19-3838; Rev 2; 12/10 CMAXQUSB User's Guide The Maxim Command Module (CMAXQUSB) receives commands from an IBM PC through the USB to create an SPITM or SMBusTM/I2C-compatible interface. Maxim evaluation kits (EV kits) that make use of the CMAXQUSB require custom software and can be ordered together as an evaluation system (EV system). Ordering information for EV systems is included in the EV kit's corresponding data sheet. An EV system is an EV kit combined with an interface board such as a CMAXQUSB and custom software. Refer to the appropriate EV kit data sheet for quick start and detailed operating instructions. The use of the CMAXQUSB as a MAXQ2000 development target is not supported. Rather, use the MAXQ2000 EV kit (available at www.maxim-ic.com/MAXQ2000-KIT) for this purpose. The CMAXQUSB has been tested on Windows (R) 98 Second Edition, Windows 2000, and Windows XP(R). Features o PC-Controlled I/O Platform o USB Powered o Provides 2.5V, 3.3V, or 5V to EV Kit o SPI Bus: 8MHz Burst o I2C/2-Wire Bus: Fast 400kHz/Standard 100kHz o Optional 1.5k I2C Bus Pullup Resistors Ordering Information PART PC INTERFACE OPERATING SYSTEMS SUPPORTED CMAXQUSB+ USB Windows 98SE/2000/XP +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION C1, C2, C3 C4 C5 C6, C7 C8, C9 C10-C16, C23-C32 (on back of board) QTY DESCRIPTION 3 22F 10%, 16V X5R ceramic capacitors (1210) TDK C3225X5R1C226K 1 4.7F 10%, 10V X7R ceramic capacitor (0805) TDK C2012X5R1A475K 1 0.033F 10%, 6.3V (min) X7R ceramic capacitor (0603) TDK C1608X7R1E333K Murata GRM188R71E333K Taiyo Yuden EMK107BJ333KA DESIGNATION QTY DESCRIPTION C17-C22 (on back of board) 6 1F, 6.3V (min) X7R ceramic capacitors (0603) TDK C1608X5R0J105K Murata GRM188R60J105K Taiyo Yuden JMK107BJ105MA D1 1 100V, 1A bridge rectifier (D-70/DIP-6) Diodes Inc. DF005M J2, J3, JU2-JU5 0 Not installed, 2-pin headers LED1, LED2 2 Red LEDs (T1-3/4) Panasonic LN21RPH 2 22pF 5% C0G ceramic capacitors (0603) TDK C1608C0G1H220J Murata GRM1885C1H220J LED3 1 Yellow (amber) LED (T1-3/4) Panasonic LN41YPH LED4 1 Green LED (T1-3/4) Panasonic LN31GCPH 2 10pF 5% C0G ceramic capacitors (0603) Murata GRM1885C1H100J TDK C1608C0G1H100J P2 1 USB type-B, right-angle PC-mount receptacle 0.1F 10%, 10V (min) X7R ceramic capacitors (0603) TDK C1608X7R1E104K P3 1 20-pin (2 x 10) right-angle male header P4 1 40-pin (2 x 20) right-angle male header P5 (JTAG) 1 10-pin (2 x 5) vertical header, keyed pin 7 17 SPI is a trademark of Motorola, Inc. SMBus is a trademark of Intel Corp. Windows and Windows XP are registered trademarks of Microsoft Corp. