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Электронный компонент: OV7410

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OmniVision Technologies, Inc. 930 Thompson Place Sunnyvale, CA 94086 U.S.A.
Tel: (408) 733-3030 Fax: (408) 733-3061
e-mail: info@ovt.com
Website: http://www.ovt.com
OV7910/OV7410/OV7411
Preliminary
Version 1.4, December 7, 1999
Array Size
PAL:
628 x 582 pixels
Image Area
PAL:
5.78 x 4.19 mm
Auto Electronic
Exposure
1/60 - 1/15000 sec.
Min. Illumination
(3000K)
OV7910P: < 3 lux @ f1.2
OV7410P: < 0.5 lux @
f1.2
OV7411P: < 0.2 lux @
f1.2
S/N Ratio
> 48 dB
Fixed Pattern
Noise (FPN)
< 0.03% V
P-P
Dark Current
< 0.2 nA/cm
2
Dynamic Range
> 72 dB
Power Supply
5VDC, 5%
Power
Requirements
200 mW
Package Type
48-pin LCC
OV7910P/OV7410P/OV7411P PIN ASSIGNMENT
A
G
N
D
R
s
v
d
5
B
P
A
V
E
V
c
B
R
T
S
V
D
D
S
G
N
D
V
R
E
F
4
V
R
E
F
3
V
R
E
F
1
S
D
A
S
C
L
AVDD
RGSW
CEXP
HSAT
Rsvd11
SMTawb
EVDD
EGND
BUCO
GYYO
RVCVO
OVDD
VADPXO
VSHYNC/MIR
FSO/VSFR
FODD/I2CEN
PALSW
FSI
PWDN
AMOD0
AMOD1
HSHP
DEVDD
DEGND
G
2
X
H
I
G
A
I
N
B
K
L
T
X
C
L
K
1
X
C
L
K
2
P
A
L
D
G
N
D
G
A
M
M
A
A
G
C
E
N
D
V
D
D
A
W
B
E
N
A
W
B
T
M
V
R
E
F
2
6
5
4
3
2
1
4
8
4
7
4
6
4
5
4
4
4
3
7
8
9
10
*
11
*
12
*
13
*
14
*
15
16
17
18
31
32
33
34
35
36
37
38
39
40
41
42
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
*
3
0
*
OV7910P/OV7410P/
*
NOTE: These pins are "no connect" in OV7410P/OV7411P sensor.
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
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
I
2
C 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
OV7910P/OV7410P/OV7411P
2
Version 1.4
December 7, 1999
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
Table 1. Pin Description
(Pins designated with "*" are "no connect" in OV7410P/OV7411P sensor.)
Pin No.
Name
Pin Type
Function/Description
01
SGND
V
in
Analog ground
02
SVDD
V
in
Analog power (+5VDC)
03
VcBRT
1.2V
Image brightness adjustment. Default set by internal resistor (~50K). Default may be changed
by applying external bias 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
V
ref
Internal reference
06
AGND
V
in
Analog ground
07
AVDD
V
in
Analog power (+5VDC)
08
RGSW
Function
(Default = 0)
"Raw" data pixel selection
"0" - select non- "raw" pixel data
"1" - select "raw" pixel data
09
CEXP
Function
(Default = 0)
Central exposure selection
"0" - select normal mode
"1" - select central exposure mode
10
*
HSAT
Function
(Default = 0)
(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 con-
nect".
11
*
Rsvd11
N/C
Pin reserved
12
*
SMTawb
Function
(Default = 0)
(N/C on OV7410P/
OV7411P)
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".
13
*
EVDD
V
in
(N/C on OV7410P/
OV7411P)
Analog power (+5VDC)
Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is "no con-
nect".
14
*
EGND
V
in
(N/C on OV7410P/
OV7411P)
Analog ground
Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is "no con-
nect".
