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Details, datasheet, quote on part number:OV7910P
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Datasheet text preview:
Omni
General Description
ision
TM
Advanced Information Preliminar y Datasheet OV7910 Color CMOS NTSC/PAL CAMERACHIPTM OV7411 B&W CMOS NTSC/PAL CAMERACHIPTM Applications
· · · · · · · Automotive PC Multimedia Toys Security Surveillance Video phones Video conference equipment
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, and 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.
Key Specifications
Array Size PAL 628 x 582 NTSC 510 x 492 Power Supply 5 VDC + 5% Power Requirements 200 mW PAL 5.78 mm x 4.19 mm 4.69 mm x 3.54 mm 1/60s to 1/2000s 1/3" < 5 Lux < 1 Lux 40 dB 9.2 µm x 7.2 µm < 0.03% VPP .560 in. x .560 in.
Features
· · · Single chip 1/3" format video camera PAL with 628 x 582 pixels or NTSC with 510 x 492 pixels. 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 Brightness Contrast White balance Exposure time
VAXPXO VHSYNC/MIR FSO/VSFR FODD/I2CEN PALSW FSI PWDN AMOD0 AMOD1 HSHP DEVDD 31 32 33 34 35 36 37 38 39 40 41 42
NTSC Auto Electronic Exposure Time Lens Size OV7910 Min. Illumination (3000K) OV7411 S/N Ratio Pixel Size Fixed Pattern Noise Package Dimensions
Image Area
Figure 1 OV7910/OV7411 Pin Diagram
G AM M A A W BT M A W BE N A GC EN X CL K 2 X CL K 1 H GA IN 20 D GN D D VD D B KL T G 2X 19 18 17 16 15 14 OVDD RVCVO GYYO BVCO EGND EVDD SMTAWB RSVD11 HSAT CEXP RGSW AVDD 13 12 11 10 9 8 7 43 SC L 44 S DA 45 V RE F1 46 V R EF 2 47 V RE F 3 48 V RE F4 1 SG ND 2 S VD D 3 Vc BR T 4 BP AV E 5 R SV D5 6 AG ND P AL 24
30
29
28
27
26
25
23
22
21
Gain Gamma correction (0.45) ON/OFF Low power consumption +5 volt only power supply
OV7910/OV7411
Ordering Information
Product OV7910 (Color, NTSC/PAL) OV7411 (B&W, NTSC/PAL) Version 1.4, March 21, 2003 Package CLCC-48 CLCC-48
DEGND
Proprietary to OmniVision Technologies
1
OV7910/OV7411
CMOS NTSC/PAL CAMERACHIPTM
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
AMP Column Sample/Hold
Analog Signal Processor (ASP)
CVO
Row Select
Image Array (628 X 582)
Gain Control
ASP Control
Clock/Timing Generator and Control Logic
Control Register Bank
I2 C Interface
PW DN
G AM M A
V HSY NC
V AXP XO
XCL K1
XCL K2
VcBRT
F O DD
F SI
B KLT
2
Proprietary to OmniVision Technologies
Version 1.4, March 21, 2003
I 2 CE N
S DA
SCL
Omni
ision
Functional Description
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.
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.
Table 1
Standard
Standard Configurations
PAL Setting (Pin 24) 0 1 Clock Comments Clock in = 4 x FSC Clock in = 4 x FSC
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 10K 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 10K. pull-up resistor must be connected to the FODD/I2CEN pin (pin 34). With the FODD/I2CEN pin pulled high at power-up, the OV7910/OV7411 image sensors will enable the SCCB port for access.
NTSC PAL
14.31818 MHz 17.734475 MHz
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 matrix, creating 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.
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 AWB 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) and "red" (RED and RBS registers) bias control are only available through the SCCB port. This function enables the user to define a "cooler" or "warmer" background for image capture.
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 component of the S-video signal 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.
Version 1.4, March 21, 2003
Proprietary to OmniVision Technologies
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