AK8856 Datasheet, PDF (92/105 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Decoder

ASAHI KASEI
[ AK8856 ]
Contrast Control Register (R/W) [Sub Address 0x06]
This register is for Contrast Adjustment, and the default value (no adjustment) is 0x80.
Sub Address 0x06
bit 7
bit 6
CONT7
CONT6
1
0
bit 5
CONT5
0
bit 4
bit 3
CONT4
CONT3
Default Value
0
0
bit 2
CONT2
0
Default Value: 0x80
bit 1
bit 0
CONT1
CONT0
0
0
Contrast Control Register Definition
BIT Register Name
bit 0
CONT0
~
~
bit 7
CONT7
Contrast Control
R/W
Definition
Contrast Adjustment: resolution is 1 / 256 step and
R/W
the range is from 0 to 255 / 128.
Default value is 0x80.
Brightness Control Register (R/W) [Sub Address 0x07]
This register is for Brightness Adjustment and the default value (no adjustment) is 0x00.
Sub Address 0x07
bit 7
bit 6
BR7
BR6
0
0
bit 5
BR5
0
bit 4
bit 3
BR4
BR3
Default Value
0
0
bit 2
BR2
0
Default Value: 0x00
bit 1
bit 0
BR1
BR0
0
0
Brightness Control Register Definition
BIT Register Name
bit 0
BR0
~
~
Brightness Control
bit 7
BR7
R/W
Definition
R/W Brightness Adjustment: Two’s complement format
Rev-01
92
2007/03