15
BUCO
Output
Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)
AMOD1
AMOD0
Output Component
Format
0
0
S-Video CO channel
Composite
0
1
Blue component
RGB
1
0
Cb component
YUV or B/W
1
1
Blue component
RGB
Note: Modes (AMOD1, AMOD0) = 00, 01, 11 are not available for OV7410P Image Sensor
December 7, 1999
Version 1.4
3
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
16
GYYO
Output
Video Output: Output format determined by pins 38 and 39 (AMOD1, AMOD0)
AMOD1
AMOD0
Output Component
Format
0
0
S-Video YO channel
Composite
0
1
Green component
RGB
1
0
Y component
YUV or B/W
1
1
Green component
RGB
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
0
0
CVBS signal
Composite
0
1
Red component
RGB
1
0
Cr component
YUV or B/W
1
1
Red component
RGB
Note: Modes (AMOD1, AMOD0) = 00, 01, 11 are not available for OV7410P Image Sensor
18
OVDD
V
in
Analog power for video output (+5VDC)
19
G2X
Function
(Default = 0)
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
(Default = 0)
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
0
0
1X <-> 4X
0
1
2X <-> 8X
1
0
1X <-> 8X
1
1
2X <-> 16X
21
BKLT
Function
(Default = 0)
Backlight selection
"0" - Disable backlight compensation
"1" - Enable backlight compensation
22
XCLK1
CLK
Crystal clock input. Frequency is 4 x Fsc to meet PAL subcarrier standards
23
XCLK2
CLK
Crystal clock output (4 x F
sc
for PAL = 17.73265 MHz)
24
PAL
Function
(Default = 1)
25
DVDD
V
in
Digital power
26
DGND
V
in
Digital ground
27
GAMMA
Function
(Default = 1)
GAMMA selection
"0" - Disable GAMMA correction
"1" - Enable GAMMA correction
28
AGCEN
Function
(Default = 1)
Automatic Gain Control (AGC) selection
"0" - Disable AGC
"1" - Enable AGC
29
*
AWBEN
Function
(Default = 1)
(N/C on OV7410P/
OV7411P)
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 con-
nect".
Table 1. Pin Description
(Pins designated with "*" are "no connect" in OV7410P/OV7411P sensor.)
Pin No.
Name
Pin Type
Function/Description
OV7910P/OV7410P/OV7411P
4
Version 1.4
December 7, 1999
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
30
*
AWBTM
Function
(Default = 0)
(N/C on OV7410P/
OV7411P)
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 con-
nect".
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 pullup resistor on this pin enables mirror image
33
FSO/VSFR
Output/Function
(Default = 0)
Vertical field/frame sync output, default to field sync. Adding a pullup resistor on this pin enables
frame sync.
34
FODD/I2CEN
Output/Function
(Default = 0)
Even/Odd field flag. Adding a pullup resistor on this pin enables I
2
C control.
35
PALSW
Output
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
AMOD0 (w/AMOD1) selects output mode.
Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is "no con-
nect".
39
AMOD1
Function
AMOD1 (w/AMOD0) selects output mode.
Note: This function is not available on OV7410P/OV7411P Image Sensor. This pin is "no con-
nect".
40
HSHP
Function
Sharpness level selection
"0" - select normal sharpness
"1" - select x2 sharpness
41
DEVDD
V
in
Analog power
42
DEGNZD
V
in
Analog ground
43
SCL
Input/Output
I
2
C control
44
SDA
Input/Output
I
2
C data/address
45
VREF1
V
ref
Internal reference. Must be decoupled with 0.1
F capacitor to analog ground.
46
VREF2
V
ref
Internal reference. Must be decoupled with 0.1
F capacitor to analog ground.
47
VREF3
V
ref
Internal reference. Must be decoupled with 0.1
F capacitor to analog ground.
48
VREF4
V
ref
Internal reference. Must be decoupled with 0.1
F capacitor to analog ground.
Table 1. Pin Description
(Pins designated with "*" are "no connect" in OV7410P/OV7411P sensor.)
Pin No.
Name
Pin Type
Function/Description
December 7, 1999
Version 1.4
5
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
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.
