OV07910-P10A - OmniVision Technologies, Inc.

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Advanced Information

Preliminary Datasheet

OV7910 Color CMOS NTSC/PAL CAMERACHIPTM

OV7411 B&W CMOS NTSC/PAL CAMERACHIPTM

Omni TM

ision

General Description

The OV7910 (color) and OV7411 (black and white) single

chip CMOS CAMERACHIPSTM are designed to provide a

high level of functionality in a small footprint package.

Both devices support NTSC/PAL composite video and

S-Video. The OV7910 imager also provides RGB and

YCbCr video signals, an d each device directly interfaces

with a VCR TV monitor or other 75 ohm terminated input.

A minimal number of external components are required to

complete a fully functional camera subsystem. The

OV7910/OV7411 video cameras require only a single

5-volt DC supply and have been designed for very low

power operation. These products are ideal for all

applications requiring a small footprint, low voltage, low

power and low cost color or black and white video camera.

Features

• Single chip 1/3" format video camera

• 628 x 582 pixels (PAL) or 510 x 492 pixels (NTSC)

• Composite video: NTSC, S-Video

• Component video RGB or YUV

• Sensitivity boost (+18 dB)/AGC ON/OFF

• Automatic exposure/gain/white balance

• External frame sync capability

• Aperture correction

• SCCB programmable controls: color saturation, gain,

brightness, contrast, white balance, exposure time

• Gamma correction (0.45) ON/OFF

• Low power consumption

• +5 volt only power supply

Ordering Information

Product Package

OV07910-C10A (Color, NTSC) CLCC-48

OV07910-C20A (Color, PAL) CLCC-48

OV07910-P10A (Color, NTSC) PLCC-48

OV07910-P20A (Color, PAL) PLCC-48

OV07411-C10A (B&W, NTSC) CL CC-48

OV07411-C20A (B&W, PAL) CLCC-48

OV07411-P10A (B&W, NTSC) PLCC-48

OV07411-P20A (B&W, PAL) PLCC-48

Applications

• Automotive

• PC Multimedia

•Toys

• Security

• Surveillance

• Video phones

• Video conference equipment

Key Specifications

Figure 1 OV7910/OV7411 Pin Diagram

Array Size PAL 628 x 582

NTSC 510 x 492

Power Supply 5 VDC + 5%

Power Requirements 200 mW

Image Area PAL 5.78 mm x 4.19 mm

NTSC 4.69 mm x 3.54 mm

Auto Electronic Exposure Time 1/60s to 1/1500s

Lens Size 1/3"

Min. Illumination

(3000K) OV7910 < 5 Lux

OV7411 < 1 Lux

S/N Ratio 40 dB

Pixel Size 9.2 µm x 7.2 µm

Fixed Patter n Noise < 0.03% VPP

Package Dimensions .560 in. x .560 in.

36FSI

37PWDN

38AMOD0

39AMOD1

HSHP

41DEVDD

42DEGND

VAXPXO

32VHSYNC/MIR

33FSO/VSFR

34FODD/SCCB_E

35PALSW

13 EVDD

12 SMTAWB

11 RSVD11

10 HSAT

9CEXP

8 RGSW

7 AVDD

18 OVDD

17 RVCVO

16 GYYO

15 BVCO

14 EGND

VREF4

SGND

SVDD

VcBRT

BPAVE

RSVD5

AGND

SCL

SDA

VREF1

VREF2

VREF3

OV7910/OV7411

DVDD

PAL

XCLK2

XCLK1

BKLT

HGAIN

G2X

AWBTM

AWBEN

AGCEN

GAMMA

DGND

2Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

Functional Description

This section describes the various functions of the OV7910/OV7411. Refer to Figure 2 for the functional block diagram of the

OV7910/OV7411.

Figure 2 Functional Block Diagram

Clock/Timing Generator and Control Logic

Image Array

(628 X 582)

Row

Select

SCCB

Interface

Gain

Control

SCCB_E

SCL

SDA

ASP

Control

CVO

Analog Signal

Processor

(ASP)

XCLK1

XCLK2

PWDN

FSI

BKLT

VcBRT

GAMMA

VHSYNC

VAXPXO

FODD

AMP

Control

Bank

Column Sample/Hold

Functional Description

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Video Standards

Two TV standards are implemented and available as

output in the OV7910/OV7411 imaging devices,

NTSC (M) and PAL (B). Table 1 shows how to configure

the standard of choice. Note that the accuracy and

stability of the crystal clock frequency is important to avoid

unwanted color shift in TV video system.