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 Evaluates: SPI and SMBus/I2C-Compatible Parts General Description Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide Component List (continued) DESIGNATION QTY P1 0 Not installed (2mm power jack) P6 1 3-pin header P7 1 4-pin header P8 1 6-pin header R1 1 2.2k 5% resistor (1206) 2 DESCRIPTION DESIGNATION QTY DESCRIPTION U9 1 Low-voltage level translator (8 SOT23) Maxim MAX3373EEKA+T (Top Mark: AAKS) U10 1 Low-voltage level translator (14 TSSOP) Maxim MAX3390EEUD+ U11 1 LDO linear regulator (5 SC70) Maxim MAX8511EXK33+T (Top Mark: AEI) Y1 1 16MHz crystal (HC49/US) Parallel resonant, 20pF load Suntsu SCS20B-16.000MHz-I 1 6MHz crystal (HC49/US) Parallel resonant, 20pF load Suntsu SCS22B-6.000MHz-I R2, R5, R6 3 1.5k 5% resistors (1206) R7, R8-R11 5 470k 5% resistors (1206) R12, R13 2 27 5% resistors (1206) R14 1 10k 5% resistor (1206) R18 1 4.7k 5% resistor (1206) R19 1 100k 5% resistor (1206) SW1 1 2-circuit DIP switch (DIP-4) U1 1 Low-power microcontroller (68 QFN) Maxim MAXQ2000-RAX+ Y2 U2 1 FTDI FT232BL (32 TQFP, 7mm x 7mm) Y3 0 Not installed, 32.768kHz crystal -- 1 Vertical header 2 x 3 pins U3 1 LDO linear regulator (5 SC70) Maxim MAX8511EXK25+T (Top Mark: ADV) -- 4 Rubber bumpers, 0.100in H x 0.400in W square -- 1 U4 1 93C46 type 3-wire EEPROM (8 SO) 16-bit architecture USB high-speed A-to-B cable, 5ft (1.5m) -- 1 Shunt 1 1 Low-voltage, p-channel MOSFET (8 SO) Maxim MAX890LESA+ -- U5 PCB: COMMAND MODULE (CMAXQUSB) U6, U7, U8 3 8-channel level translators (20 TSSOP) Maxim MAX3001EEUP+ CMAXQUSB User's Guide SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Panasonic Corp. 800-344-2112 www.panasonic.com Suntsu Frequency Control 949-305-0220 www.suntsuinc.com Taiyo Yuden 800-348-2496 www.t-yuden.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the CMAXQUSB or MAXQ2000 when contacting these component suppliers. Quick Start Administrator privileges may be required when first installing the device on Windows 2000/XP. board for the first time, the Windows plug-and-play system detects the new hardware and automatically runs the Add New Hardware Wizard (if the Add New Hardware Wizard does not appear after a minute, unplug the board from the USB and plug it in again). Make certain to specify the search location. Maxim software designed for CMAXQUSB includes a copy of the device driver in the installed software directory. Refer to Application Note 3601: Troubleshooting Windows Plug-and-Play and USB for Maxim Evaluation Kits for more details. 6) During device driver installation, Windows XP shows a warning message indicating that the device driver Maxim uses does not contain a digital signature. This is not an error condition and it is safe to proceed with the installation. 7) Start the EV kit software by clicking its icon in the Windows Start menu. 8) Refer to the companion EV kit's documentation for further instructions demonstrating its custom software. Procedure Detailed Description of Hardware Do not turn on the power until all connections are complete. The low-voltage RISC microcontroller, MAXQ2000-RAX (U1), processes commands sent by a program running on the PC. Each particular EV kit has its own custom software specific to that kit. The FTDI FT232BM (U2) provides the USB engine. The USB 5V power is regulated down to 3.3V by U11 and down to 2.5V by U3. LED1 indicates USB 5V power