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PDF OV7910 Data sheet ( Hoja de datos )
| Número de pieza | OV7910 | |
| Descripción | SINGLE-CHIP CMOS COLOR PAL CAMERA | |
| Fabricantes | ETC | |
| Logotipo |  |
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Preliminary
OV7910/OV7410/OV7411
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
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
General Description
The OV7910P (color) and OV7410P/OV7411P (black and white) Sin-
gle-chip CMOS camera devices are designed to provide a high level
of functionality in a single small-footprint package. Both devices sup-
port composite video and S-Video. The OV7910P imager also pro-
vides 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.
n Video Conferencing
n Video Phones
n Video e-mail
n PC Multimedia
n Toys
n Security
n Surveillance
AVDD 7
RGSW 8
CEXP 9
HSAT 10*
Rsvd11 11*
SMTawb 12*
EVDD 13*
EGND 14*
BUCO 15
GYYO 16
RVCVO 17
OVDD 18
OV7910P/OV7410P/
42 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
Image Area
Auto Electronic
Exposure
Min. Illumination
(3000K)
S/N Ratio
Fixed Pattern
Noise (FPN)
Dark Current
Dynamic Range
Power Supply
Power
Requirements
Package Type
PAL: 628 x 582 pixels
PAL: 5.78 x 4.19 mm
1/60 - 1/15000 sec.
OV7910P: < 3 lux @ f1.2
OV7410P: < 0.5 lux @
f1.2
OV7411P: < 0.2 lux @
f1.2
> 48 dB
< 0.03% VP-P
< 0.2 nA/cm2
> 72 dB
5VDC, ±5%
200 mW
48-pin LCC
OmniVision Technologies, Inc. 930 Thompson Place Sunnyvale, CA 94086 U.S.A.
Tel: (408) 733-3030 Fax: (408) 733-3061
e-mail: [email protected]
Website: http://www.ovt.com
Version 1.4, December 7, 1999
1 page  
OMNIVISION TECHNOLOGIES, Inc.
Preliminary
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
1. Functional Description
(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 config-
ure the standard of choice. Please note
that the accuracy and stability of the crystal clock fre-
quency is important to avoid unwanted color shift in TV/
video systems.
Table 2. Standard Configuration
Standard
PAL
PAL
(pin 24)
1
Clock
17.734475 MHz
Comments
clock in = 4 x Fsc
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.
The image sensor utilizes the RG/BG Bayer pattern
sending raw pixel data through the color matrix, creat-
ing RGB or YUV component signals. At the same time,
YUV signals are also processed to generate both com-
posite and S-Video signals. (Note: Color format config-
uration 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 configu-
ration, RVCVO (pin 17) outputs CVBS, GYYO (pin 16)
outputs
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.
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,
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 compo-
nent) output is valid.
December 7, 1999
Version 1.4
5
5 Page 
OMNIVISION TECHNOLOGIES, Inc.
Preliminary
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
2. I2C Bus
Many of the functions and configuration registers in the
OV7910P/OV7410P/OV7411P image sensors are
available through the I2C high-speed serial interface.
The I2C port is enabled by asserting the I2CEN line
(pin 34) through a 10K ohm resistor to VDD. When the
rate using a 7-bit address/data transfer protocol .
I2C
capability is enabled (I2CEN = 1),the OV7910P/
OV7410P/OV7411P imager operates as a slave
device that supports up to 400 kbps serial transfer
1ST BYTE
2ND BYTE
3RD BYTE
S SLAVE ID (7BIT) RW A SUBADDRESS (8BIT) A
DATA (8BIT)
MSB
START
LSB=0
ACK
MASTER TRANSMIT, SLAVE RECEIVE (WRITE CYCLE)
AP
ACK
STOP
1ST BYTE
2ND BYTE
S SLAVE ID (7BIT) RW A SUBADDRESS (8BIT) A P
MSB
START
LSB=0
ACK
STOP
MASTER TRANSMIT, SLAVE RECEIVE (DUMMY WRITE CYCLE)
1ST BYTE
2ND BYTE
3RD BYTE
S SLAVE ID (7BIT) RW A
DATA (8BIT)
A
DATA (8BIT)
1P
MSB
START
LSB=1
ACK
MASTER RECEIVE, SLAVE TRANSMIT (READ CYCLE)
STOP
NO ACK IN
LAST BYTE
SLAVE ID - 1000000X
X – RW BIT, 1: READ, 0:WRITE
S – START CONDITION
A – ACKNOWLEDGE BIT
P – STOP CONDITION
Figure 3. I2C Bus Protocol Format
– SLAVE TRANSMIT
– MASTER TRANSMIT
– MASTER INITIATE
December 7, 1999
Version 1.4
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet OV7910.PDF ] | |
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