adv7181b Analog Devices, Inc., adv7181b Datasheet - Page 40

• Manufacturer Part Number: adv7181b
• Description: Multiformat Sdtv Video Decoder
• Manufacturer: Analog Devices, Inc.

ADV7181B
PF Polarity FIELD, Address 0x37[3]
The polarity of the FIELD pin can be inverted using the PF bit.
The FIELD pin can be inverted using the PF bit.
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
VIDEO
VIDEO
VIDEO
VIDEO
FIELD
FIELD
HS
VS
HS
VS
H
H
V
F
V
F
1
APPLIES IF NEWAVMODE = 0:
MUST BE MANUALLY SHIFTED IF NEWAVMODE = 1.
262
262
NVBEG[4:0] = 0x5
525
525
NVBEG[4:0] = 0x5
263
263
1
1
264
264
Figure 20. NTSC Default (BT.656). The Polarity of H, V, and F is Embedded in the Data.
NFTOG[4:0] = 0x3
2
2
Figure 21. NTSC Typical Vsync/Field Positions Using Register Writes in Table 55
265
NFTOG[4:0] = 0x3
265
3
3
266
266
4
FIELD 1
FIELD 2
FIELD 1
FIELD 2
4
267
267
5
5
268
268
NVBEG[4:0] = 0x0
NVBEG[4:0] = 0x0
6
6
Rev. B | Page 40 of 100
269
269
7
7
270
270
8
8
When PF is 0 (default), FIELD is active high.
When PF is 1, FIELD is active low.
271
271
NVEND[4:0] = 0x4
NVEND[4:0] = 0x3
NVEND[4:0] = 0x3
9
9
NVEND[4:0] = 0x4
272
272
10
10
273
273
11
11
274
274
12
12
NFTOG[4:0] = 0x5
NFTOG[4:0] = 0x5
275
275
13
13
276
1
276
BT.656-4
REG 0x04, BIT 7 = 1
14
19
1
BT.656-4
REG 0x04, BIT 7 = 1
277
283
15
20
284
284
21
21
285
285
22
22