is present. LED2, LED3, LED4 are general-purpose indicators. Level translators U6-U10 convert the MAXQ2000's 2.5V logic signals to the external VDD logic level, which is jumper-selectable for 2.5V, 3.3V, or 5V logic. U9, the MAX3372, is a bidirectional level translator specially designed for the I2C bus. DIP switch SW1 optionally disables the on-board 1.5k termination resistors, allowing the use of external, user-supplied I2C pullup resistors. Level translator U10 is designed for SPI. Maxim EV systems whose ordering number ends in EVCMAXQU are two-board sets, comprising a CMAXQUSB interface board and an EV kit board specific to the device being evaluated. For example, the MAX6870EVCMAXQU would be a two-board set consisting of the MAX6870EVKIT and the CMAXQUSB. The following generic quick start procedure assumes that the CMAXQUSB board will be used with a companion EV kit. Required Equipment * Any Maxim EV system with the EVCMAXQU suffix, such as the MAX6870EVCMAXQU Device-specific EV kit board CMAXQUSB interface board USB type A-to-B cable (included with the CMAXQUSB) * Computer running Windows 98SE/2000/XP with a spare USB port 1) Select 2.5V, 3.3V, or 5V logic by setting the CMAXQUSB VDD SELECT jumper. See the Jumper Tables section. 2) Ensure that the companion EV kit board's jumper settings are correct. Refer to your companion EV kit's documentation. 3) Connect the boards together. 4) Install the evaluation software on your computer by running the INSTALL.EXE program on the installation disk. The program files are copied and icons are created for them in the Windows Start menu. 5) Connect the USB cable between the CMAXQUSB and the computer. When you plug in the CMAXQUSB 3 Evaluates: SPI and SMBus/I2C-Compatible Parts Component Suppliers Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide Connectors P3 and P4 are designed to allow hardware compatibility with previous Maxim EV kit module designs. Headers P7 and P8 allow convenient probing of SMBus/I2C and SPI bus signals. Connector P5 is used during factory test to program the MAXQ2000 in-circuit using the JTAG interface. The connector pinout is compatible with the MAXQ2000 EV kit's MAXQ-JTAG-001 board. Platform Capabilities and Limitations General-Purpose Input and Output (GPIO) Pins LED1 is lit when VDD is powered. LED2, LED3, and LED4 are general-purpose software-controlled indicators, which also connect to GPIO lines. When driven as inputs, the output impedance should be less than 6000. SMBus/I2C/2-Wire Interface The CMAXQUSB module offers "bit-banged" I 2 C at 400kHz (full speed, the default) or 100kHz (slow speed). Optional user-switchable SCL/SDA pullup resistors are provided on-board. Your PC and its software limits attainable throughput. The SMBus/I 2 C bus runs in bursts at rated speed, but there is some variable "dead time" between transfers due to communications overhead. Properly written PC software can minimize this dead time but cannot completely eliminate it. SPI/3-Wire