參數(shù)資料
型號(hào)： AK4703
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： AV SCART switch
中文描述： 影音SCART開(kāi)關(guān)
文件頁(yè)數(shù)： 16/38頁(yè)
文件大小： 351K
代理商： AK4703
ASAHI KASEI
AKM CONFIDENTIAL
[AK4703]
Rev. 0.1
2004/03
- 16 -
3.
Video Block
Video Switch Control
The AK4703 has switches for TV, VCR and RF modulator. Each switch can be controlled via registers independently.
When AUTO bit = “1” or STBY bit = “1”, these switches setting is ignored and set to fixed configuration (loop-through
mode). Please refer the auto setup mode and standby mode.
(04H: D2-D0)
Source of
TVVOUT pin
Shutdown
000
(Hi-Z)
Encoder CVBS /RGB
001
ENCV pin
Encoder Y/C 1
010
ENCV pin
Encoder Y/C 2
011
ENCY pin
VCR (default)
100
VCRVIN pin
TV CVBS
101
TVVIN pin
(Reserved)
110
-
(Reserved)
111
-
Table 6. TV video output (Please refer notes)
(04H: D5-D3)
Mode
VTV2-0 bit
Source of
TVRC pin
(Hi-Z)
ENCRC pin
ENCRC pin
ENCC pin
VCRRC pin
(Hi-Z)
-
-
Source of
TVG pin
(Hi-Z)
ENCG pin
Hi-Z
Hi-Z
VCRG pin
(Hi-Z)
-
-
Source of
TVB pin
(Hi-Z)
ENCB pin
(Hi-Z)
(Hi-Z)
VCRB pin
(Hi-Z)
-
-
Mode
VVCR2-0 bit
Source of
VCRVOUT pin
(Hi-Z)
ENCV pin
ENCY pin
TVVIN pin
VCRVIN pin
-
-
-
Source of
VCRC pin
(Hi-Z)
ENCRC pin
ENCC pin
(Hi-Z)
VCRRC pin
-
-
-
Shutdown
000
001
010
011
100
101
110
111
Encoder CVBS or Y/C 1
Encoder CVBS or Y/C 2
TV CVBS (default)
VCR
(Reserved)
(Reserved)
(Reserved)
Table 7. VCR video output (Please refer notes)
(04H: D7-D6)
Mode
VRF1-0 bit
00
Source of RFV pin
ENCV pin
ENCG pin
(Note 2)
VCRVIN pin
(Hi-Z)
Encoder CVBS1
Encoder CVBS2
01
VCR (Default)
Shutdown
10
11
Table 8. RF video output
Note 1. When input the video signal via ENCRC pin or VCRRC pin, set CLAMP1-0 bits respectively.
Note 2. When VTV2-0 bit = “001”, TVG bit = “1” and VRF1-0 bit = “01”, RFV pin output is same as TVG pin
output (Encoder G).
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