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Register Set
Version 1.3, September 15, 2003
Proprietary to OmniVision Technologies
21
Omni
ision
13
COMI
07
RW
Common Control I
Bit[7]:
AEC speed selection
0:
Normal
1:
Faster AEC correction
Bit[6]:
AEC speed/step selection
0:
Small steps (slow)
1:
Big steps (fast)
Bit[5]:
Banding filter ON/OFF
0:
OFF
1:
ON, set minimum exposure to 1/120s
Bit[4]:
Banding filter option
0:
Set to 0, if system clock is 48 MHz and the PLL is
ON.
1:
Set to 1, if system clock is 24 MHz and the PLL is ON
or if the system clock is 48 MHz and the PLL is OFF.
Bit[3]:
Reserved
Bit[2]:
AGC auto/manual control selection
0:
Manual
1:
Auto
Bit[1]:
AWB auto/manual control selection
0:
Manual
1:
Auto
Bit[0]:
Exposure control
0:
Manual
1:
Auto
14
COMJ
76
RW
Common Control J
Bit[7:6]:
AGC gain ceiling
00: 2x
01: 4x
10: 8x
11: 8x
Bit[5:4]:
Reserved
Bit[3]:
Auto banding filter
0:
Banding filter is always ON/OFF depending on
COMI[5] setting (see “COMI” on page 21)
1:
Automatically disable banding filter if light is low
Bit[2]:
VSYNC drop option
0:
VSYNC is always output
1:
VSYNC is dropped if frame data is dropped
Bit[1]:
Frame data drop option
0:
Disable data drop
1:
Drop data frame if exposure is not within tolerance.
In AEC mode, data is normally dropped when data is
out of range
Bit[0]:
Freeze current Exposure and Gain values
0:
Normal
1:
Freeze
Table 11
Device Control Register List
Address
(Hex)
Register
Name
Default
(Hex)
R/W
Description
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