Interface The CMAXQUSB module offers SPI at up to 8MHz, using the default pin configuration. All four CPOL/CPHA modes are supported. Your PC and its software limits attainable throughput. The SPI bus runs in bursts at rated speed, but there is some variable "dead time" between transfers, due to communications overhead. Properly written PC software can minimize this dead time but cannot completely eliminate it. Power Supply The CMAXQUSB is powered by the host PC's universal serial bus (USB). The VDD system voltage can be configured for direct USB 5V power, 3.3V, or 2.5V using one of two on-board linear regulators. An optional external 9V DC plug-in transformer ("wall wart") can be connected for any EV kit board that requires this unregulated 9V DC power supply. Both the unregulated 9V DC and regulated VDD power-supply voltages are provided to the EV kit board on the 2 x 10 (P3) and 2 x 20 (P4) connectors. Current available to a companion EV kit is 80mA. During USB suspend, the FT232BM drives the MAX890 into a partially powered mode, bringing VDD up to approximately 1.8V. No commands are sent to the firmware during this mode, so there is no impact. However, custom designs not requiring USB suspend should consider removing the MAX890 to avoid this problem. Scripting and Data Acquisition The CMAXQUSB can store a script of commands in its internal memory to eliminate communication "dead time." A script may be repeated up to 256 times, but branching and decision making are not supported. A script may also have a maximum of 126 command/data bytes. Up to 1024 bytes of data may be collected. SMBus/I2C/2-Wire Bus Pullup Resistors SMBus/I2C requires a pullup resistor on both SCL and SDA. The CMAXQUSB provides 1.5k pullup resistors, enabled by setting both circuits of DIP switch SW1 "ON." If there are pullup resistors already on the bus, disable the CMAXQUSB's pullup resistors by setting both circuits of SW1 "OFF." Jumper Tables JUMPER JU1 VDD SELECT POSITION FUNCTION 2.5V VDD = 2.5V 3.3V VDD = 3.3V 5V VDD = 5V J2 (underneath SW1) Open Factory assembly option: replaces SW1-1. J3 (underneath SW1) Open Factory assembly option: replaces SW1-2. JU2 Closed Connects MAXQ2000 P6.2 to P6.3, supporting the Maxim 1-Wire(R) interface. Open JTAG connector P5 does not connect to the +5V supply. JU4 Closed JTAG connector P5 connects to the +5V supply. Open Optional higher voltage unregulated power supply is left unconnected; connector P1 is not used. JU5 Closed Enable optional unregulated power supply from P1 to connectors P3 and P4. 1-Wire is a registered trademark of Maxim Integrated Products, Inc. 4 CMAXQUSB User's Guide Connector P4 Connector P4 is a 40-pin, dual-row header that connects to SPI and 8-bit parallel kits. The pinout is compatible with Maxim's previous SPI solution, the 68HC16MODULE board. See Table 2. GPIO pins K1-K8 and K1'-K15' must be driven with a 4.7k or lower impedance source to turn around the bidirectional level translators. If designing a custom EV kit board, beware: the ground return system does not connect pin 20. Table 1. Connector P3 Description P3 PIN LABEL 1 VDD Power Supply. 