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
Table 2. Standard Configuration
Standard
PAL
(pin 24)
Clock
Comments
PAL
1
17.734475 MHz
clock in = 4 x Fsc
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
Red component, GYYO outputs the Green component,
and BUCO provides the Blue component.
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,
and BUCO outputs the Cb component. On the
OV7410P image sensor, only the GYYO (Y compo-
nent) output is valid.
1.
Functional Description
(Note: All references to color functions apply only to OV7910P image sensor)
OV7910P/OV7410P/OV7411P
6
Version 1.4
December 7, 1999
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
Table 3. Video Format Selection
Format Type
RVCVO Output
(pin 17)
GYYO Output
(pin 16)
BUCO Output
(pin 15)
Pin Settings
Composite + S-Video
CVBS
YO
CO
AMOD0 = 0, AMOD1 = 0
RGB Components
Red
Green
Blue
AMOD0 = 1, AMOD1 = x
YUV Components
Cr
Y
Cb
AMOD0 = 0, AMOD1 = 1
Black and White
--
Y
--
AMOD0 = 0, AMOD1 = 1
(Pins 15 & 17 are undefined on the OV7410P sen-
sor)
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 applica-
tions. 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 sen-
sor reads the input the pins at power up, which enables
user-defined default configurations.
The OV7910P/OV7410P/OV7411P imaging devices
also contain an I
2
C interface for programmatic access
to all
register functions (For further details on I
2
C, see Sec-
tion 2. "I
2
C Bus" on page 11). By default, the I
2
C port is
disabled. To enable the I
2
C 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
sensors will enable the I
2
C port for access.
1.4
White Balance
The function of white balance in the OV7910P image
sensor is to adjust and calibrate the image devices
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 I
2
C port. If
AWB is enabled, the image sensors continuously per-
form white balancing. A fast or slow mode of white bal-
ancing may be user-selected (AWBTM, pin 30). Fast
AWB updates color every 2 fields while slow
white balancing updates every 16 fields.
By using the I
2
C 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-
able only through the I
2
C port. This function enables
the user to define a "cooler" or "warmer" background
for image capture.
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 func-
tions include Automatic Gain Control (AGC), AGC
Gain, Automatic Exposure Control (AEC), GAMMA,
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.
A "0" on G2X sets AGC gain at normal. A "1" enhances
the AGC gain by 2 (Refer to Table 1, "Pin Description,"
on page 2, pins 19 and 20 for further details). This
function may be configured through the I
2
C port, as
December 7, 1999
Version 1.4
7
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
well. GAMMA (pin 27) can be used to set the GAMMA
correction. BKLT (pin 21) controls how the OV7910P/
OV7410P/OV7411P image sensors manage backlight
conditions. These functions may also be controlled
through the I
2
C 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 reprogrammed through the I
2
C
port.
1.6
Other Image Sensor Control Functions
Additional programmable functions for the OV7910P/
OV7410P/OV7411P image sensors include sharpness
adjustment, brightness level fine tune, color saturation
adjustment, mirror image control, and power down. All
of these functions (except power down) can be config-
ured either by an external pin or through the I
2
C inter-
face.
