OMNIVISION OV7910, OV7410, OV7411 Technical data

Preliminary

查询OV7410供应商

OV7910P SINGLE-CHIP CMOS COLOR PAL CAMERA
OV7410P/OV7411P SINGLE-CHIP CMOS B&W PAL CAMERA

Features

n Single-chip 1/3 inch format video camera

— High-sensitivity version (OV7411P)

n Composite video: PAL or S-Video
n Component video: RGB or YUV
n Sensitivity boost (+18 dB) /AGC on-off
n Automatic exposure/gain/white balance
n External frame sync capability

General Description

The OV7910P (color) and OV7410P/OV7411P (black and white) Sin­gle-chip CMOS camera devices are designed to provide a high level
of functionality in a single small-footprint package. Both devices sup­port composite video and S-Video. The OV7910P imager also pro­vides RGB and YCrCb video signals, and each device directly
interfaces with a VCR TV monitor or other 75 ohm terminated input.
A minimum of external components are required to complete a fully
functional camera subsystem. The OV7910P/OV7410P/OV7411P
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.

OV7910/OV7410/OV7411

n Aperture correction
n I2C programmable:

— color sat., brightness, contrast, white balance, exposure time,

gain

n Gamma correction (0.45)-On/Off
n Low power consumption
n +5 volt-only power suPly

n Video Conferencing
n Video Phones
n Video e-mail
n PC Multimedia
n Toys
n Security
n Surveillance

BPAVE

AGND

Rsvd5

VcBRT

SVDD

SGND

VREF4

VREF3

VREF1

SDA

SCL

VREF2

AVDD

RGSW

CEXP
HSAT

Rsvd11

SMTawb

EVDD

EGND
BUCO
GYYO

RVCVO

OVDD

65432

7
8
9
10*
11*
12*

OV7910P/OV7410P/

13*
14*
15
16
17
18

1920212223242526272829*

G2X

HIGAIN

1

4847464544

PAL

BKLT

DVDD

XCLK1

DGND

XCLK2

AGCEN

GAMMA

42

43

30*

AWBEN

AWBTM

DEGND

41

DEVDD

40

HSHP

39

AMOD1

38

AMOD0

37

PWDN

36

FSI

35

PALSW

34

FODD/I2CEN

33

FSO/VSFR

32

VSHYNC/MIR

31

VADPXO

* NOTE: These pins are “no connect” in OV7410P/OV7411P sensor.

OV7910P/OV7410P/OV7411P PIN ASSIGNMENT

Array Size PAL: 628 x 582 pixels
Image Area PAL:5.78 x 4.19 mm
Auto Electronic

Exposure

1/60-1/15000 sec.

OV7910P: < 3 lux @ f1.2

Min. Illumination

(3000K)

OV7410P: < 0.5 lux @
f1.2
OV7411P: < 0.2 lux @
f1.2

S/N Ratio > 48 dB
Fixed Pattern

Noise (FPN)
Dark Current < 0.2 nA/cm

< 0.03% V

P-P

2

Dynamic Range > 72 dB
Power Supply 5VDC, ±5%
Power

Requirements

200 mW

Package Type 48-pin LCC

OmniVision Technologies, Inc.930 Thompson Place Sunnyvale, CA 94086 U.S.A.
Tel: [phone]Fax: [phone]
e-mail: [e-mail]
Website: http://www.ovt.com

Version 1.4, December 7, 1999

OMNIVISION TECHNOLOGIES, Inc.

Preliminary

OV7910P/OV7410P/OV7411P

SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS

Table 1. Pin Description

(Pins designated with “*” are “no connect” in OV7410P/OV7411P sensor.)

Pin No. Name Pin Type Function/Description

01 SGND V

02 SVDD V

03 VcBRT 1.2V Image brightness adjustment. Default set by internal resistor (~50K). Default may be changed

04 BPAVE Function

05 Rsvd5 V

06 AGND V

07 AVDD V

08 RGSW Function

09 CEXP Function

in

in

(Default = 0)

ref

in

in

(Default = 0)

(Default = 0)

Analog ground

Analog power (+5VDC)

by applying external bias to this pin.
Internal 3-point average selection

“0” - Use internal 3-point averaging
“1” - Bypass internal 3-point averaging

Internal reference

Analog ground

Analog power (+5VDC)

“Raw” data pixel selection

“0” - select non- “raw” pixel data
“1” - select “raw” pixel data

Central exposure selection

“0” - select normal mode
“1” - select central exposure mode

10*

11*
12*

13*

14*

15 BUCO Output Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)

HSAT Function

Rsvd11 N/C Pin reserved

SMTawb Function

EVDD V

EGND V

(Default = 0)

(N/C on OV7410P/
OV7411P)

(Default = 0)

(N/C on OV7410P/
OV7411P)

in

(N/C on OV7410P/
OV7411P)

in

(N/C on OV7410P/
OV7411P)

Color Saturation selection

“0” - select normal color saturation
“1” - select increase color saturation by 25%

Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con­nect”.

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

max. value.
Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con-

nect”.
Analog power (+5VDC)

Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con­nect”.

