OV7960高清安防车载图像传感器应用方案

C o n f i d e n t i a l f o r L a i m u

O n l y datasheet PRELIMINARY SPECIFICATION CMOS digital / analog NTSC/PAL image sensor with OmniPixel3-HS? technology O V 7960/O V 7461

C o n f i d e n t i a l f o r L a i m u O n l y

C o n f i d e n t i a l f o r L a i m u O n l y 06.12.2009PRELIMINARY SPECIFICATION proprietary to OmniVision Technologies i

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CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

datasheet (CLCC)

PRELIMINARY SPECIFICATION

version 1.2

june 2009

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OV7960/OV7461proprietary to OmniVision Technologies PRELIMINARY SPECIFICATION version 1.2

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ordering information

OV07960-C48N (color, NTSC, lead-free)48-pin CLCC

OV07461-C48N (b&w, NTSC, lead-free)48-pin CLCC

OV07960-C48P (color, PAL, lead-free)48-pin CLCC

OV07461-C48P (b&w, PAL, lead-free)48-pin CLCC

applications

security and surveillance cameras videoconferencing video phones video e-mail medical equipment

dental equipment

features

NTSC and PAL output (see sidebar note ) high sensitivity

automatic exposure/gain with 16 zone control horizontal and vertical windowing capability auto white balance control aperture/gamma correction

slave compatible serial camera control bus (SCCB) control interface for register programming

low power consumption

extremely low dark current for high temperature applications

50/60 Hz flicker cancellation

overlay with four layers, 16 colors and eight transparencies each

16 bytes of one time programmable memory (OTP) SPI master for single static overlay and loading setting

dynamic overlay controls video feedback loop defective pixel correction

note

Since it is impossible to check compatibility with all displays, check the interoperability before committing to mass production.

key specifications

active array size:NTSC: 656 x 492PAL: 768 x 576

power supply:core: 1.5V analog: 3.3V I/O: 1.8 ~ 3.3V

power requirements:active: 225 mW standby: TBD

temperature range:

operating: -20°C to +70°C (see table 8-2)stable image: 0°C to +50°C (see table 8-2)

optical size: NTSC: 1/3.6"PAL: 1/3"

chief ray angle: 0°

output formats: NTSC/PAL, CCIR656

maximum image transfer rate:NTSC: 60 fields per second PAL: 50 fields per second sensitivity: TBD

shutter: rolling shutter (see sidebar note ) S/N ratio: TBD dynamic range: TBD scan mode: TBD

pixel size: 6.0 μm x 6.0 μm dark current: TBD

image area: 4752 μm x 3552 μm

package dimensions: 14.22 mm x 14.22 mm

note

Sensors with rolling shutter and high

sensitivity can produce images with banding under certain

fluorescent lighting conditions.

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n t i a l f o r L a i m u O n l y CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

OV7960/OV7461proprietary to OmniVision Technologies PRELIMINARY SPECIFICATION version 1.2

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table of contents

1 signal descriptions 1-1

2 system level description

2-12.1 overview 2-12.2 architecture 2-12.3 PLL control 2-32.4 I/O control

2-3

2.4.1 TV output mode (NTSC or PAL) 2-32.5 system control

2-32.5.1 external components 2-32.5.2 power management 2-42.5.3 system clock 2-4

2.6 SCCB interface 2-42.7 standby and sleep 2-42.8 video feedback mode

2-52.8.1 video feedback mode 2-52.9 analog format 2-63 block level description

3-13.1 pixel array structure 3-14 image sensor core digital functions

4-14.1 mirror and flip 4-14.2 test pattern

4-24.3 AEC/AGC algorithms

4-34.3.1 overview

4-34.3.2 average-based algorithm 4-34.3.3 histogram-based algorithm 4-54.3.4 average luminance (YAVG) 4-64.4 AEC/AGC steps

4-84.4.1 auto exposure control (AEC) 4-84.4.2 auto gain control (AGC)

4-104.5 black level calibration (BLC) 4-114.6 DIG GAIN

4-124.7 one-time programmable (OTP) memory

4-125 image sensor processor digital functions

5-1

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O n l y CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

OV7960/OV7461

proprietary to OmniVision Technologies

PRELIMINARY SPECIFICATION

version 1.2

5.1 DSP_TOP 5-15.2 SYNC

5-55.3 lens correction (LENC) 5-6

5.4 raw gamma (RGMA) 5-125.5 auto white balance (AWB) 5-145.6 defective pixel cancellation (DPC) 5-155.7 de-noise (DNS) 5-165.8 color interpolation (CIP) 5-195.9 color matrix (CMX) 5-195.10 CONTRAST

5-215.11 YUV gamma (YGMA) 5-225.12 UV average (UVAVG) 5-245.13 UV adjust (UVADJ) 5-245.14 special digital effect (SDE) 5-265.15 CLIP 5-285.16 16-zone luminance average (YAVG)