OV7910P/OV7410P/OV7411P
8
Version 1.4
December 7, 1999
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
Specifications
Table 4. Electrical parameters
(0
o
C to 70
o
C, all voltages referenced to GND)
Symbol
Descriptions
Max
Typ
Min
Units
Supply
V
DD
Supply voltage (VDD, DVDD)
5.25
5.0
4.75
V
I
DD
Supply Current in VDDs
40
-
-
mA
I
2
C
f
scl
SCL clock frequency
400
-
-
kHz
t
f
SDA fall time
300
-
20 + 0.1C
sda
ns
t
idle
Bus idle time
-
-
1.3
us
t
hdsta
START hold time
-
-
0.6
us
t
stps
STOP set up time
-
-
0.6
us
t
ds
SDA set up time
-
-
100
us
t
dh
SDA hold time
-
-
0
us
Clock input / Crystal Oscillator
f
osc
Resonator frequency
10
-
20
MHz
Load capacitor
-
10
-
pF
Parallel resistance
1M
W
Rise/fall time for external clock input
-
5
-
ns
Duty cycle for external clock input
60
40
%
Misc. timing
t
SYNC
External FSI cycle time
-
2
-
frame
t
PU
Chip power up time
100
-
-
us
t
PD
Power up delay time
-
10
-
us
t
PZ
Power up low-z delay
-
1000
-
ns
VTO analog video output parameters
V
TO
analog video output parameters
Symbol
Descriptions
Max
Type
(OV7910P)
Type
(OV7410P/
OV7411P)
Min
Units
V
TO-P
Video peak signal level
-
2.3
2.4
-
V
V
TO-B
Video black signal level
-
0.7
1.2
-
V
V
SYNC
Video sync pulse amplitude
-
0.7
0.4
-
V
Ro
Video output load
75
75
Ohm
December 7, 1999
Version 1.4
9
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
Figure 1. Spectrum Response
OV7910P/OV7410P/OV7411P
10
Version 1.4
December 7, 1999
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
Figure 2. Video Timing Diagram
(
A
)

H
O
R
I
Z
O
N
T
A
L

T
I
M
I
N
G
(
B
)

V
E
R
T
I
C
A
L

T
I
M
I
N
G
C
H
S
Y
N
C
V
T
O
C
H
S
Y
N
C
C
H
S
Y
N
C
1
2
3
4
5
2
5
5
2
4
5
2
3
2
6
3
2
6
2
2
6
1
2
6
4
2
6
5
2
6
6
2
6
7
t
H
S
Y
N
C
t
H
t
H
B
K
(
C
O
M
P
O
S
I
T
E
)
(
H
-
S
Y
N
C
)
t
V
S
Y
N
C
t
V
V
S
Y
N
C
December 7, 1999
Version 1.4
11
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
rate using a 7-bit address/data transfer protocol .
Figure 3. I
2
C Bus Protocol Format
S START CONDITION
A ACKNOWLEDGE BIT
P STOP CONDITION
SLAVE ID - 1000000X
MSB
LSB=0
X RW BIT, 1: READ, 0:WRITE
1ST BYTE
2ND BYTE
3RD BYTE
S
P
A
A
A
RW
SLAVE ID (7BIT)
SUBADDRESS (8BIT)
DATA (8BIT)
START
STOP
ACK
MSB
LSB=1
1ST BYTE
2ND BYTE
3RD BYTE
S
P
A
A
RW
SLAVE ID (7BIT)
START
STOP
ACK
DATA (8BIT)
DATA (8BIT)
MASTER TRANSMIT, SLAVE RECEIVE (WRITE CYCLE)
MASTER RECEIVE, SLAVE TRANSMIT (READ CYCLE)
SLAVE TRANSMIT
MASTER TRANSMIT
MASTER INITIATE
NO ACK IN
LAST BYTE
ACK
1
MSB
LSB=0
1ST BYTE
2ND BYTE
S
P
A
A
RW
SLAVE ID (7BIT)
SUBADDRESS (8BIT)
START
STOP
ACK
MASTER TRANSMIT, SLAVE RECEIVE (DUMMY WRITE CYCLE)
2.
I
2
C Bus
Many of the functions and configuration registers in the
OV7910P/OV7410P/OV7411P image sensors are
available through the I
2
C high-speed serial interface.
The I
2
C port is enabled by asserting the I2CEN line
(pin 34) through a 10K ohm resistor to V
DD
. When the
I
2
C
capability is enabled (I2CEN = 1),the OV7910P/
OV7410P/OV7411P imager operates as a slave
device that supports up to 400 kbps serial transfer
OV7910P/OV7410P/OV7411P
12
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SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
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MNI
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ECHNOLOGIES
, Inc.
Preliminary
below).
