
ASAHI KASEI 
[AK4702] 
MS0187-E-00 
2002/11 
- 28 - 
Addr 
04H 
Register Name 
Video Switch 
R/W 
default 
D7 
VRF1 
D6 
VRF0 
D5 
D4 
D3 
D2 
VTV2 
D1 
VTV1 
D0 
VTV0 
VVCR2 
VVCR1 
VVCR0 
R/W 
1 
0 
0 
1 
1 
1 
0 
0 
VTV0-2: selector for TV video output 
Mode 
Shutdown 
Encoder CVBS 
or RGB 
VTV2-0 
000 
TVVOUT 
Hi-Z 
Encoder CVBS 
ENCV 
Encoder 
Luminance 
ENCV 
Encoder 
Luminance 
ENCY 
VCR CVBS/Y 
VCRVIN 
TV CVBS/Y 
TVVIN 
- 
- 
Table 11. TV video output (see note) 
TVRC 
Hi-Z 
Encoder R 
ENCRC 
Encoder 
Chrominance 
ENCRC 
Encoder 
Chrominance 
ENCC 
VCR R/C 
VCRRC 
TVG 
Hi-Z 
Encoder G 
ENCG 
TVB 
Hi-Z 
Encoder B 
ENCB 
001 
Encoder Y/C 1 
010 
Hi-Z 
Hi-Z 
Encoder Y/C 2 
011 
Hi-Z 
Hi-Z 
VCR         
(default) 
100 
VCR G 
VCRG 
VCR B 
VCRB 
TV CVBS 
101 
Hi-Z 
Hi-Z 
Hi-Z 
(reserved) 
(reserved) 
110 
111 
- 
- 
- 
- 
- 
- 
VVCR0-2: selector for VCR video output 
Mode 
Shutdown 
Encoder CVBS 
or Y/C 1 
Encoder CVBS 
or Y/C 2 
TV CVBS 
(default) 
VVCR2-0 
000 
VCRVOUT 
Hi-Z 
Encoder CVBS/Y 
ENCV 
Encoder CVBS/Y 
ENCY 
TV CVBS 
TVVIN 
VCR CVBS/Y 
VCRVIN 
- 
- 
- 
VCRC 
Hi-Z 
001 
Encoder Chrominance 
ENCRC 
Encoder Chrominance 
ENCC 
010 
011 
Hi-Z 
VCR 
100 
VCR R/C 
VCRRC 
- 
- 
- 
(reserved) 
(reserved) 
(reserved) 
101 
110 
111 
Table 12. VCR video output (see note) 
VRF0-1: selector for RF video output 
Mode 
Encoder 
CVBS1 
Encoder 
CVBS2 
VCR      
(default) 
Shutdown 
VRF1-0 
RF CVBS 
Encoder CVBS1 
ENCV 
Encoder CVBS2 
ENCG (Note: 23) 
VCR 
VCRVIN 
Hi-Z 
00 
01 
10 
11 
Table 13. RF video output (see note) 
Note: 22: When input the video signal via ENCRC or VCRRC pin, set CLAMP1-0 bits respectively. 
  Note: 23 When VTV2-0=“001”, TVG=“1” and VRF1-0=“01”, RFV output is same as TVG (Encoder G).