參數(shù)資料
型號(hào): 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(yè)數(shù): 70/99頁(yè)
文件大?。?/td> 1757K
代理商: AK8850
ASAHI KASEI
[AK8850]
VERTICAL BLANKING LENGTH REGISTER ( R / W ) [ SUB ADDRESS 0x02 ]
Register to set VBI interval.
Sub Address 0x02
Default Value : 0x14
bit 7
bit 6
bit 5
bit 3
bit 2
bit 1
VBIDEC
TRSVSEL
HALFSU
VBIL4
VBIL3
VBIL2
VBIL1
VBIL0
Default Value
0
1
0
1
0
bit 4
bit 0
Vertical Blanking Register Definition
BIT
Register Name
R/W
Definition
bit 0
-
bit 4
VBIL4
VBIL0
Vertical
blanking
Information
Length bit
R/W
Set the VBI interval
Default value is 20 (decimal)
The value of VBI[4:0] must be set more than 10.
i.e., Active video starts from Line-21
bit 5
HALFSU
Half Setup bit
R/W
Set the setup function for the first active line of
the 2nd field.
0 : 0.5H of 2nd field is not made setup process.
1 : 0.5H of 2nd field is made setup process.
TRSVSEL
Time Reference Signal V Select
bit
R/W
Set the V-bit transition timing for EAV/SAV.
NTSC, 525 Component
TRSVSEL = 0 :
Line 1-9 / Line264-Line272 : V=1
Other V=0
TRSVSEL = 1:
Line 1-19 / Line 264-Line282 V=1
Other V=0
625 Sytem : V-bit setting should reflect
TRSVSEL-bit setting
bit 7
VBIDEC
VBI Decode bit
R/W
Output data while the VBI Interval.
C = 0x80
0 : Y = 0x10
1 : Y = input data(same as B/W process)
C = 0x80
bit 6
For details, please refer to section 7-4-10 VERTICAL BLANKING INTERVAL.
Rev.0
72
2003/01
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