Analog ground
Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con-

nect”.

AMOD1 AMOD0 Output Component Format

00S-Video CO channelComposite
01Blue componentRGB
10Cb componentYUV or B/W
11Blue componentRGB

Note: Modes (AMOD1, AMOD0) = 00, 01, 11 are not available for OV7410P Image Sensor

2 Version 1.4 December 7, 1999

OMNIVISION TECHNOLOGIES, Inc.

Preliminary

OV7910P/OV7410P/OV7411P

SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS

Table 1. Pin Description

(Pins designated with “*” are “no connect” in OV7410P/OV7411P sensor.)

Pin No. Name Pin Type Function/Description

16 GYYO Output Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)

AMOD1 AMOD0 Output Component Format

00S-Video YO channelComposite
01Green componentRGB
10Y componentYUV or B/W
11Green componentRGB

Note: Modes (AMOD1, AMOD0) = 00, 01, 11 are not available for OV7410P Image Sensor

17 RVCVO Output Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)

AMOD1 AMOD0 Output Component Format

00CVBS signalComposite
01Red componentRGB
10Cr componentYUV or B/W
11Red componentRGB

Note: Modes (AMOD1, AMOD0) = 00, 01, 11 are not available for OV7410P Image Sensor

18 OVDD V

19 G2X Function

in

(Default = 0)

Analog power for video output (+5VDC)

Automatic Gain Control (AGC) gain selection. Affects range selected by HGAIN (p20). See
HGAIN below.

“0” - select normal AGC gain (1X)
“1” - select enhanced AGC gain (2X)

20 HGAIN Function

21 BKLT Function

22 XCLK1 CLK Crystal clock input. Frequency is 4 x Fsc to meet PAL subcarrier standards
23 XCLK2 CLK Crystal clock output (4 x Fsc for PAL = 17.73265 MHz)

24 PAL Function

25 DVDD V

26 DGND V

27 GAMMA Function

28 AGCEN Function

29*

AWBEN Function

(Default = 0)

(Default = 0)

(Default = 1)

in

in

(Default = 1)

(Default = 1)

(Default = 1)

(N/C on OV7410P/
OV7411P)

Automatic Gain Control (AGC) gain range selection

“0” - select normal AGC range (1X <-> 4X)
“1” - select expanded AGC range (1X -> 8X)

HGAIN G2X AGC Range

001X <-> 4X
012X <-> 8X
101X <-> 8X
112X <-> 16X

Backlight selection

“0” - Disable backlight compensation
“1” - Enable backlight compensation

Digital power

Digital ground

GAMMA selection

“0” - Disable GAMMA correction
“1” - Enable GAMMA correction

Automatic Gain Control (AGC) selection

“0” - Disable AGC
“1” - Enable AGC

Automatic White Balance selection

“0” - Disable AWB
“1” - Enable AWB

Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con­nect”.

December 7, 1999 Version 1.4 3

OMNIVISION TECHNOLOGIES, Inc.

Preliminary

OV7910P/OV7410P/OV7411P

SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS

Table 1. Pin Description

(Pins designated with “*” are “no connect” in OV7410P/OV7411P sensor.)

Pin No. Name Pin Type Function/Description

30*

31 VAXPXO Output Valid pixel detect output. CLK is asserted on this pin during active image period.
32 VHSYNC/MIR Output/Function

33 FSO/VSFR Output/Function

34 FODD/I2CEN Output/Function

35 PALSW Output PAL switch clock output
36 FSI Input Field sync input
37 PWDN Function Power Down mode selection

AWBTM Function

(Default = 0)

(N/C on OV7410P/
OV7411P)

(Default = 0)

(Default = 0)

(Default = 0)

Automatic White Balance speed selection

“0” - Select normal AWB
“1” - Select “fast” AWB

Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con­nect”.

Vertical/horizontal sync output. Adding a pullup resistor on this pin enables mirror image

Vertical field/frame sync output, default to field sync. Adding a pullup resistor on this pin enables
frame sync.

Even/Odd field flag. Adding a pullup resistor on this pin enables I2C control.

“0” - Disable power down mode
“1” - Enable power down mode

38 AMOD0 Function AMOD0 (w/AMOD1) selects output mode.

Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con­nect”.

39 AMOD1 Function AMOD1 (w/AMOD0) selects output mode.

Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is “no con­nect”.

40 HSHP Function Sharpness level selection

41 DEVDD V

42 DEGNZD V

43 SCL Input/Output

44 SDA Input/Output

45 VREF1 V

46 VREF2 V

47 VREF3 V

48 VREF4 V

in

in

ref

ref

ref

ref

“0” - select normal sharpness
“1” - select x2 sharpness

Analog power

Analog ground

I2C control

I2C data/address
Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground.
Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground.
Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground.
Internal reference. Must be decoupled with 0.1 µF capacitor to analog ground.

4 Version 1.4 December 7, 1999

OMNIVISION TECHNOLOGIES, Inc.