5-295.17 TV encoder 5-316 image sensor output interface digital functions

6-16.1 TV mode

6-16.1.1 timing diagrams 6-16.1.2 composite video signals

6-26.2 overlay

6-36.2.1 hardware connection 6-36.2.2 internal overlay structure

6-46.2.3 flash memory structure

6-57 register tables

7-18 electrical specifications

8-18.1 absolute maximum ratings 8-18.2 functional temperature 8-18.3 DC characteristics 8-28.4 AC characteristics 8-39 mechanical specifications

9-19.1 physical specifications 9-19.2 IR reflow specifications 9-210 optical specifications

10-1

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10.1 sensor array center 10-1

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n t i a l f o r L a i m u O n l y CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

OV7960/OV7461proprietary to OmniVision Technologies PRELIMINARY SPECIFICATION version 1.2

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ix

list of figures

figure 1-1pin diagram 1-3

figure 2-1OV7960/OV7461 block diagram 2-1figure 2-2OV7960/OV7461 reference schematic 2-2figure 2-3PLL control diagram

2-3figure 3-1sensor array region color filter layout 3-1figure 4-1mirror and flip samples 4-1

figure 4-2test pattern 4-2figure 4-3desired convergence

4-4figure 4-4average-based window definition 4-6figure 4-5darker and brighter illumination situations 4-8figure 6-1NTSC timing diagram 6-1figure 6-2PAL timing diagram

6-1figure 6-3NTSC composite video signal 6-2figure 6-4PAL composite video signal 6-2figure 6-5in-system programmer 6-3figure 6-6overlay channels 6-4figure 6-7relative timing

6-4figure 9-1package specifications 9-1figure 9-2IR reflow ramp rate requirements

9-2figure 10-1

sensor array center

10-1

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n t i a l f o r L a i m u O n l y CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

OV7960/OV7461proprietary to OmniVision Technologies PRELIMINARY SPECIFICATION version 1.2

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list of tables

table 1-1 signal descriptions 1-1

table 2-1 driving capability and direction control for I/O pads 2-3table 2-2 hardware settings for video feedback mode 2-5table 2-3 register settings for video feedback mode 2-5table 2-4 analog format and frame rate 2-6table 4-1 mirror and flip function control

4-1

table 4-2 driving capability and direction control for I/O pads 4-2table 4-3 AEC/AGC algorithms

4-3table 4-4 AEC/AGC histogram algorithms 4-5table 4-5 YAVG window and weight registers 4-6table 4-6 AEC and banding filter registers 4-10table 4-7 BLC control functions 4-11table 4-8 digital gain control functions 4-12table 4-9 OTP registers 4-12table 5-1 DSP top registers 5-1table 5-2 SYNC registers 5-5table 5-3 LENC registers 5-6table 5-4 RGMA registers 5-12table 5-5 AWB registers 5-14table 5-6 DPC registers 5-15table 5-7 DNS registers

5-16table 5-8 CIP registers 5-19table 5-9 CMX registers

5-19table 5-10 contrast registers 5-21table 5-11 YGMA registers 5-22table 5-12 UVAVG registers

5-24table 5-13 UV adjust 5-24table 5-14 SDE registers

5-26table 5-15 CLIP registers 5-28table 5-16 YAVG registers 5-29table 5-17 TV encoder registers 5-31table 6-1 overlay registers

6-5

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m u O n l y CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

OV7960/OV7461

proprietary to OmniVision Technologies

PRELIMINARY SPECIFICATION

version 1.2

table 7-1 system control registers 7-1table 7-2 ISP control 7-26table 7-3 LENC control 7-30

table 7-4 WBC control 7-34table 7-5 CIP control 7-36table 7-6 contrast control 7-38table 7-7 gamma control 7-40table 7-8 autocolor saturation 7-44table 7-9 SDE control 7-45table 7-10 AVG control

7-46table 8-1 absolute maximum ratings 8-1table 8-2 functional temperature 8-1table 8-3 DC characteristics 8-2table 8-4 AC characteristics (TA = 25°C, VDD-A = 3.3V, VDD-IO = 1.8V)

8-3table 8-5 timing characteristics 8-3table 9-1 package dimensions 9-1table 9-2 reflow conditions

9-2

C o n f i d e n t i a l f o r L a i m u O n l y 06.12.2009PRELIMINARY SPECIFICATION proprietary to OmniVision Technologies 1-1

1signal descriptions

table 1-1 lists the signal descriptions and their corresponding pin numbers for the OV7960/OV7461 image sensor. The package information is shown in section 9.