2.5V, 3.3V, or 5V selected by CMAXQUSB VDD select jumper. FUNCTION 2, 4, 5, 6, 8, 10, 12, 14, 16, 18, 19 GND Ground Return 3 SDA SMBus/I2C SDA (Data) 7 SCL SMBus/I2C SCL (Clock) 9 K6 11 K1 General-Purpose I/O Designated as K6. Can be used for SMBus SUSPEND output. General-Purpose I/O Designated as K1. Can be used for SMBus ALERT input. 13 K2 General-Purpose I/O Designated as K2 15 K3 General-Purpose I/O Designated as K3 17 K4 General-Purpose I/O Designated as K4 20 +12V* Optional Unregulated Higher Voltage (7.5V to 16.5V) Power Supply. Enabled only if CMAXQUSB jumper JU5 is installed and closed, and if external power is applied through connector P1. *This +12V signal is provided only for legacy systems and is normally unpowered. Table 2. Connector P4 Description P4 PIN LABEL GPIO DESIGNATOR FUNCTION 1-4 GND -- Ground Return 5, 6 +12V* -- Optional Unregulated Higher Voltage (7.5V to 16.5V) Power Supply. Enabled only if CMAXQUSB jumper JU5 is closed, and if external power is applied through connector P1. 7, 8 VDD -- Power Supply. 2.5V, 3.3V, or 5V selected by CMAXQUSB VDD select jumper. 9 RD K13 when K0 = 1 Active-Low Read Strobe 10 WR K14 when K0 = 1 Active-Low Write Strobe 11 CS0 K15 when K0 = 1 12, 13, 14 -- -- Active-Low Memory Chip-Select Strobe No Connection. Reserved for additional memory chip-select strobes. 15 A0 K9 when K0 = 1 Memory Address LSB 16 A1 K10 when K0 = 1 Memory Address 17 A2 K11 when K0 = 1 Memory Address 18 A3 K12 when K0 = 1 Memory Address MSB 19 D0 K1 when K0 = 1 Memory Data LSB *This +12V signal is provided only for legacy systems and is normally unpowered. 5 Evaluates: SPI and SMBus/I2C-Compatible Parts Connector P3 Connector P3 is a 20-pin, dual-row header that connects to SMBus/I2C-based kits. The pinout is compatible with Maxim's previous SMBus/I 2 C solution, the MAXSMBus board. See Table 1. Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide Table 2. Connector P4 Description (continued) P4 PIN LABEL GPIO DESIGNATOR 20 D1 K2 when K0 = 1 Memory Data FUNCTION 21 D2 K3 when K0 = 1 Memory Data 22 D3 K4 when K0 = 1 Memory Data 23 D4 K5 when K0 = 1 Memory Data 24 D5 K6 when K0 = 1 Memory Data 25 D6 K7 when K0 = 1 Memory Data 26 D7 K8 when K0 = 1 27 K1 K1 General-Purpose I/O 28 K2 K2 General-Purpose I/O 29 K3 K3 General-Purpose I/O 30 K4 K4 General-Purpose I/O 31 K5 K5 General-Purpose I/O 32 K6 K6 General-Purpose I/O 33 K7 K7 General-Purpose I/O 34 K8 K8 General-Purpose I/O 35 MISO K11 SPI Master-In, Slave-Out (MISO) Data 36 MOSI K12 SPI Master-Out, Slave-In (MOSI) Data 37 SCLK K10 SPI Clock Memory Data MSB 38 CS K9 SPI Chip Select. Configurable active high or active low. 39 OW K15 General-Purpose I/O, Maxim 1-Wire Bus 40 -- -- No Connection *This +12V signal is provided only for legacy systems and is normally unpowered. Connector P5: JTAG Debug/Programming Interface Connector P5 is used during factory test to program the firmware into the MAXQ2000. This connector pinout is identical to the MAXQ2000 EV kit, MAXQ2000-KIT. See Table 3. Table 3. Connector P5 Description P5 PIN LABEL FUNCTION 1 TCK TCK to MAXQ2000 Test Access Port (P4.0) 2, 10 GND Ground Return 3 TDO TDO to MAXQ2000 Test Access Port (P4.3) 4 VDDIO 5 TMS 6 RESET 7 KEY No Connection. Pin is physically removed. 