Preliminary

OV7910P/OV7410P/OV7411P

1. Functional Description

SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS

(Note: All references to color functions apply only to OV7910P image sensor)

1.1 Video Standards

Two TV standards are implemented and available as
output in the OV7910P/OV7410P/OV7411P imaging
devices: PAL (B). Table 2 below shows how to config­ure the standard of choice. Please note

Table 2. Standard Configuration

Standard

PAL

1.2 Video Formats

The OV7910P/OV7410P/OV7411P image sensors
support a variety of formats including Composite
(CVBS), S-Video (YO/CO), RGB components, YUV
components, and B/W. Composite and S-Video signals
are generated from the internal TV encoder and the
RGB/YUV/BW outputs are generated from the color
matrix prior to entering the encoder.

PAL

(pin 24)

1 17.734475 MHz clock in = 4 x Fsc

Clock Comments

that the accuracy and stability of the crystal clock fre­quency is important to avoid unwanted color shift in TV/
video systems.

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: Color format config­uration is valid only for the OV7910P image sensor)

1.2.1 Composite and S-Video

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

configuration for the OV7910P/OV7410P/OV7411P
image sensors. Pins AMOD0/AMOD1 (pins 38 and 39)
select composite and S-Video formats. In this configu­ration, RVCVO (pin 17) outputs CVBS, GYYO (pin 16)
outputs

1.2.2 RGB

Setting AMOD0 = 1 (w/AMOD1 = x) selects the RGB
format. In this configuration, RVCVO outputs the

1.2.3 YUV

Setting AMOD0=0 and AMOD1=1 configures the
OV7910P/OV7410P/OV7411P sensors to operate in
YUV or B/W mode. In this configuration, GYYO outputs
the Y component, RVCVO provides the Cr component,

the YO component of the S-Video signal, and BUCO
(pin 15) outputs the CO component. Table 3 below
summarizes the formats available and the settings
required on the appropriate pins.

Red component, GYYO outputs the Green component,
and BUCO provides the Blue component.

and BUCO outputs the Cb component. On the
OV7410P image sensor, only the GYYO (Y compo­nent) output is valid.

December 7, 1999 Version 1.4 5

OMNIVISION TECHNOLOGIES, Inc.

Preliminary

OV7910P/OV7410P/OV7411P

SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS

Table 3. Video Format Selection

Format Type

Composite + S-Video

RGB Components

YUV Components

Black and White

RVCVO Output

(pin 17)

CVBS YO CO AMOD0 = 0, AMOD1 = 0

Red Green Blue

Cr Y Cb

— Y —

GYYO Output

(pin 16)

1.3 Configuring the OV7910P/OV7410P/OV7411P
Image Sensors for Operation

The OV7910P/OV7410P/OV7411P sensors have been
designed for easy-of-use in many stand-alone applica­tions. Most of the on-chip functions are configurable by
connecting appropriate pins high (logic “1”) or low
(logic “0”) through a 10k Ohm resistor. The image sen­sor reads the input the pins at power up, which enables
user-defined default configurations.

The OV7910P/OV7410P/OV7411P imaging devices
also contain an I2C interface for programmatic access

sensors will enable the I2C port for access.

1.4 White Balance

BUCO Output

(pin 15)

AMOD0 = 1, AMOD1 = x

AMOD0 = 0, AMOD1 = 1

AMOD0 = 0, AMOD1 = 1
(Pins 15 & 17 are undefined on the OV7410P sen-

sor)

Pin Settings

to all

register functions (For further details on I2C, see Sec­tion 2. “I2C Bus” on page 11). By default, the I2C port is
disabled. To enable the I2C for controlling the sensors,

a 10K Ohm pull-up resistor must be connected to
FODD/I2CEN. With FODD/I2CEN pulled high at
power-up, the OV7910P/OV7410P/OV7411P image

AWB is enabled, the image sensors continuously per­form white balancing. A fast or slow mode of white bal­ancing may be user-selected (AWBTM, pin 30). Fast
AWB updates color every 2 fields while slow

The function of white balance in the OV7910P image
sensor is to adjust and calibrate the image devices

white balancing updates every 16 fields.

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 either through an

external pin (AWBEN, pin 29) or through the I2C port. If

able only through the I2C port. This function enables
the user to define a “cooler” or “warmer” background
for image capture.

By using the I2C port, the color temperature may be
further fine tuned to the requirement of the application.
Note that the “blue” (Blue and Blue bias registers) and
“red” (Red and Red bias registers) bias control is avail-

and Backlight control.
HGAIN (pin 20) may be used to set the range of AGC

Gain. A “0” on HGAIN sets AGC Gain range for 1X <->
4X, while a “1” sets the range for 1X <-> 8X. G2X (pin

19) can then be used to enhance the AGC gain range.

1.5 Additional Picture Control

A number of functions/registers are available which
enable the user to configure OV7910P/OV7410P/
OV7411P image capturing parameters. These func­tions include Automatic Gain Control (AGC), AGC
Gain, Automatic Exposure Control (AEC), GAMMA,

A “0” on G2X sets AGC gain at normal. A “1” enhances
the AGC gain by 2 (Refer to Table1, “Pin Description,”
on page2, pins 19 and 20 for further details). This

function may be configured through the I2C port, as

6 Version 1.4 December 7, 1999