參數(shù)資料
型號(hào)： MCM20027IBBL
廠商： MOTOROLA INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： Color SXGA Digital Image Sensor 1280 x 1024 pixel progressive scan solid state image sensor with integrated CDS/PGA/ADC, digital programming, control
中文描述： SPECIALTY ANALOG CIRCUIT, CQCC48
封裝： CERAMIC, LCC-48
文件頁(yè)數(shù)： 17/74頁(yè)
文件大?。?/td> 973K
代理商： MCM20027IBBL
Revision 8.0 - 28 November 2001 : MCM20027
MOTOROLA
17
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
ImageMOS
7.4.3 Gain Modes
There exists different gain modes that are available
when the sensor is performing White Balance and Ex-
posure gain. The Gain mode utilized for White balance
and Exposure gain can be selected by the user writing
different values to the register described in
Table 25,
“PGA Gain Mode,” on page 45
.
There are two different Gain modes for White Balance
and there are three different Gain modes for the Expo-
sure gain refer to
White Balance Gain modes and Gain
Formulas; Table 3
and
Exposure Gain modes and Gain
Formulas; Table 4
for more info.
NOTE!! The Diagrams above illustrates how the Color Gain Registers apply the gain onto each individual
color pixel data:
Register
No
Register Name
Variable
Gain
Modes
Gain
Steps
Gain Formula
Gain
Range
00h
DPGA Color 1 Gain
Register; Table 8
cg1
RAW
0-32
0.6956 + (0.02174* cg1
d
)
0.69-1.39
33-63
1.391+ (0.0434* (cg1
d
-32)
1.39-2.74
LINEAR
0-47
0.6956 +(0.0434 x cg1
d
)
0.69-2.74
01h
DPGA Color 2 Gain
Register; Table 9
cg2
RAW
0-32
0.6956 + (0.02174* cg2
d
)
0.69-1.39
33-63
1.391+ (0.0434* (cg2
d
-32)
1.39-2.74
LINEAR
0-47
0.6956 +(0.0434 x cg2
d
)
0.69-2.74
02h
DPGA Color 3 Gain
Register; Table 10
cg3
RAW
0-32
0.6956 + (0.02174* cg3
d
)
0.69-1.39
33-63
1.391+ (0.0434* (cg3
d
-32)
1.39-2.74
LINEAR
0-47
0.6956 +(0.0434 x cg3
d
)
0.69-2.74
03h
DPGA Color 4 Gain
Register; Table 11
cg4
RAW
0-32
0.6956 + (0.02174* cg4
d
)
0.69-1.39
33-63
1.391+ (0.0434* (cg4
d
-32)
1.39-2.74
LINEAR
0-47
0.6956 +(0.0434 x cg4
d
)
0.69-2.74
Table 3. White Balance Gain modes and Gain Formulas
Green-Red Pixel
Data
DPGA Color 1 Gain
Register
Red Pixel Data
DPGA Color 2 Gain
Register
Blue Pixel Data
DPGA Color 3 Gain
Register
Green-Blue
Pixel Data
DPGA Color 4 Gain
Register
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