Video Formats

The OV7910/OV7411 image sensors support a variety of

formats including Composite (CVBS), S-Video (YO/CO),

RGB components, and YUV components. Composite and

S-Video signals are generated from the internal TV

encoder and RGB/YUV outputs are generated form the

color matrix prior to entering the encoder. The image

sensor utilizes the RG/BG Bayer pattern, sending raw

pixel data through the color ma trix, creati ng RGB or YUV

component signals. At the same time, YUV signals are

also processed to generate both composite and S-video

signals. Note that color format configuration is valid only

for the OV7910 image sensor.

Composite and S-Video

The Composite/S-Video format is the power-up default

configuration for the OV7910/OV7411 image sensors.

AMOD0 (pin 38) and AMOD1 (pin 39) select composite

and S-video formats. In this configuration, RVCVO

(pin 17) outputs the YO co mponent of the S-video signa l

and BVCO (pin 15) outputs the CO component. Table 2

summarizes the available formats and the settings

required on the appropriate pins.

RGB Format

Setting AMOD0 = 1 (with AMOD1 = x) selects the RGB

format. In this configuration, RVCVO outputs the RED

component, GYYO outputs the GREEN component and

BVCO provides the BLUE component.

Table 1 Standard Configurations

Standard PAL Setting

(Pin 24) Clock Comments

NTSC 0 14.31818 MHz Clock in =

4 x FSC

PAL 1 17.734475 MHz Clock in =

4 x FSC

YUV Format

Setting AMOD0 = 0 and AMOD1 = 1 configures the

OV7910/OV7411 sensors to operate in YUV mode or

B&W mode. In this configuration, GYYO outputs the Y

component, RVCVO provides the Cr component, and

BVCO outputs the Cb component. On the OV7411 image

sensor, only the GYYO (Y component) output is valid.

Configuring the OV7910/OV7411

The OV7910/OV7411 sensors are designed for

ease-of-use in many standalone applications. Most of the

on-chip functions are configurable by connecting

appropriate pins high (logic "1") or low (logic "0") using a

10KΩ resistor. The image sensor reads the input pins at

power up which enable user-defined default

configurations.

The OV7910/OV7411 sensors also contain a Serial

Camera Control Bus (SCCB) interface for programmable

access to all register functions. For further details on the

SCCB port, see “Serial Camera Control Bus (SCCB)” on

page 4. By default, the SCCB interface is disabled. To

enable the SCCB interface for controlling the sensor, a

10KΩ. pull-up resistor must be connected to the

FODD/SCCB_E pin (pin 34). With the FODD/SCCB_E pin

pulled high at power-up, the OV7910/OV7411 image

sensors will enable the SCCB port for access.

White Balance

The White Balance function in the OV7910/OV7411

image sensor is used to adjust and calibrate the image

device sensitivity on the primary (RGB) colors to match

the color cast of the light source. The Auto White Balance

(AWB) can be enabled or disabled through either the

AWBEN pin (pin 29) or through the SCCB port. If AWB is

enabled, the image sensors continuously perform white

balancing. A fast or slow mode of white balancing may be

user-selected through the AWBTM pin (pin 30). Fast A WB

updates color every 2 fields while slow AWB updates

every 16 fields.

By using the SCCB port, the color temperature may be

further fine tuned to the requirement of the application.

Note that the "blue" (BLUE and BBS registers) a nd "red"

(RED and RBS registers) bias control are only available

through the SCCB port. This function ena bles the user to

define a "cooler" or "warmer" background for image

capture.

4Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

Table 2 Video Format Options

Format Type RVCVO (Pin 17) GYYO (Pin 16) BUCO (Pin 15) Pin Settings

Composite/S-Video CVBS YO CO AMOD0 = 0, AMOD1 = 0

RGB Component RED GREEN BLUE AMOD0 = 1, AMOD1 = x

YUV Component Cr Y Cb AMOD0 = 0, AMOD1 = 1

Black and White — Y —

AMOD0 = 0, AMOD1 = 1

Note: Pins 15 and 17 are undefined

in the OV7411 sensor.