table 1-1

signal descriptions (sheet 1 of 2)pin

number

signal name pin type description 01

VREFH analog internal reference 02

AGND ground analog ground 03

VREFD analog internal reference 04

AVDD power 3.3V power 05

VREFB reference internal reference 06

PAL/NTSC input PAL/NTSC switch 07

PWDN input power down input with pull-down resistor (active high)08

RESET_B input reset input with pull-up resistor (active low)09

FSIN I/O frame sync signal 10

VCON output composite video output negative 11

VCOP output composite video output positive 12

OVDD power 3.3V power 13

OGND ground ground 14

DOGND ground digital ground 15

SCK output SPI clock 16

ESI input SPI data input 17

ESO output SPI data output 18

VICK I/O video input clock 19

VI_2

I/O video data input[2]20VI_3

I/O video data input[3]21

XI input clock input 22

XO output clock output 23

VI_4I/O video data input[4]24

VI_5I/O video data input[5]25DVDD

power 1.5V power

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d e n t i a l f o r L a i m u O n l y CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology OV7960/OV7461proprietary to OmniVision Technologies PRELIMINARY SPECIFICATION version 1.226DOVDD power 1.8~3.3V power 27Y9output video data output[9]28Y8output video data output[8]29Y7output video data output[7]30Y6output video data output[6]31Y5output video data output[5]32Y1/VI_1I/O video data output[1] or video data input[1]33Y0/VI_0I/O video data output[0] or video data input[0]34PCLK I/O video output clock 35DOGND ground ground 36Y2output video data output[2]37Y3output video data output[3]38Y4output video data output[4]39HREF/VI_7I/O video output horizontal signal or video data input[7]40VSYNC/VI_6I/O video output vertical signal or video data input[6]41SDA I/O SCCB interface data pin 42SCL input SCCB interface input clock 43OVLEN input overlay ON/OFF 44CS output SPI chip select 45COLOR/BW input color or black and white switch 46VREFN reference internal reference 47SGND power sensor array ground 48SVDD power 3.3V power

table 1-1signal descriptions (sheet 2 of 2)pin number signal name pin type description

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PRELIMINARY SPECIFICATION

proprietary to OmniVision Technologies

1-3

figure 1-1pin diagram

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n t i a l f o r L a i m u O n l y CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

OV7960/OV7461proprietary to OmniVision Technologies PRELIMINARY SPECIFICATION version 1.2

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2-1

2system level description

2.1 overview

The OV7960 (color) and OV7461 (b&w) image sensors are low voltage, high performance CMOS image analog sensors that provide the full functionality of a single chip digital / analog NTSC/PAL image sensor using OmniPixel3-HS? technology in a small footprint package. They provide full-frame images via the control of the Serial Camera Control Bus

(SCCB) interface.

This product is ideal for applications requiring a small footprint, low voltage, low power and low cost color video camera.

2.2 architecture

The OV7960/OV7461 sensor core generates stream pixel data at a constant frame rate with analog output.

The timing generator outputs signals to access the rows of the image array, pre-charging and sampling the rows of array

in series. In the time between pre-charging and sampling a row, the charge in the pixels decreases with the time exposed

to the incident light. This is known as exposure time.

The exposure time is controlled by adjusting the time interval between pre-charging and sampling. After the data of the pixels in the row has been sampled, it is processed through analog circuitry to correct the offset and multiply the data with corresponding gain. Following analog processing is the ADC which outputs 10-bit data for each pixel in the array.

figure 2-1OV7960/OV7461 block diagram

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CMOS analog NTSC/PAL image sensor with OmniPixel3-HS? technology

OV7960/OV7461

proprietary to OmniVision Technologies

PRELIMINARY SPECIFICATION

version 1.2

figure 2-2OV7960/OV7461 reference schematic

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2.3 PLL control

The OV7960/OV7461 PLL allows input clock frequency ranging from 6~27 MHz and has a maximum VCO frequency of 500 MHz. PLLOUT is the input clock for the digital part of the sensor.

Divider[1:0] (0x3095[6:5])00 – /1, 01 – /2, 10 – /2, 11 – /4

PREDIV[1:0] (0x3096[6:5])00 – /1, 01 – /1.5, 10 – /2, 11 – /3

PLLdiv[4:0] (0x3095) is the multiplier parameter: multiplier = (32 - PLLdiv)

figure 2-3PLL control diagram

2.4 I/O control The OV7960/OV7461 I/O pad direction and driving capability can be easily adjusted. table 2-1 lists the driving capability and direction control registers of the I/O pads.2.4.1 TV output mode (NTSC or PAL)VCON and VCOP composite video output signals are from DAC.2.5 system control

2.5.1 external components

An external 3.13 ~ 3.47V power supply is used for array power. DOVDD, power for IO pad, can be from 1.7 to 3.47V.

1.5V core power is converted from DOVDD power by the internal regulator.

A resistor is required for TV out DAC power reference.

table 2-1driving capability and direction control for I/O pads function register description

DAC power down

0x3052Bit[2]:Stops VCON, VCOP output, power down DAC block

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