8 +5V Optional +5V Connection 9 TDI TDI from MAXQ2000 Test Access Port 6 MAXQ2000 VDDIO Power Supply TMS to MAXQ2000 Test Access Port (P4.2) Active-High Reset to MAXQ2000 Connector P6: Maxim 1-Wire Interface Although there are currently no mating EV kits that use this feature, the MAXQ2000's 1-Wire interface signal connects to header P6. See Table 4. Table 4. Connector P6 Description P6 PIN LABEL 1 VDD VDD Power Supply FUNCTION 2 OW Maxim 1-Wire Interface, Through Level Translator U6 3 GND Ground Return CMAXQUSB User's Guide For convenience, the SMBus/I2C interface signals are connected to labeled pins on header P7. See Table 5. Table 5. Connector P7 Description P7 PIN LABEL FUNCTION 1 VDD VDD Power Supply 2 SDA SMBus/I2C SDA (Data) 3 GND Ground Return 4 SCL SMBus/I2C SCL (Clock) Connector P8: SPI Test Points Detailed Description of Firmware The CMAXQUSB firmware was developed using the MAX-IDE assembly language development environment. Full source code is available at www.maxim-ic.com/tools/evkit under the project name CMAXQUSB Firmware. If designing a custom EV kit board requiring an interrupt service routine in custom firmware, GPIO signals K5-K8 are the suggested locations for the interrupt signal. The standard CMAXQUSB firmware does not service interrupts on any GPIO pins. Troubleshooting For convenience, the SPI interface signals are connected to labeled pins on header P8. See Table 6. Problem: Software reports it cannot find the board. * Verify that the CMAXQUSB power LED is lit. Table 6. Connector P8 Description * Verify that the USB cable is connected. * Verify that Windows plug-and-play detected the board. Bring up Control Panel -> System -> Device Manager, and look at what device nodes are indicated for the USB. If there is an "unknown device" node attached to the USB, delete it--this forces plug-andplay to try again. Problem: Unable to find SMBus/I2C device. P8 PIN LABEL 1 VDD FUNCTION VDD Power Supply 2 MISO Master-In, Slave-Out Data 3 MOSI Master-Out, Slave-In Data 4 SCLK SPI Clock 5 CS 6 GND Chip Select. Configurable active high or active low. Ground Return * Verify that the SCL and SDA signals are pulled up to VDD. CMAXQUSB DIP switch SW1 enables the onboard resistors. There must be pullup resistors somewhere on the bus. * If using wires to connect the CMAXQUSB to your target board, make certain that you have not swapped the SCL and SDA signals. Verify that the ground return is connected. 