Additional Picture Control

A number of functions/registers are available which

enable the user to configure OV7910/OV7411 image

capturing parameters. These fu ncti ons i nclude Automatic

Gain Control (AGC), AGC Gain, Automatic Exposure

Control (AEC), GAMMA, and Backlight control.

AGC Gain can be set at 2x normal by programming pin 20,

HGAIN. This function may be configured through the

SCCB port as well. GAMMA (pin 27) can be used to set

the color correction. BKLT (pin 21) controls how the

OV7910/OV7411 image sensors manage backlight

conditions. These functions may also be controlled by the

SCCB interface.

At power up, AGC and AEC are enabled. AGC can be

disabled at power-up by configuring the AGCEN pin

(pin 28) as required. AEC cannot be enabled/disabled

externally and must be programmed through the SCCB

port.

Other Image Sensor Control Functions

Additional programmable functions for OV7910/OV7411

image sensors include sharpn ess adjustment, brightness

level fine tune, color saturation adjustment, hue

adjustment. All these functions (except for power down)

can be configured by either an external pin or through the

SCCB interface.

Serial Camera Control Bus (SCCB)

Many of the functions and configuration registers in the

OV7910/OV741 1 image sensors are available through the

SCCB interface. The SCCB port is enabled by asserting

the SCCB_E line (pin 34, see “FODD/SCCB_E” on

page 8) through a 10KΩ resistor to VDD. When the SCCB

capability is enabled (SCCB_E = 1), the OV7910/OV741 1

image sensor operates as a slave device that supports up

to 400 kbps serial transfer rate using a 7-bit address/data

transfer pr otocol.

NOTE: When the SCCB interface is enabled, the

OV7410/OV7411 will ou tput in co lor by default. To output

in B&W mode, set register COMB[1:0] = 10b.

SCCB Protocol Format

In SCCB operation (see Figure 5), the master must

perform the following operations:

• Generate the Start/Stop condition

• Provide the serial clock on SCL

• Place the 7-bit slave address (RW bit) and the 8-bit

sub-address on SDA

The receiver must pull down SDA during the

acknowledgement bit time. During the write cycle, the

OV7910/OV7411 device returns the acknowledgement

and, during the read cycle, the master returns the

acknowledgement, indicating to the slave that the read

cycle can be terminated. Note that the restart feature is

not supported here.

Within each byte, the MSB is transferred first. The

read/write control bit is the LSB of the first byte. Standard

SCCB communications require only two pins, SCL and

SDA. SDA is configured as an open drain for bidirectional

purposes. A HIGH to LOW transition on the SDA while

SCL is HIGH indicates a START condition. A LOW to

HIGH transition on th e SDA while SCL is HIGH indicates

a STOP condition. Only a master can generate

START/STOP conditions.

Except for these two special conditions, the protocol that

SDA remain stable during the HIGH period of the clock,

SCL. Each bit is al lowed to change state only when SCL

is LOW (see Figure 3 and Figure 4).

The OV7910/OV741 1 SCCB interface supports multi-byte

write and multi-byte read. The master must supply the

sub-address in the write cycle, but not in the read cycle.

Therefore, the OV7910/OV7411 takes the read

sub-address from the previous write cycle. In multi-byte

write or multi-byte read cycles, the sub-address

automatically increments after the first data byte so that

Functional Description

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continuous locations can be accessed in one bus cycle. A

multi-byte cycle overwrites its original sub-address;

therefore, if a read cycle immed iately follows a multi-byte

cycle, a single byte write cycle that provides a new

address must be inserted.

The OV7910/OV7411 supports a single sl ave ID. The ID

is preset to 80 for write and 81 for read.

In the write cycle, the second byte in the SCCB is the

sub-address for selecting the indivi dual on-chip regi sters,

and the third byte is the data associated with this register.

Writing to the unimplemented sub-address is ignored.

In the read cycle, the second byte is the data associated

with the previously stored sub-address. Reading of an

unimplemented sub-address returns unknown.

