參數(shù)資料
型號: AK8850
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: NTSC Digital Video Decoder
中文描述: NTSC制式數(shù)字視頻解碼器
文件頁數(shù): 85/99頁
文件大?。?/td> 1757K
代理商: AK8850
ASAHI KASEI
[AK8850]
REQUEST VBI INFO REGISTER ( W ) [ SUB ADDRESS : 0x1F ]
This register controls VBI operations, including Closed- Caption, Extended data, VBID and WSS.
The AK8850 is put into a wait condition for each data when “ 1 “ is written into each bit.
When the decoding is completed, “ 1” is written into each bit of the [ STATUS 2 REGISTER ] and the decoded data are
stored in the Closed-Caption Data1 / Data2,CCEXTENDED Data1 / Data2,VBID Data1 / Data2 and WSS Data1 / Data2
registers respectively.
Sub Address 0x1F
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Reserved
WSSRQ
VBIDRQ
EXTRQ
CCRQ
ASPECTRQ
Default Value
0
Request VBI Info Register Definition
BIT
Register Name
R/W
Definition
bit 0
ASPECTRQ
ASPECT Request bit
W
Request to decode ASPECT Signal
0 :
1 : Request
bit 1
CCRQ
Closed Caption Request bit
W
Request to decode Closed Caption data
0 :
1 : Request
bit 2
W
EXTRQ
Extended Data Request bit
Request to decode Extended data
0 :
1 : Request
bit 3
VBIDRQ
VBID Request bit
W
Request to decode VBID data
0 :
1 : Request
bit 4
WSSRQ
WSS Request bit
W
Request to decode WSS data
0 :
1 : Request
bit 5
bit 7
Reserved
Reserved bit
W
Reserved bit
Rev.0
86
2003/01
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