LR38630 Datasheet, PDF (9/20 Pages) Sharp Electrionic Components – Digital Signal Processor for CIF CMOS Image Cameras

LR38630
ADDRESS NAME
0Ch
SH_MAX
EE_SPD
EE_RATIO
EE_LPF
0Dh SH_HOLD2
0Eh
SH_HOLD1
0Fh AGC_HOLD
10h OFSET_HOLD
11h
OFSET_LPF
WBFIX1
SEL_LPF
12h
KGBGR1
BITS
2
(7)
(6)
2
(5)
(4)
2
(3)
(2)
2
(1)
(0)
1
8
8
8
2
(4)
(3)
1
(2)
2
(1)
(0)
8
FUNCTION
Option of maximum electronic shutter speed in automatic.
Electronic exposure control.
00 : 1/9 900 s
01 : 1/4 950 s
10 : 1/1 980 s
11 : 1/1 100 s
Option of electronic shutter speed and AGC speed change.
00 : Shutter speed is changed by 10-19 pitches.
01 : Shutter speed is changed by 8-10 pitches.
1X : Shutter speed is changed by 1 pitch (the finest)
Window option of automatic electronic exposure control.
00 : Center weighted 1 01 : Center weighted 2
10 : No window
11 : Lower-position weighted
Option of time constant in electronic exposure control.
00 : Longer time constant 01 : Long time constant
1X : No time constant
MSB of fixed electronic shutter speed.
Lower bits of fixed electronic shutter speed.
Data between 000 and 149 can be set by address 0Dh and 0Eh.
Preset gain in making AGC OFF (EE_HOLD = 1X at address 03h).
Fixed optical black level (OFSET_AUTO =1 at address 03h).
Time constant option of automatic optical black level control.
00 : Longer time constant
01 : Long time constant
1X : No time constant
Option of automatic white balance control.
0 : Not accelerated 1 : Accelerated
Time constant option of automatic white balance control.
00 : Longer time constant
01 : Long time constant
1X : No time constant
The first target area of automatic white balance control in minus direction of high-
speed mode.
In the case that white balance control data is within (data of address 12h + data of
address 13h), high-speed mode control is completed and then changed to normal-
speed control mode.
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