參數(shù)資料
型號: AK4705
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 2ch 24bit DAC with AV SCART Switch
中文描述: 2通道24位DAC,具有影音SCART開關(guān)
文件頁數(shù): 26/50頁
文件大?。?/td> 660K
代理商: AK4705
[AK4705]
MS0451-E-01
2007/06
- 26 -
3. Video Block
Video Switch Control
The AK4705 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 to the auto setup mode and standby mode.
(04H: D2-D0)
VTV2-0
bit
TVVOUT pin
TVRC pin
Shutdown
000
(Hi-Z)
ENCV pin.
Encoder CVBS
or Y.
ENCV pin.
Encoder Y.
Encoder C.
ENCY pin.
Encoder Y.
Encoder C.
VCRVIN pin.
VCR CVBS
or Y.
TVVIN pin.
TV CVBS.
(reserved)
110
-
(reserved)
111
-
Mode
Source of
Source of
Source of
TVG pin
(Hi-Z)
ENCG pin.
Encoder Green
or Y.
Source of
TVB pin
(Hi-Z)
ENCB pin.
Encoder Blue
or Pr.
(Hi-Z)
ENCRC pin.
Encoder Red,C
or Pb.
ENCRC pin.
Encoder CVBS+RGB
or Encoder YPbPr
001
Encoder Y/C 1
010
(Hi-Z)
(Hi-Z)
Encoder Y/C 2
011
ENCC pin.
(Hi-Z)
(Hi-Z)
VCR
100
VCRRC pin.
VCR Red,C
or Pb.
VCRG pin.
VCR Green
or Y.
VCRB pin.
VCR Blue
or Pr.
(default)
TV CVBS
101
(Hi-Z)
(Hi-Z)
(Hi-Z)
-
-
-
-
-
-
(Note: 18, Note: 19)
Table 13. TV video output
(04H: D5-D3)
Mode
VVCR2-0 bit
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.
-
-
-
Source of
VCRC pin
(Hi-Z)
Shutdown
000
Encoder CVBS or Y/C
1
001
ENCRC pin.
Encoder C.
Encoder CVBS or Y/C
2
010
ENCC pin.
Encoder C.
TV CVBS
011
(Hi-Z)
(default)
VCR
100
VCRRC pin.
VCR C.
-
-
-
(Note: 18)
(reserved)
(reserved)
(reserved)
101
110
111
Table 14. VCR video output
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