Figure 3 Bit Transfer on the SCCB

DATA DATA

SDA

SCL

STABLE CHANGE

ALLOWED

Figure 4 Data Transfer on the SCCB

Figure 5 SCCB Protocol Format

SDA

SCL

SLAVE ID SUB-ADDRESS DATA

S P

AAA

RW SUB-ADDRESS (8-BIT) DATA (8-BIT)SLAVE (7-BIT)S A A A P

STOP

ACKACKLSB=0MSB

START

FIRST BYTE SECOND BYTE THIRD BYTE

MASTER TRANSMIT, SLAVE RECEIVE (WRITE CYCLE)

RW SUB-ADDRESS (8-BIT)SLAVE (7-BIT)S A A P

STOP

ACKLSB=0MSB

START

FIRST BYTE SECOND BYTE

MASTER TRA N SM I T, SLAV E R E CEIVE (DUMMY WRITE CY C LE )

RW DATA (8-BIT) DATA (8-BIT)SLAVE (7-BIT)S A A 1 P

STOP

NO ACK IN

ACKLSB=1MSB

START

FIRST BYTE SECOND BYTE THIRD BYTE

MASTER RECEIVE, SLAVE RECEIVE (READ CYCLE) LAST BYTE

– SLAVE TRANSMIT

– MASTER TRANSMIT

– MASTER INITIATE

S – START CONDITION

A – ACKNOWLEDGE BIT

P – STOP CONDITION

SLAVE ID – 1000000X

X – RW BIT, 1: READ, 0: WRITE

6Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

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Pin Description

Table 3 Pin Description

Number Name Pin

Type Function/Description

01 SGND VIN Analog ground

02 SVDD VIN Analog Power (+5 VDC)

03 VcBRT 1.2V Image brightness adjustment - default set by internal resistor (~50KΩ).

Default may be changed by applying an external bia s to this pin.

04 BPAVE Function

(default = 0)

Internal 3-point average selection

0: Use internal 3-point averaging

1: Bypass internal 3-point averaging

05 RSVD5 VREF Internal reference

06 AGND VIN Analog ground

07 AVDD VIN Analog power (+ 5 VDC)

08 RGSW Function

(default = 0)

"Raw" data pixel selection

0: Select "raw" pixel data

1: Select non-"raw" pixel dat a

09 CEXP Function

(default = 0)

Central exposure selection

0: Select normal mode

1: Select central exposure mode

10 HSAT Function

(default = 0)

Color saturation selection

0: Select normal color saturation

1: Select increase color saturation by 25%

11 RSVD11 NC Reserved

12 SMTAWB Function

(default = 0)

Automatic White Balance (AWB) smart mode selection

0: Disable smart mode

1: Enable smart mode - count pixels which contain a luminance

signal between 10-80% of maximum value

13 EVDD VIN Analog power (+5 VDC)

14 EGND VIN Analog ground

15 BVCO Output

Video output - output format determined by pin 38 (AMOD0) and pin 39

(AMOD1)

AMOD0 AMOD1 Format Output Component

0 0 Composite S-video CO channel

0 1 YUV or B&W Cb component

1 0 RGB Blue component

1 1 RGB Blue component

16 GYYO Output

Video output - output format determined by pin 38 (AMOD0) and pin 39

(AMOD1)

AMOD0 AMOD1 Format Output Component

0 0 Composite S-video YO channel

0 1 YUV or B&W Y component

1 0 RGB Green component

1 1 RGB Green component

Pin Description

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17 RVCVO Output

Video output - output format determined by pin 38 (AMOD0) and pin 39

(AMOD1)

AMOD0 AMOD1 Format Output Component

0 0 Composite CVBS

0 1 YUV or B&W Cr component

1 0 RGB Red component

1 1 RGB Red component

18 OVDD VIN Analog power for video output (+5 VDC)

19 G2X Function

(default = 0)

Enhanced gain selection for Auto matic Gain Control (AGC)

0: Select normal AGC gain (no additional 2x gain)

1: Select additional 2x AGC gain

20 HGAIN Function

(default = 0)

AGC gain range selection

0: Select normal AGC range

1: Select AGC range x2 (4x to 8x)

21 BKLT Function

(default = 0)

Backlight selection

0: Disable backlight compensation

1: Enable backlight compensation

22 XCLK1 Input Crystal clock input - frequency is 4 x FSC to meet NTSC/PAL subcarrier

standards

23 XCLK2 Output Crystal clock output

(4 x FSC for NTSC = 14.318181 MHz, 4 x FSC for PAL = 17.73265 MHz)

