參數(shù)資料
型號(hào): AK4703VQ
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): 18/38頁(yè)
文件大?。?/td> 351K
代理商: AK4703VQ
ASAHI KASEI
AKM CONFIDENTIAL
[AK4703]
Rev. 0.1
2004/03
- 18 -
Clamp and DC-restore circuit control (06H: D6-D5, D3-D2)
Each CVBS and Y input has the sync tip clamp circuit. The sync tip voltage at each output is 0.7V (typ). This corresponds
0.35V (typ) at the SCART connector when matched by 75
resistors. The CLAMP1-0 bits select the input circuit for
ENCRC pin (Encoder Red/Chroma) and VCRRC pin (VCR Red/Chroma) respectively. VCLP1-0 bits select the source of
DC-restore circuit.
CLAMP1: Encoder Red/Chroma (ENCRC pin) input clamp control
0: DC restore clamp active (for RED signal. Default)
1: Biased (for Chroma signal.)
CLAMP0: VCR R/C (VCRRC pin) input clamp control
0: DC restore clamp active (for RED signal)
1: Biased (for Chroma signal. Default.)
VCLP1-0: DC restore source control
When the AUTO bit = “1”, the source is fixed to VCRVIN.
VCLP1 bit
VCLP0 bit
Sync Source of DC Restore
0
0
0
1
1
0
1
1
Table 10. DC restore source control
ENCV (Default)
ENCY
VCRVIN
(Reserved)
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