參數(shù)資料
型號(hào): ADV7181
廠商: Analog Devices, Inc.
英文描述: Multiformat SDTV Video Decoder
中文描述: 標(biāo)清多格式視頻解碼器
文件頁(yè)數(shù): 40/96頁(yè)
文件大小: 873K
代理商: ADV7181
ADV7181B
PF Polarity FIELD, Address 0x37 [3]
Rev. 0 | Page 40 of 96
The polarity of the FIELD pin can be inverted using the PF bit.
FIELD pin can be inverted using the PF bit.
When PF is 0 (default), FIELD is active high.
When PF is 1, FIELD is active low.
0
OVIDEO
FIELD 1
FIELD 2
H
V
F
OVIDEO
H
V
F
525
1
2
3
4
5
6
7
8
9
10
11
12
13
19
20
21
22
NVBEG[4:0] = 0x5
NVBEG[4:0] = 0x5
NVEND[4:0] = 0x4
NVEND[4:0] = 0x4
NFTOG[4:0] = 0x3
NFTOG[4:0] = 0x3
*REG 0x04, BIT 7 = 1
*REG 0x04, BIT 7 = 1
*MUST BE MANUALLY SHIFTED IF NEWAVMODE = 1.
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
283
284
285
Figure 20. NTSC Default (BT.656). The polarity of H, V, and F is embedded in the data.
NVBEG[4:0] = 0x0
NVEND[4:0] = 0x3
0
FIELD 1
OVIDEO
OFIELD
OUTHS
NFTOG[4:0] = 0x5
VS
OUTPUT
525
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
21
22
FIELD 2
OVIDEO
OFIELD
OUTHS
VS
OUTPUT
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 21. NTSC Typical VSync/Field Positions Using Register Writes in Table 54
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