24 PAL Function

(default = 0)

NTSC/PAL selection

0: Select NTSC mode

1: Select PAL mode

25 DVDD VIN Digital power

26 DGND VIN Digital ground

27 GAMMA Function

(default = 1)

GAMMA selection

0: Disable GAMMA correction

1: Enable GAMMA correction

28 AGCEN Function

(default = 1)

AGC selection

0: Disable AGC

1: Enable AGC

29 AWBEN Function

(default = 1)

Automatic White Balance (AWB) selection

0: Disable AWB

1: Enable AWB

30 AWBTM Function

(default = 0)

AWB speed selection

0: Select normal AWB

1: Select "fast" AWB

31 VAXPXO Output Valid pixel detect output - CLK is asserted on this pin during active image

period

32 VHSYNC/MIR Output/Function

(default = 0) Vertical/horizontal sync output - adding a pull-up resistor on this pin

enables mirror image

Table 3 Pin Description (Continued)

Number Name Pin

Type Function/Description

8Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

33 FSO/VSFR Output/Function

(default = 0) Vertical field/frame sync output - (default = field sync) adding a pull-up

resistor on this pin enables frame sync

34 FODD/SCCB_E Output/Function

(default = 0) Even/Odd field flag - adding a pull-u p resistor on this pin enables SCCB

control

35 PALSW Outp ut PAL switch clock output

36 FSI Input Field sync input

37 PWDN Function Power down mode selection

0: Disable power down mode

1: Enable power down mode

38 AMOD0 Function

Mode output selection - determined with pin 39 (AMOD1)

AMOD0 AMOD1 Mode

0 0 YO/CO/CVO

01 RGB

10 Y/U/V

11 RGB

39 AMOD1 Function

Mode output selection - determined with pin 38 (AMOD0)

AMOD0 AMOD1 Mode

0 0 YO/CO/CVO

01 RGB

10 Y/U/V

11 RGB

40 HSHP Function Sharpness level selection

0: Select normal sharpness

1: Select x2 sharpness

41 DEVDD VIN Analog power

42 DEGND VIN Analog ground

43 SCL I/O SCCB control

44 SDA I/O SCCB data/address

45 VREF1 VREF Internal reference - must be decoupled with 0.1 µF capacitor to analog

ground

46 VREF2 VREF Internal reference - must be decoupled with 0.1 µF capacitor to analog

ground

47 VREF3 VREF Internal reference - must be decoupled with 0.1 µF capacitor to analog

ground

48 VREF4 VREF Internal reference - must be decoupled with 0.1 µF capacitor to analog

ground

Table 3 Pin Description (Continued)

Number Name Pin

Type Function/Description

Electrical Characteristics

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Electrical Characteristics

Table 4 Operating Conditions

Parameter Min Max Unit

Operatin g te mperature 0 40 °C

Storage temperature -40 125 °C

Operating humidity TBD TBD

Storage humidity TBD TBD

Table 5 Electrical Characteristics (0°C to 70°C, all voltages referenced to GND)