Figure 4. Bit Transfer on the I
2
C Bus
SDA
SCL
DATA
STABLE
DATA
CHANGE
ALLOWED
2.1
I
2
C Bus Protocol Format
In I
2
C operation, the master must perform the following
operations:
n
Generate the start/stop condition
n
Provide the serial clock on
SCL
n
Place the 7-bit slave address, the RW bit,
and the 8-bit subaddress on
SDA
The receiver must pull down SDA during the acknowl-
edge bit time. During the write cycle, the OV7910P/
OV7410P/OV7411P device returns the acknowledg-
ment and, during read cycle, the master returns the
acknowledgment except when the read data is the last
byte. If the read data is the last byte, the master does
not perform an acknowledge, indicating to the slave
that the read cycle can be terminated. Note that the
restart feature is not supported here.
Within each byte, MSB is always transferred first.
Read/write control bit is the LSB of the first byte. Stan-
dard I
2
C communications require only two pins: SCL
and SDA. SDA is configured as open drain for bidirec-
tional purpose. A HIGH to LOW transition on the SDA
while SCL is HIGH indicates a START condition. A
LOW to HIGH transition on the SDA while SCL is HIGH
indicates a STOP condition. Only a master can gener-
ate 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 allowed to change state only
when SCL is LOW (See Figure 4. Bit Transfer on the
I
2
C Bus and Figure 5. Data Transfer on the I
2
C Bus
I
December 7, 1999
Version 1.4
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OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
in one bus cycle. A multi-byte cycle overwrites its original subaddress; therefore, if a read cycle immediately follows
a multi-byte cycle, you must insert a single-byte write cycle that provides a new subaddress.
The OV7910P/OV7410P/OV7411P supports a single slave ID. The ID is preset to 80 write and 81 for read.
In the write cycle, the second byte in I
2
C bus is the subaddress for selecting the individual on-chip registers, and
the third byte is the data associated with this register. Writing to an undefined subaddress is ignored.
In the read cycle, the second byte is the data associated with the previous stored subaddress. Reading of unde-
fined subaddresses returns unknown data.
2.2
Register Set
The table below provides a list and description of available I
2
C registers contained in the OV7910P/OV7410P/
OV7411P image sensor.
Table 5. I
2
C Registers
Subad-
dress
(hex)
Register
Default
(hex)
Read/
Write
Descriptions
00
Gain[6:0]
00
RW
GC[7] - unimplemented bit, returns `X' when read.
GC[6:0] Storage for the 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[7:0]
80
RW
Storage for the current blue channel setting for white balance control.
BLU[7] "0" decrease gain, "1" increase gain.
BLU[6:0] blue channel gain balance value.
Note: This function is not available on the OV7410P/OV7411P Image Sensor.
02
Red[7:0]
80
RW
Storage for the current red channel setting for white balance control.
RED[7] "0" decrease gain, "1" increase gain.
RED[6:0] red channel balance value.
Note: This function is not available on the OV7410P/OV7411P Image Sensor.
03
Sat
D0
RW
SAT[7:0] saturation adjustment. "FFh"- highest, "00h"-lowest
Note: This function is not available on the OV7410P/OV7411P Image Sensor.
04
Cnt
00
RW
CTR[7:0] contrast adjustment. "FFh"-highest, "00h"-lowest
05
Brt
80
RW
BRT[7:0] brightness adjustment. "FFh"-highest,"00h"-lowest
06
Rsvd06
B2
RW
reserved
07
Blue Bias
20
RW
BBS[7:6] rsvd (BBS[7:6] = 00)
BBS[5:0] blue channel bias value.
This value defines the fine tune adjustment for the blue tint in the white balance control. This reg-
ister is the manual control portion of the AWB control
Note: This function is not available on the OV7410P/OV7411P Image Sensor.
Figure 5. Data Transfer on the I
2
C Bus
The OV7910P/OV7410P/OV7411P I
2
C supports multi-
byte write and multi-byte read. The master must supply
the subaddress. in the write cycle, but not in the read
cycle. Therefore, the OV7910P/OV7410P/OV7411P
takes the read subaddress from the previous write
cycle. In multi-byte write or multi-byte read cycles, the
subaddress is automatically increment after the first
data byte so that continuous locations can be accessed
SDA
SCL
S
A
SLAVE ID
RW
SUB ADD
OV7910P/OV7410P/OV7411P
14
Version 1.4
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SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
08
Red Bias
20
RW
RBS[7:6] rsvd (RBS[7:6] = 01)
RBS[5:0] red channel bias value.
