[AK4706]
3. Video Block
■ Video Switch Control
The AK4706 has switches for TV, VCR and RF modulator. Each switches can be controlled via registers independently.
When AUTO bit = “1” or STBY bit = “1”, these switch setting are ignored and set to fixed configuration (loop-through
mode). Please refer the auto setup mode and standby mode.
(04H: D2-D0)
VTV2-0
bit
000
Source of
TVVOUT pin
(Hi-Z)
Source of
TVRC pin
(Hi-Z)
Source of
TVG pin
(Hi-Z)
Source of
TVB pin
(Hi-Z)
Mode
Shutdown
ENCV pin
(Encoder CVBS
or Y)
ENCRC pin
(Encoder Red,C
or Pb)
ENCG pin
(Encoder Green
or Y)
ENCB pin
(Encoder Blue
or Pr)
Encoder CVBS+RGB
or Encoder YPbPr
001
ENCV pin
(Encoder Y)
ENCY pin
(Encoder Y)
VCRVIN pin
(VCR CVBS
or Y)
TVVIN pin
(TV CVBS)
-
ENCRC pin
(Encoder C)
ENCC pin
(Encoder C)
VCRRC pin
(VCR Red,C
or Pb)
Encoder Y/C 1
Encoder Y/C 2
010
011
(Hi-Z)
(Hi-Z)
(Hi-Z)
(Hi-Z)
VCRG pin
(VCR Green
or Y)
VCRB pin
(VCR Blue
or Pr)
VCR (default)
TV CVBS
100
101
(Hi-Z)
(Hi-Z)
(Hi-Z)
(reserved)
(reserved)
110
111
-
-
-
-
-
-
-
(Refer Note 23, Note 24)
Table 14. TV video output
(04H: D5-D3)
Source of
VCRVOUT pin
(Hi-Z)
ENCV pin
(Encoder CVBS
or Y)
ENCY pin
(Encoder CVBS
or Y)
Source of
VCRC pin
(Hi-Z)
Mode
VVCR2-0 bit
Shutdown
000
001
ENCRC pin
(Encoder C)
Encoder CVBS or Y/C 1
Encoder CVBS or Y/C 2
ENCC pin
(Encoder C)
010
TVVIN pin
(TV CVBS)
VCRVIN pin
(VCR CVBS)
-
TV CVBS (default)
VCR
011
100
(Hi-Z)
VCRRC pin
(VCR C)
(reserved)
(reserved)
(reserved)
101
110
111
-
-
-
-
-
(Refer Note 23)
Table 15. VCR video output
MS0507-E-01
2010/09
- 29 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