Symbol Parameter Min Typ Max Unit

Supply

VDD Supply voltage (VDD, DVDD) 4.75 5.0 5.25 V

VDDO Supply voltage (DOVDD) 3 5.25 V

IDD1 Supply current in VDDs 25 mA

IDD2 Supply current in DOVDD with 50 pF load at

digital output TBD mA/MHz

IDD3 Standby supply current (CMOS level at inputs) 100 µA

Digital Input Pin

VIL Input voltage LOW 0.8 V

VIH Input voltage HIGH 2.0 V

CIN Input capacitor 10 pF

tr, t fDigital input rise/fal l time 25 ns

Digital Output - Standard Load 50 pF, 1.2 KΩ to 3.0 V

VOH Output voltage HIGH 2.4 V

VOL Output voltage LOW 0.6 V

Video Bus - at 60Hz fps

tPCLK PCLK cycle time 74 ns

tPPCLK pulse width 32 ns

tDS Data to PCLK setup time tP - 10 ns

tDH Data to PCLK hold time tP - 10 ns

SCCB

fscl SCL clock frequency 400 KHz

tfSDA fall time 20 + 0.1Csda 300 ns

tidle Bus idle time 1.3 µs

10 Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

thdsta START hold time 0.6 µs

tstps STOP setup time 0.6 µs

tds SDA setup time 100 µs

tdh SDA hold time 0 µs

Clock Input/Crystal Oscillator

fOSC Resonator frequency TBD TBD TBD MHz

Load capacitor 10 pF

Parallel resistance 1M Ω

Rise/fall time for external clock input 5 ns

Duty cycle for external clock input 40 60 %

Miscellaneous T iming

tSYNC External FSI cycle time 2 frame

tPU Chip power up time 100 µs

tPD Power up delay time 10 µs

tPZ Power up low-z delay 1000 ns

VTO Analog Video Output Parameters

VTO-P Video peak signal level 2.8 V

VTO-B Video black signal level 0.7 V

VSYNC Y video sync pulse amplitude 0.7 V

Ro Video output load 75 Ω

tHHorizontal line width pclk

tHSYNC Horizontal sync wid th pclk

tHBK Horizontal blank width pclk

tVVertical field width 262.5 tH

tVSYNC Vertical sync wid th tH

tVF1 Field 1 vertical front equalization width tH

tVB1 Field 1 vertical back equalization width tH

tVBK1 Field 1 blank line outside equalization region tH

tVF2 Field 2 vertical front equalization width tH

tVB2 Field 2 vertical back equalization width tH

tVBK2 Field 2 blank line outside equalization region tH

Table 5 Electrical Characteristics (0°C to 70°C, all voltages referenced to GND)

Symbol Parameter Min Typ Max Unit

Electrical Characteristics

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Table 6 Sensor Characteristics (temp 27°C, illumination 3200°K, AEC maximum, AGC off, γ = 1)

Parameter Value Unit Description

Dark current 50 mV/sec Photo diode leakage induced signal - the

leakage roughly doubles for every 10°C

temperature rise

Sensitivity 1 V/lux.sec

Random noise TBD Measured rms value at 75% signal

illumination level versus full scale

Fix pattern noise < 0.03 % Measured rms value at 75% signal

illumination level versus full scale

Smear < 0.01 %

Blooming TBD %

Uniformity 1 % Average signal variation over 9 equal size

blocks at 50% signal illumination level

12 Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

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Timing Specifications

Figure 6 Video Timing Diagram

(B) VERTICAL TIMING

(A) HORIZONTAL TIMING

tVSYNC

1234525524523 261 262 263 264 265 266 267

VSYNC

HREF

CHSYNC

(Composite)

(H-Sync)

HREF

CHSYNC

VTO

tHBK

tSYNC

tHREFD

tHREF

Timing Specifications

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OV7910/OV7411 Light Response

Figure 7 OV7910/OV7411 Light Response

14 Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

Table 7 pro vides a list and description of the Device Control registers contained in the OV7910 /OV7411. The device slave

addresses are 80 for write and 81 for read.

Table 7 Device Control Register List

Address

(Hex) Register

Name Default

(Hex) R/W Description

00 GAIN 00 RW

AGC Gain Setting

Bit[7]: Reserved

Bit[6:0]: Storage for current AGC gain setting

This register is updated automatically. If AGC is enabled, the internal

control stores the optimal gain value in this register. If AGC is not

enabled, a "00" is stored in this register.

01 BLUE 80 RW

Storage for the current blue channel setting for whi te balance control

Bit[7]: Adjustment dire cti o n

0: Decrease gain

1: Increase gain

Bit[6:0]: Blue channel gain balance value

02 RED 80 RW

Storage for the current red channel setting for white balance control

Bit[7]: Adjustment dire cti o n

0: Decrease gain

1: Increase gain

Bit[6:0]: Red channel gain balance value

03 SAT D0 RW Saturation Control

Bit[7:0]: Saturation adjustment

• Range: [00] lowest to [FF] highest

04 CNT 00 RW Contrast Control

Bit[7:0]: Contrast adjustment

• Range: [00] lowest to [FF] highest

05 BRT 80 RW Brightness Control

Bit[7:0]: Brightness adjustment

• Range: [00] lowest to [FF] highest

06 RSVD XX – Reserved

07 BBS 20 RW

B Channel Offset

Bit[7:6]: Reserved (BBS[7:6] = 00)

Bit[5:0]: Blue channel bias value

This value defines the fine tune adjustment for the blue tint in the white

balance control. This register is the manual control portion of the AWB

control.

