Datasheet

2−16
2.20 Register Definitions
2.20.1 Video Input Source Selection #1 Register
Address 00h
Default 00h
7 6 5 4 3 2 1 0
Reserved Black output Reserved
Channel 1 source
selection
S-video selection
Channel 1 source selection:
0 = AIP1A selected (default)
1 = AIP1B selected
Table 2−10. Analog Channel and Video Mode Selection
INPUT(S) SELECTED
ADDRESS 00
INPUT(S) SELECTED
BIT 1 BIT 0
Composite AIP1A (default) 0 0
AIP1B 1 0
S-Video AIP1A (luma), AIP1B (chroma) x 1
Black output:
0 = Normal operation (default)
1 = Force black screen output (outputs synchronized)
a. Forced to 10h in normal mode
b. Forced to 01h in extended mode
2.20.2 Analog Channel Controls Register
Address 01h
Default 15h
7 6 5 4 3 2 1 0
Reserved 1 Automatic offset control Automatic gain control
Automatic offset control:
00 = Disabled
01 = Automatic offset enabled (default)
10 = Reserved
11 = Offset level frozen to the previously set value
Automatic gain control (AGC):
00 = Disabled (fixed gain value)
01 = AGC enabled (default)
10 = Reserved
11 = AGC frozen to the previously set value