7 Evaluates: SPI and SMBus/I2C-Compatible Parts Connector P7: SMBus/I2C Test Points SEG25/P3.1 P4.1/TDI/INT9 P4.2/TMS P4.3/TDO P4.0/TCK/INT8 U1P40 U1P41 U1P42 U1P43 Figure 1a. CMAXQUSB Schematic (Sheet 1 of 4) 8 VDDIO HFXIN C24 0.1F C9 10pF 27 51 Y1 16MHz 32KOUT 29 30 31 32 33 COM0 26 SEG35/COM1 25 SEG33/COM3 SEG32 SEG34/COM2 24 23 22 GND GND SEG31/P3.7/INT7 SEG26/P3.2 SEG27/P3.3 RESET SEG24/P3.0 SEG23/P2.7 VDDIO VDDIO HFXOUT P6.5/TO/WKOUT P6.4/TOB/WKOUT P6.3/T2/OW_IN P6.2/T2B/OW_OUT P6.1/T1/INT13 P6.0/T1B/INT12 P5.7/MISO P5.6/SCLK P5.5/MOSI P5.4/SS P5.3/TX1/INT11 P5.2/RX1/INT10 32KIN RESET 14 15 U1P71 U1P70 VDDIO U1P00 VDDIO SEG21/P2.5 (EXPOSED PAD CONNECTS TO GND) SEG22/P2.6 17 28 42 U1P04 U1P03 U1P02 U1P01 MAXQ2000-RAX 12 13 16 U1P05 SEG19/P2.3 SEG20/P2.4 SEG30/P3.6/INT6 U1P26 11 U1 21 U1P25 9 10 SEG17/P2.1 SEG18/P2.2 20 U1P23 U1P24 7 8 SEG11/P1.3 SEG12/P1.4 SEG13/P1.5 SEG14/P1.6 SEG15/P1.7 SEG16/P2.0 U1P10 U1P07 U1P06 U1P12 U1P11 U1P21 U1P22 2 3 4 5 6 SEG29/P3.5/INT5 U1P14 U1P15 U1P16 U1P17 U1P20 1 SEG28/P3.4/INT4 U1P13 VDD 19 49 +2.5 C23 0.1F 68 SEG10/P1.2 67 SEG9/P1.1 66 SEG8/P1.0 65 SEG7/P0.7/INT3 64 SEG6/P0.6/INT2 63 SEG5/P0.5/INT1 62 SEG4/P0.4/INT0 61 SEG3/P0.3 60 SEG2/P0.2 59 SEG1/P0.1 58 SEG0/P0.0 57 VADJ 56 VLCD2 55 VLCD1 54 VLCD 53 P7.1/RXO/INT15 52 P7.0/TXO/INT14 +2.5V 18 Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide 50 48 47 46 45 44 43 41 40 39 38 37 36 34 35 C8 10pF U1P65 U1P64 U1P63 U1P62 U1P61 U1P60 U1P57 U1P56 U1P55 U1P54 U1P53 U1P52 Y3 32.768kHz OPEN R1 2.2k EEDATA 4 3 1 2 R14 10k D0 DI CS CLK C3 22F 5 GND U4 93C46 C7 22pF C6 22pF NC NC VCC EEDATA 7 6 8 R2 1.5k USBVCC R13 27 R12 27 C5 0.033F 6 27 5 4 8 7 C16 0.1F 29 TEST AGND EECS EESK EEDATA XTOUT XTIN RESET RSTOUT USBDM USBDP 3V3OUT AVVC 30 USBVCC 31 1 2 32 28 Y2 6MHz C12 0.1F R7 470 9 GND GND VCC 26 C14 0.1F 17 U2 FT232BM VCC 3 C13 0.1F PWREN SLEEP PWRCTL DCD RI TXDEN TXLED RXLED DTR DSR CTS RTS RXD TXD VCCIO 13 VDDIO 15 10 14 19 18 16 12 11 20 21 24 23 22 25 C15 0.1F U1P53 U1P64 U1P65 U1P52 U1P70 U1P71 R19 100k 8 FAULT IN 2 IN 1 5 7 6 C18 1F C17 1F +5V +5V U1P61 C10 0.1F VDDIO P3-3 SET ON/OFF GND 3 4 MAX890 OUT OUT 4 3 1 2 R18 4.7k 3 1 3 1 2 SHDN IN SHDN IN I/OVL2 VL I/OVCC2 GND J2 3 U9 VDD MAX8511 U3 MAX8511 U11 VCC GND OUT GND OUT I/OVL1 2 5 2 5 5 6 7 8 SW1 I/OVCC1 1 4 J3 R6 1.5k TRI-STATE MAX3373 C4 4.7F R5 1.5k +5V +2.5V +3.3V VDDIO C19 1F JU3 C2 22F U1P60 P3-7 VDDIO C11 0.1F VDD Evaluates: SPI and SMBus/I2C-Compatible Parts USB SERIES B P2-3 P2-4 P2-2 P2-1 P2 USBVCC CMAXQUSB User's Guide Figure 1b. CMAXQUSB Schematic (Sheet 2 of 4) 9 10 Figure 1c. CMAXQUSB Schematic (Sheet 3 of 4) U1P56 U1P55 U1P54 U1P57 U1P20 U1P25 U1P24 U1P23 U1P22 U1P21 U1P26 U1P62 U1P63 VDDIO VDDIO VDDIO JU2 7 3 4 5 6 2 1 10 9 4 5 6 7 8 3 2 1 C20 1F GND OVL1 IVL2 IVL3 IVL4 N.C. VL EN I/OVL8 I/OVL2 I/OVL3 I/OVL4 I/OVL5 I/OVL6 I/OVL7 VL I/OVL1 VDD IVCC1 OVCC2 OVCC3 OVCC4 N.C. VCC GND I/OVCC2 I/OVCC3 I/OVCC4 I/OVCC5 I/OVCC6 I/OVCC7 I/OVCC8 VCC I/OVCC1 TRI-STATE MAX3390 U10 MAX3001 U6 C25 0.1F VDDIO 1 8 9 12 11 10 13 14 11 12 14 13 17 16 15 VDDIO VDD P4-36 P4-38 P4-35 P4-37 P4-17 P4-16 P4-15 P4-9 