This value defines the fine tune adjustment for the red tint in the white balance control. This reg-
ister is the manual control portion of the AWB control
Note: This function is not available on the OV7410P/OV7411P Image Sensor.
09
Rsvd09
B7
RW
reserved
0A
Rsvd0A
45
RW
reserved
0B
Rsvd0B
--
W
reserved
0C
Rsvd0C
--
W
reserved
0D
Rsvd0D
4E
RW
reserved
0E
Rsvd0E
32
RW
reserved
0F
Rsvd0F
7A
RW
reserved
10
version
03
R
Version
11
Manufacture ID (H)
7F
R
MIDH[7:0] manufacture ID high byte
12
Manufacture ID (L)
A2
R
MIDL[7:0] manufacture ID low byte
13
AEC
82
RW
AEC[7:0] Manual exposure setting. "00" = lowest, 82 = Highest
14
Common A
9F
RW
COMA[7] - CEXP, "0" selects central exposure
COMA[6:4] - rsvd
COMA[3] - GAMMA, "1" selects gamma = 0.45, "0" select gamma=1.0
COMA[2] - AGCEN, "1" enables auto gain control
COMA[1] - AWBEN "1" enables auto white balance
*
COMA[0] - AEC enable. If AEC is enabled, the AEC register (Reg. 13) is updated automatically.
If AEC is disabled, AEC register remains unchanged.
*
Note: COMA[1], AWBEN is not available on the OV7410P/OV7411P Image Sensor.
15
Common B
00
RW
COMB[7] - SRST, "1" initiates soft reset. Initiate soft reset. All registers are set to default values
and chip is reset to known state and resumes normal operation. This bit is automatically
cleared after reset.
COMB[6]] - MIRR, "1" selects mirror image
COMB[5]] - VSFR, "1" enables frame sync output to VSYNC (pin 32), "0" enables field sync
ouput to VSYNC
COMB[4]] - BKLT, "1" selects backlight exposure mode
COMB[3]] - FREX, "1" disables the update of exposure and gain value
COMB[2] - HGAIN. Automatic Gain Control (AGC) gain range selection. See COME[6] (G2X),
below.
"0" - select normal AGC range (1X <-> 4X)
"1" - select expanded AGC range (1X -> 8X)
HGAIN
G2X
AGC Range
0
0
1X <-> 4X
0
1
2X <-> 8X
1
0
1X <-> 8X
1
1
2X <-> 16X
COMB[1:0] - AMOD, select video output modes
00 - S-video and CVBS
*
01 - RGB
*
10 - YUV
11 - RGB
*
*
Note: COMB[1:0] = 00, 01, 11 are not available on the OV7410P/OV7411P Image Sensor.
16
Common C
20
RW
COMC[7] - Smart AWB. "0" disables SMTawb, "1" enables SMTawb
COMC[6] - rsvd
COMC[5] - Automatic Level Control. "0" disables ALC, "1" enables ALCauto level control
COMC[4:0] - rsvd
17
Common D
34
RW
COMD[7:4] - rsvd
COMD[3] - BPSHP. "0" enables sharpness control, "1" disables sharpness control
COMD[2] - rsvd
COMD[1] -AWBTM, "1" selects fast AWB update
*
COMD[0] - rsvd
*
Note: COMD[1], AWBTM is not available on the OV7410P/OV7411P Image Sensor.
