MCM20027IBMN Freescale, MCM20027IBMN Datasheet - Page 17

• Manufacturer Part Number: MCM20027IBMN
• Manufacturer: Freescale
• Type: CMOSr

Specifications of MCM20027IBMN

• Sensor Image Color Type: Monochrome
• Sensor Image Size Range: >= 480,000Pixels
• Sensor Image Size: 1280x1024Pixels
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 40C
• Package Type: CLCC
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Revision 8.4 - 24 Oct 2002 :
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
“PGA Gain Mode,” on page
NOTE!! The Diagrams above illustrate how the Color Gain Registers apply the gain onto each individual
color pixel data:
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Register
Green-Red Pixel
Blue Pixel Data
00h
01h
02h
03h
No
Data
DPGA Color 1 Gain
DPGA Color 2 Gain
DPGA Color 3 Gain
DPGA Color 4 Gain
Register; Table 10
Register; Table 11
Register; Table 12
Register; Table 13
Register Name
DPGA Color 3 Gain
DPGA Color 1 Gain
MCM20027
Register
Register
45.
Table 3. White Balance Gain modes and Gain Formulas
Freescale Semiconductor, Inc.
For More Information On This Product,
Variable
cg1
cg2
cg3
cg4
Table 27,
Go to: www.freescale.com
LINEAR
LINEAR
LINEAR
LINEAR
Modes
Gain
RAW
RAW
RAW
RAW
There are two different Gain modes for White Balance
and there are three different Gain modes for the Expo-
sure gain refer to
Formulas; Table 3
Formulas; Table 4
Red Pixel Data
Green-Blue
Pixel Data
Steps
Gain
33-63
33-63
33-63
33-63
0-32
0-47
0-32
0-47
0-32
0-47
0-32
0-47
1.391+ (0.0434* (cg1
1.391+ (0.0434* (cg2
1.391+ (0.0434* (cg3
1.391+ (0.0434* (cg4
0.6956 + (0.02174* cg1
0.6956 + (0.02174* cg2
0.6956 + (0.02174* cg3
0.6956 + (0.02174* cg4
0.6956 +(0.0434 x cg1
0.6956 +(0.0434 x cg2
0.6956 +(0.0434 x cg3
0.6956 +(0.0434 x cg4
White Balance Gain modes and Gain
DPGA Color 4 Gain
DPGA Color 2 Gain
and
for more info.
Gain Formula
Register
Register
Exposure Gain modes and Gain
ImageMOS
ImageMOS
d
d
d
d
-32)
-32)
-32)
-32)
d
d
d
d
d
d
d
d
)
)
)
)
)
)
)
)
0.69-1.39
1.39-2.74
0.69-2.74
0.69-1.39
1.39-2.74
0.69-2.74
0.69-1.39
1.39-2.74
0.69-2.74
0.69-1.39
1.39-2.74
0.69-2.74
Range
Gain
MOTOROLA
17