P4-18 VDD U1P10 U1P15 U1P14 U1P13 U1P12 U1P11 C31 0.1F 10 VDDIO VDDIO 9 4 5 6 7 8 3 U1P16 U1P17 18 P4-39 3 C21 1F C32 0.1F EN I/OVL8 I/OVL2 I/OVL3 I/OVL4 I/OVL5 I/OVL6 I/OVL7 VL I/OVL1 VDD 2 P4-11 P4-10 2 P6 1 VDD 19 VDD C26 0.1F 20 VDDIO MAX3001 U7 C28 0.1F VDD R8 470 LED1 LED RED 11 12 14 13 17 16 15 18 19 20 C27 0.1F VDDIO GND I/OVCC2 I/OVCC3 I/OVCC4 I/OVCC5 I/OVCC6 I/OVCC7 I/OVCC8 VCC I/OVCC1 VDDIO LED2 LED RED R9 470 VDDIO P4-21 P4-20 P4-19 P4-23 P4-22 P4-25 P4-24 P4-26 U1P00 VDDIO R10 470 10 9 4 5 6 7 8 3 2 1 U1P01 VDDIO VDDIO VDDIO LED3 LED YELLOW U1P00 U1P05 U1P04 U1P03 U1P02 U1P01 U1P06 U1P17 C22 1F R11 470 LED4 LED GREEN EN I/OVL8 I/OVL2 I/OVL3 I/OVL4 I/OVL5 I/OVL6 I/OVL7 VL I/OVL1 VDD U1P02 MAX3001 U8 GND I/OVCC2 I/OVCC3 I/OVCC4 I/OVCC5 I/OVCC6 I/OVCC7 I/OVCC8 VCC I/OVCC1 C29 0.1F 11 12 14 13 17 16 15 18 19 VDD C30 0.1F 20 VDDIO P4-29 P4-28 P4-27 P4-31 P4-30 P4-33 P4-32 P4-34 Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide 1 P3-17 P4-30 VDD +3.3V JU1-5 JU1-3 JU1-1 JU1-6 JU1-4 JU1-2 JU1 2 x 3 HEADER P3-20 - - 4 6 +2.5V VDD +5V 2 3 1 +12V P1 OPEN P4-37 P4-39 P4-35 P4-31 P4-33 P4-23 P4-25 P4-27 P4-29 P4-15 P4-17 P4-19 P4-21 P4-9 P4-11 VDD +12V P4-35 P4-37 P4-39 P4-33 P4-29 P4-31 P4-21 P4-23 P4-25 P4-27 P4-11 P4-13 P4-15 P4-17 P4-19 P4-9 P4-7 P4-5 P4-1 P4-3 P4-16 P4-18 P4-20 P4-22 P4-24 P4-26 P4-28 P4-30 P4-32 P4-34 P4-36 P4-38 P4-40 P4-14 P4-10 P4-12 P4-6 P4-8 P4-2 P4-4 P4 2 x 20 HEADER P4-32 P4-34 P4-36 P4-38 P4-18 P4-20 P4-22 P4-24 P4-26 P4-28 P4-30 P4-16 P4-10 +12V VDD VDD P8-6 P8-5 P4-38 P8 1 x 6 HEADER P8-1 P8-2 P8-3 P8-4 VDD P7-4 P7-1 P7-2 P7-3 P4-35 P4-36 P4-37 P3-7 P3-3 P5-10 P5-6 P5-8 P5-4 P5-2 P7 1 x 4 HEADER P5-9 P5-5 P5-7 U1P42 U1P41 P5-1 P5-3 U1P40 U1P43 P5 2 x 5 HEADER JU4 RESET +5V VDDIO Evaluates: SPI and SMBus/I2C-Compatible Parts VDD P3-15 P4-29 P3-19 P3-13 P4-28 P3-10 P3-12 P3-14 P3-16 P3-18 P3-8 P3-7 P3-9 P3-11 P3-7 P4-32 P4-27 P3-2 P3-4 P3-6 P3-1 P3 2 x 10 HEADER D1 BRIDGE/DF005M P3-3 P3-5 - + P3-3 VDD C1 22F 3 JU5 +12V CMAXQUSB User's Guide Figure 1d. CMAXQUSB Schematic (Sheet 4 of 4) 11 Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide Figure 2. CMAXQUSB Component Placement Guide--Component Side (Top Silkscreen) 12 CMAXQUSB User's Guide Evaluates: SPI and SMBus/I2C-Compatible Parts Figure 3. CMAXQUSB Component Placement Guide--Solder Side (Bottom Silkscreen) 13 Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide Figure 4. CMAXQUSB PCB Layout--Component Side 14 CMAXQUSB User's Guide Evaluates: SPI and SMBus/I2C-Compatible Parts Figure 5. CMAXQUSB PCB Layout--Solder Side 15 Evaluates: SPI and SMBus/I2C-Compatible Parts CMAXQUSB User's Guide Revision History REVISION NUMBER REVISION DATE 2 12/10 DESCRIPTION Updated Y3 in Component List and Figure 1a PAGES CHANGED 2, 8 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 16 _______________Maxim Integrated Products, Inc. 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 (c) 2012 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.