08 RBS 20 RW

R Channel Offset

Bit[7:6]: Reserved (RBS[7:6] = 00)

Bit[5:0]: Red channel bias value

This value defines the fine tune adjustment for the red tint in the white

balance control. This register is the manual control portion of the AWB

control.

09-0F RSVD XX – Reserved

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10 VER 03 R Version number

11 MIDH 7F R Manufacturer ID Byte -- High (Read only = 0x7F)

12 MIDL A2 R Manufacturer ID Byte – Low (Read only = 0xA2)

13 AEC 82 RW Exposure Control Value

Bit[7:0]: Manual exposure setting

• Range: [00] lowest to [82] highest

14 COMA 9F RW

Common Control A

Bit[7]: CEXP

0: Selects central exposure

Bit[6:4]: Reserved

Bit[3]: GAMMA selection

0: Select GAMMA = 1.0

1: Select GAMMA = 0.45

Bit[2]: AGC enable

1: Enable auto gain control

Bit[1]: AWB enable

1: Enable auto channel balance

Bit[0]: AEC enable - if AEC[0] = 1, AEC[7:0] (register 0x13) is

updated automatically. If AEC[0] = 0, AEC[7:0] remains

unchanged.

0: Disable

1: Enable

15 COMB 00 RW

Common Control B

Bit[7]: SRST

1: Initiates soft reset. All registers are set to default

values after which the chip resumes normal

operation.

Bit[6]: Mirror image selection

0: Normal

1: Output mirror image

Bit[5]: VSFR

0: Enables field sync output to VSYNC (pin 32)

1: Enables frame sync output to VSYNC

Bit[4]: B acklight exposure mode selection

0: OFF

1: ON

Bit[3]: FREX

0: Exposure and gain values automatically updated

1: Disable update of expo sure and gain values

Bit[2]: HGAIN, AGC gain range selection

0: AGC normal range

1: Enable AGC 2x gain boost

Bit[1:0]: AMOD - selects video output modes

00: S-Video and CVBS

01: RGB

10: YUV (for OV7410/OV741 1, bit[1:0] must be set to 10)

11: RGB

Table 7 Device Control Register List

Address

(Hex) Register

Name Default

(Hex) R/W Description

16 Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

16 COMC 20 RW

Common Control C

Bit[7]: Smart AWB selection

0: Disabled SMTAWB

1: Enables SMTAWB

Bit[6]: Reserved

Bit[5]: Automatic level control (ALC)

0: Disabled

1: Enabled

Bit[4:0]: Reserved

17 COMD 34 RW

Common Control D

Bit[7:4]: Reserved

Bit[3]: BPSHP

0: Enables sharpness control

1: Disables sharpness control

Bit[2]: Reserved

Bit[1]: AWBTM

1: Selects "fast" AWB update

Bit[0]: Reserved

18-1C RSVD XX – Reserved

1D COME 34 RW

Common Control E

Bit[7]: Reserved

Bit[6]: G2XA

1: Enables additional 2x gain (not controlled by AGC)

Bit[5:0]: Reserved

1E-3B RSVD XX – Reserved

NOTE: All other registers are factory-reserved. Please contact OmniVision Technologies for reference register settings.

Table 7 Device Control Register List

Address

(Hex) Register

Name Default

(Hex) R/W Description

Package Specifications

Version 1.6, Dece mb er 1, 20 03 Proprietary to OmniVision Technologies 17

Omni ision

Package Specifications

The OV7910/OV7411 uses 48-pin ceramic package. Refer to Figure 8 for ceramic package information and Figure 9 for the

array center on the chip.

Figure 8 OV7910/OV7411 Package Specifications

Table 8 OV7910/OV7411 Package Dimensions

Dimensions Millimeters (mm) Inches (in.)