18
Rsvd18
A2
RW
reserved
19
Rsvd19
66
RW
reserved
Subad-
dress
(hex)
Register
Default
(hex)
Read/
Write
Descriptions
December 7, 1999
Version 1.4
15
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
1A
Rsvd1A
73
RW
reserved
1B
Rsvd1B
D0
RW
reserved
1C
Rsvd1C
15
RW
reserved
1D
Common E
20
RW
COME[7] - rsvd
COME[6] - G2XA. Automatic Gain Control (AGC) gain selection. Affects range selected by
HGAIN. See COMB[2] (HGAIN), above.
"0" - select normal AGC gain (1X)
"1" - select enhanced AGC gain (2X)
COME[5:0] - rsvd
1E
Rsvd1F
30
RW
reserved
1F
Rsvd20
28
RW
reserved
20 - 2F
Rsvd2X
N/A
RW
reserved
30
Rsvd30
80
RW
reserved
31
Rsvd31
80
RW
reserved
32
Rsvd32
80
RW
reserved
33
Rsvd33
40
RW
reserved
34
Rsvd34
80
RW
reserved
35
Rsvd35
20
RW
reserved
36
Rsvd36
20
RW
reserved
37
Rsvd37
80
RW
reserved
38
Rsvd38
80
RW
reserved
39
Rsvd39
80
RW
reserved
3A
Rsvd3A
80
RW
reserved
3B
Rsvd3B
80
RW
reserved
Subad-
dress
(hex)
Register
Default
(hex)
Read/
Write
Descriptions
OV7910P/OV7410P/OV7411P
16
Version 1.4
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SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
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ECHNOLOGIES
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Preliminary
31
30
19
18
7
6
43
42
48
+0.010
0.060 -0.005
TYP.
0.040 0.007
TYP.
0.440 0.005
0.040 0.003
0.085 0.010
0.020 0.003
TYP.
R 0.0075
48 PLCS
R 0.0075
4 CORNERS
0.003
0.002
0.020 0.002
0.015 0.002
0.030
0.003
0.065 0.007
0.003
Bottom View
Top View
Side View
42
43
6
19
30
31
48
18
1
7
42
43
31
30
19
18
6
7
0.006 MAX.
0.002 TYP.
0.350 SQ. 0.005
0.430 SQ. 0.005
0.560 SQ. -0.005
+0.012
0
.
0
3
6

M
I
N
.
December 7, 1999
Version 1.4
17
OV7910P/OV7410P/OV7411P
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
Figure 6. OV7910P/OV7410P/OV7411P Package Outline
OmniVision Technologies, Inc. reserves the right to make changes without further notice to any product herein to improve reliability, function, or
design. OmniVision Technologies, Inc. does not assume any liability arising out of the application or use of any product or circuit described
herein; neither does it convey any license under its patent rights nor the rights of others. No part of this publication may be copied or repro-
duced, in any form without the prior written consent of OmniVision Technologies, Inc.
Table 6. Ordering Information
Part Number
Description
Package
OV7910P
Color Image Sensor, PAL Analog, I
2
C Bus Control
48 pin LCC
OV7410P
B/W Image Sensor, PAL Analog, I
2
C Bus Control
48 pin LCC
OV7411P
High sensitivity B/W Image Sensor w/micro lenses, PAL Analog, I
2
C Bus Control
48 pin LCC
1
Sensor
Array
DIE
Package Center
(0, 0)
Array Center
(14.5 mil, 0.87mil)
(368.3 , 22.1 )
OV7910P/OV7410P/OV7411P
18
Version 1.4
December 7, 1999
SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS
O
MNI
V
ISION
T
ECHNOLOGIES
, Inc.
Preliminary
Revision History
Product
Product
Version
Description
Date
OV7910P/OV7410P
AA
Product Release
10/1/98
OV7910P/OV7410P
AI
Process/performance change enhancements
1/1/99
OV7910P/OV7410P
AJ
Process/performance change enhancements, I2C
register changes: Regs. 03, 06, 08, x10
2/11/99
OV7910P/OV7410P
AK
Performance/manufacturability improvements
2/22/99
OV7910P/OV7410P
AK
Miscellaneous corrections
6/6/99
OV7910P/OV7410P/
OV7411P
AK
Add OV7411P release
6/17/99