-2009 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty TLV320A3204IRHBRG4 ACTIVE QFN RHB 32 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HR TLV320AIC3204IRHBR ACTIVE QFN RHB 32 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HR TLV320AIC3204IRHBT ACTIVE QFN RHB 32 250 CU NIPDAU Level-3-260C-168 HR Green (RoHS & no Sb/Br) Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 19-Aug-2011 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TLV320AIC3204IRHBR QFN RHB 32 3000 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 TLV320AIC3204IRHBR QFN RHB 32 3000 330.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 TLV320AIC3204IRHBT QFN RHB 32 250 180.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 TLV320AIC3204IRHBT QFN RHB 32 250 180.0 12.4 5.3 5.3 1.5 8.0 12.0 Q2 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 19-Aug-2011 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TLV320AIC3204IRHBR QFN RHB 32 3000 346.0 346.0 29.0 TLV320AIC3204IRHBR QFN RHB 32 3000 346.0 346.0 29.0 TLV320AIC3204IRHBT QFN RHB 32 250 190.5 212.7 31.8 TLV320AIC3204IRHBT QFN RHB 32 250 210.0 185.0 35.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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