
S INGLE IC CMOS  COLOR AND B/W DIGIT AL CAMERAS
March 4, 2000 
Version 1.0 
11 
Default mode: 
-
 1st HREF Y channel output unstable data, UV output B
11
 G
12
 B
13
 G
14
···
-
 2nd HREF Y channel output G
21
 R
22
 G
23
 R
24
···
, UV output B
11
 G
12
 B
13 
G
14
···
-
 3rd HREF Y channel output G
21
 R
22
 G
23
 R
24
···
, UV output B
31
 G
23
 B
33
 G
34
···
-
 Every line of data is output twice. 
YG mode: 
-
 1st HREF Y and UV output unstable data. 
-
 2nd HREF Y channel output G
21
 G
12
 G
23
 G
14
···
, UV output B
11
 R
22
 B
13
 R
24 
···
-
 3rd HREF Y is G
21
 G
32
 G
23
 G
34
···
, UV channel is B
31
 R
22
 B
33
 R
24
···
-
 Every line data output twice. 
One line mode: 
-
 1st HREF Y channel output B
11
 G
12
 B
13
 G
14 
···
-
 2nd HREF Y channel output G
21
 R
22
 G
23
 R
24
···
-
 UV channel tri-state. 
2. 8-bit Format (Total 292 HREFs) 
-
 1st HREF Y channel output unstable data. 
-
 2nd HREF Y channel output B
11
 G
21
 R
22
 G
12
···
-
 3rd HREF Y channel output B
31
 G
21
 R
22
 G
32
···
-
 PCLK timing is doubled and PCLK rising edge latch data bus. UV channel tri-state. Every line data output twice. 
3. 4-bit Nibble Mode Output Format 
-
 Uses higher 4 bits of Y port (Y[7:4]) as output port. 
-
 Supports YCrCb/RGB data, ITU-601/ITU-656 timing, Color/B&W. 
-
 Output sequence: High order 4 bits followed by lower order 4 bits  
Y0
H
 Y0
L
 Y1
H
 Y1
L
···
U0
H
 U0
L
 V0
H
 V0
L
···
For B/W or one-line RGB raw data, the output data clock speed is doubled. For color YUV, output clock is four times that of the 16-bit 
output data. In color mode, sensor must be set to 8-bit mode, and the nibble timing, clock divided by 2. 
Output sequence: U0
H
 U0
L
 Y0
H
 Y0
L
 V0
H
 V0
L
 Y1
H
 Y1
L
···
1.2.7 
The OV6630/OV6130 can be programmed to operate in slave mode 
(COMI[6] = 1, default is master mode). HSYNC and VSYNC output 
signals are provided.  
When used as a slave device, the external master must provide the 
following clocks to OV6630/OV6130 imager: 
1. System clock CLK to XCLK1 pin 
2. Horizontal sync, HSYNC, to CHSYNC pin, positive assertion 
3. Vertical frame sync, VSYNC, to VSYNC pin, positive assertion 
In slave mode, the OV6630/OV6130 tri-states CHSYNC (pin 42) and 
VSYNC (pin 16) output pins, and used as input pins. To synchronize 
multiple devices, OV6630/OV6130 uses external system clock, CLK, 
to synchronize external horizontal sync, HSYNC, which is then used 
to synchronize external vertical frame sync, VSYNC. See Figure 6. 
Slave Mode External Sync Timing for timing considerations. 
Slave Mode Operation 
1.2.8 
OV6630/OV6130 supports frame. FREX (pin 4) is asserted by an 
external master device to set exposure time. The pixel array is quickly 
pre-charged when FREX is set to “1”. OV6630/OV6130 captures the 
image in the time period when FREX remains high. The video data 
stream is delivered to output port in a line-by-line manner after FREX 
switches to “0”. 
Frame Exposure Mode 
It should be noted that FREX must remain high long enough to ensure 
the entire image array has been pre-charged. 
When data is being output from OV6630/OV6130, care must be taken 
so as not to expose the image array to light. This may affect the 
integrity of the image data captured. A mechanical shutter synchro-
nized with the frame exposure rate can be used to minimize this 
situation. The timing of frame exposure is shown in Figure 7. Frame 
Exposure Timing below. 
1.2.9 
OV6630/OV6130 includes a RESET pin (pin 2) that forces a 
complete hardware reset when it is pulled high (VCC). 
OV6630/OV6130 clears all registers and resets to their default values 
when a hardware reset occurs. Reset can also be initiated through the 
I
2
C interface. 
Reset  
1.2.10 
Two methods are available to place OV6630/OV6130 into power-
down mode: hardware power down and I
C software power down. 
To initiate hardware power down, the PWDN pin (pin 9) must be tied 
to high (+3.3VDC). When this occurs, OV6630/OV6130 internal 
device clock is halted and all internal counters are reset. The current 
draw is less than 10
μ
A in this standby mode. 
Power Down Mode