參數(shù)資料
型號： AK4706
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 2ch 24bit DAC with AV Switch & HD/SD Video Filter
中文描述： 2通道24位DAC，帶有AV系列開關(guān)
文件頁數(shù)： 29/53頁
文件大?。?/td> 597K
代理商： AK4706
ASAHI KASEI
[AK4706]
MS0507-E-00
2006/05
- 29 -
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
TVVOUT pin
Shutdown
000
(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)
(reserved)
110
-
(reserved)
111
-
Mode
Source of
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)
Source of
TVG pin
(Hi-Z)
ENCG pin
(Encoder Green
or Y)
Source of
TVB pin
(Hi-Z)
ENCB pin
(Encoder Blue
or Pr)
Encoder CVBS+RGB
or Encoder YPbPr
001
Encoder Y/C 1
010
(Hi-Z)
(Hi-Z)
Encoder Y/C 2
011
(Hi-Z)
(Hi-Z)
VCR (default)
100
VCRG pin
(VCR Green
or Y)
VCRB pin
(VCR Blue
or Pr)
TV CVBS
101
(Hi-Z)
(Hi-Z)
(Hi-Z)
-
-
-
-
-
-
(Refer Note 23, Note 24)
Table 14. 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 (default)
011
(Hi-Z)
VCR
100
VCRRC pin
(VCR C)
-
-
-
(Refer Note 23)
(reserved)
(reserved)
(reserved)
101
110
111
Table 15. VCR video output
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