參數(shù)資料
型號: ADV7188
廠商: Analog Devices, Inc.
英文描述: Multiformat SDTV Video Decoder with Fast Switch Overlay Support
中文描述: 標清多格式視頻解碼器支持快速開關重疊
文件頁數(shù): 44/112頁
文件大?。?/td> 943K
代理商: ADV7188
ADV7188
Rev. 0 | Page 44 of 112
NVBEG[4:0] =0x0
NVEND[4:0] = 0x3
0
FIELD 1
OUTPUT
VIDEO
OFIELD
OUTHS
NFTOG[4:0] = 0x5
OUTPVS
525
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
21
22
FIELD 2
OVIDEO
FIELD
OUTPUT
HS
OUTPUT
OUTPVS
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
284
285
NVBEG[4:0] = 0x0
NVEND[4:0] = 0x3
NFTOG[4:0] = 0x5
Figure 28. NTSC Typical VSYNC/Field Positions Using Register Writes in Table 62
0
ADVANCE BEGIN OF
VSDELAY BEGIN OF
VSYNC BEGIN
NVBEGSIGN
ODD FIELD
0
1
NO
YES
NVBEGDELO
VSBHO
DELAY BY
1 LINE
A0.5 LINE
1
0
1
0
NVBEGDELE
VSBHE
DELAY BY
1 LINE
A0.5 LINE
1
0
1
0
NPROGRAMMING
Figure 29. NTSC VSYNC Begin
NVBEGDELO NTSC VSYNC Begin Delay on Odd Field,
Address 0xE5 [7]
0 (default)—No delay.
1—Delays VSYNC going high on an odd field by a line relative
to NVBEG.
NVBEGDELE NTSC VSYNC Begin Delay on Even Field,
Address 0xE5 [6]
0 (default)—No delay.
1—Delays VSYNC going high on an even field by a line relative
to NVBEG.
NVBEGSIGN NTSC VSYNC Begin Sign, Address 0xE5 [5]
0—Delays the start of VSYNC. Set for user manual
programming.
1 (default)—Advances the start of VSYNC. Not recommended
for user programming.
NVBEG[4:0] NTSC VSYNC Begin, Address 0xE5 [4:0]
The default value of NVBEG is 00101, indicating the NTSC
VSYNC begin position. For all NTSC/PAL VSYNC timing
controls, both the V bit in the AV code and the VSYNC on the
VS pin are modified.
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