AK4706 Datasheet, PDF (29/53 Pages) Asahi Kasei Microsystems – 2ch 24bit DAC with AV Switch & HD/SD Video Filter

ASAHI KASEI
[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)
Mode
Shutdown
Encoder CVBS+RGB
or Encoder YPbPr
Encoder Y/C 1
Encoder Y/C 2
VCR (default)
TV CVBS
(reserved)
(reserved)
VTV2-0
bit
000
001
010
011
100
101
110
111
Source of
TVVOUT pin
(Hi-Z)
ENCV pin
(Encoder CVBS
or Y)
ENCV pin
(Encoder Y)
ENCY pin
(Encoder Y)
VCRVIN pin
(VCR CVBS
or Y)
TVVIN pin
(TV CVBS)
-
-
Source of
TVRC pin
(Hi-Z)
ENCRC pin
(Encoder Red,C
or Pb)
ENCRC pin
(Encoder C)
ENCC pin
(Encoder C)
VCRRC pin
(VCR Red,C
or Pb)
(Hi-Z)
-
-
Table 14. TV video output
Source of
TVG pin
(Hi-Z)
ENCG pin
(Encoder Green
or Y)
(Hi-Z)
Source of
TVB pin
(Hi-Z)
ENCB pin
(Encoder Blue
or Pr)
(Hi-Z)
(Hi-Z)
(Hi-Z)
VCRG pin
(VCR Green
or Y)
VCRB pin
(VCR Blue
or Pr)
(Hi-Z)
(Hi-Z)
-
-
-
-
(Refer Note 23, Note 24)
(04H: D5-D3)
Mode
Shutdown
Encoder CVBS or Y/C 1
Encoder CVBS or Y/C 2
TV CVBS (default)
VCR
(reserved)
(reserved)
(reserved)
VVCR2-0 bit
000
001
010
011
100
101
110
111
Source of
VCRVOUT pin
(Hi-Z)
ENCV pin
(Encoder CVBS
or Y)
ENCY pin
(Encoder CVBS
or Y)
TVVIN pin
(TV CVBS)
VCRVIN pin
(VCR CVBS)
-
-
-
Table 15. VCR video output
Source of
VCRC pin
(Hi-Z)
ENCRC pin
(Encoder C)
ENCC pin
(Encoder C)
(Hi-Z)
VCRRC pin
(VCR C)
-
-
-
(Refer Note 23)
MS0507-E-00
- 29 -
2006/05