Package Size 14.22 + 0.30 / -0.13 SQ .560 + .012 / - .005 SQ

Package Height 2.23 + 0.28 .088 + .011

Substrate Height 0.51 + 0.05 .020 + .002

Cavity Size 8.89 + 0.13 SQ .350 + .005 SQ

Castellation Height 1.14 + 0.13 .045 + .005

Pin #1 Pad Size 0.51 x 2.16 .020 x .085

Pad Size 0.51 x 1.02 .020 x .040

Pad Pitch 1.02 + 0.08 .040 + .003

Package Edge to First Lead Center 1.524 + 0.25 / -0.13 .06 + .010 / - .005

End-to-End Pad Center-Center 11.18 + 0.13 .440 + .005

Glass Size 12.40 + 0.10 SQ / 13.00 + 0.10 SQ .488 + .004 SQ / .512 + .004 SQ

Glass Height 0.55 + 0.05 .022 + .002

.022 ± .004

.001 to .005

TYP

.030 ± .002

.065 ± .007

.088 ± .011

.020 ± .002

.015 ± .002 .06 + .010 / - .005

.085 TYP

R .0075

(48 PLCS)

R .0075

(4 CORNERS)

.040 TYP

.040 ± .003

3142

.350 SQ ± .005

.430 SQ ± .005

.032 MIN

48 1

31 42

.440 ± .005

.560 SQ + .012 / - .005

Pin 1

Index

.020 TYP

.488

.012 TYP

REF

± .004

18 Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

Mask Specifications

Figure 9 OV7910/OV7411 Mask Drawing

Glue Side

14.224

9.7453.745

9.590

4.590

6.000

5.000

R 0.500

NOTE:

Due to a stray light path in the OV7910, you may encounter situations where you will see a slight red flare

and or red flashes in the image. This behavior will be present in conditions of strong scene lighting such as

outdoors and with wider than standard FOV lenses. The remedy for this behavior is to shield the die from

strong oblique light rays by applying a mask to the window of the chip. Construct the mask to the dimensions

as shown in Figure 9 above using some opaque self-adhesive material. To apply the mask on the top window,

ensure that you have the pin one notch on th e mask aligned with pin one on the bottom of the package and

that the edges of the mask are even with the edges of the top window glass. This will ensure proper

alignment of the opening in the mask with the photo array on the die. Lightly adhere the mask in place and

double check the alignment before applying firm even pressure to the adhesive to achieve a permanent bond.

Package Specifications

Version 1.6, Dece mb er 1, 20 03 Proprietary to OmniVision Technologies 19

Omni ision

Sensor Array Center

Figure 10 OV7910/OV7411 Sensor Array Center

Sensor

Array

Package Center

(0,0)

Array Center

(367µm, 22µm)

Die shift (x,y) = 0.15 mm (6 mils) max.

Die tilt = 1 degrees max.

Die rotation = 3 degrees max.

Positional Tolerances

NOTES: 1. This drawing is not to scale and is for reference only.

2. As most optical assemblies invert and mirror the image, the chip is typically mounted

with pin one oriented down on the PCB.

Die

Scan Origin

20 Proprietary to OmniVision Technologies Version 1.6, December 1, 2003

OV7910/OV7411 CMOS NTSC/PAL CAMERACHIP™Omni ision

Note:

• All information shown herein is current as of the revision and publication date. Please refer

to the OmniVision web site (http://www.ovt.com) to obtain the current versions of all

documentation.

• OmniVision Technologies, Inc. reserves the right to make changes to their products or to

discontinue any product or service without further notice (It is advisable to obtain current pr oduct

documentation prior to placing orders).

• Reproduction of information in OmniVision product documentation and specifications is

permissible only if reproduction is without alteration and is accompanied by all associated

warranties, conditions, limitations and notices. In such cases, OmniVision is not responsible

or liable for any information reproduced.

• This document is provided with no warranties whatsoever, including any warranty of

merchantability, non-infringement, fitness for any particular purpose, or any warranty

otherwise arising out of any proposal, specification or sample. Furthermore, OmniVision

Technologies Inc. disclaims all liability, including liability for infringement of any proprietary

rights, relating to use of information in this document. No license, expressed or implied, by

estoppels or otherwise, to any intellectual property rights is granted herein.

• ‘OmniVision’, ‘CameraChip’ are trademarks of OmniVision Technologies, Inc. All other trade,

pr oduct or service names refer enced in this release may be trademarks or r egister ed trademarks of

their respective holders. Third-party brands, names, and trademarks are the property of their

respective owners.

For further information, please feel free to contact OmniVision at info@ovt.com.

OmniVision Technologies, Inc.

1341 Orleans Drive

Sunnyvale, CA USA

(408) 542-3000