AK8856 Datasheet, PDF (30/105 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Decoder

ASAHI KASEI
[ AK8856 ]
Auto Color Control (ACC)
This function is used to adjust the Color Burst level of the input signal to a proper level (NTSC : 286mV / PAL:
300mV). The Input Color signal level is determined by the Color Burst signal. ACC gain is 20dB maximum. ACC
is turned ON / OFF by setting the ACC-bit of Control 2 Register (R/W) [Sub Address 0x04] .
Sub Address 0x04
bit 7
bit 6
CNTSEL
NSIGDEF
0
0
bit 5
ODEV
0
bit 4
bit 3
FRMRT1
FRMRT0
Default Value
0
0
bit 2
COLKIL
0
Default Value: 0x00
bit 1
bit 0
ACC
AGC
0
0
[ACC] bit
The [ACC] bit selects enable / disable of ACC and time constant.
[ACC]-bit
ACC Setting
0
Disable
1
Enable
Condition
The ACC function operates independently from the Color Saturation Adjust function (when ACC is enabled,
Color Saturation adjustment is performed on the signal, which is adjusted to a proper level by ACC).
Rev-01
30
2007/03