MCM20027 Motorola, MCM20027 Datasheet - Page 44

• Manufacturer Part Number: MCM20027
• Description: Color SXGA Digital Image Sensor 1280 x 1024 pixel progressive scan solid state image sensor with integrated CDS/PGA/ADC / digital programming / control
• Manufacturer: Motorola

MOTOROLA
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
13.2 Gain Calibration Block
The
and the
24, allows the user to set a global gain via two 6 bit reg-
ister which are applied universally to all the pixel out-
puts. This enables the user to account for varying light
conditions.The Gain range depends on what the Expo-
sure Gain Mode
Address
Address
Number
msb (7)
msb (7)
Exposure PGA Global Gain Register A; Table 23
7 - 6
5 - 0
13
10
Bit
x
0
x
h
h
Exposure PGA Global Gain Register B; Table
(PGA Gain Mode; Table
Function
Unused
Frame
Clamp
Rate
Gain
adp
x
6
6
Table 22. Programable Bias Generator Control register
1
0
Unused
PGA Gain Mode
Raw Gain Mode [gg1
Raw Gain Mode [gg1
32)
(Range 0.696 - 2.736)
Linear Gain Mode -----> Gain = 0.6956 + (0.0434 * gg1
(Range 0.696 - 2.736)
Linear 2 Gain Mode ----> Gain = 0.484 +(0.12 x gg1
(Range 0.484 - 7.488)
b
b
Table 23. Exposure PGA Global Gain Register A
gg1[5]
= Full Current (Power) consumption [80/100]
= Half Current (Power) consumption [40/50]
gdp
5
5
Programable Bias Generator Control
Exposure PGA Global Gain A
25)is set. If
gg1[4]
egb
4
4
d
d
= 0-32
= 33-63
Description
d
The Exposure gain mode is set at either Raw or Linear,
then
and
are both utilized. But if it is set at Linear 2 gain mode,
then only
23
(
] ---> Gain = 0.6956 + (0.02174* gg1
d
gg1[3]
] --> Gain = 1.391+ (0.0434* (gg1
ega
is used.
Exposure PGA Global Gain Register B; Table 24
3
3
Exposure PGA Global Gain Register A; Table 23
Exposure PGA Global Gain Register A; Table
gg1[2]
wbp
Revision 8.0 - 28 November 2001 :
2
2
d
)
d
)
gg1[1]
cdp
ImageMOS
ImageMOS
1
1
d
-
d
)
Default
Default
001110
gg1[0]
Reset
State
lsb (0)
lsb (0)
0E
00
fcp
0
xx
b
h
h
MCM20027
44