adv7180 Analog Devices, Inc., adv7180 Datasheet - Page 45

• Manufacturer Part Number: adv7180
• Description: 10-bit, 4 X Oversampling Sdtv Video Decoder
• Manufacturer: Analog Devices, Inc.

PVS, Polarity VS, Address 0x37 [5]
The polarity of the VS pin can be inverted using the PVS bit.
When PVS is 0 (default), VS is active high.
When PVS is 1, VS is active low.
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.
When PF is 0 (default), FIELD is active high.
When PF is 1, FIELD is active low.
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
VIDEO
VIDEO
OUTPUT
OUTPUT
FIELD
FIELD
VIDEO
VIDEO
HS
VS
HS
VS
H
V
H
V
F
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
Figure 33. NTSC Default, ITU-R BT.656 (the Polarity of H, V, and F is Embedded in the Data)
1
1
264
Figure 34. NTSC Typical VSYNC/FIELD Positions Using Register Writes in Table 61
264
2
NFTOG[4:0] = 0x3
2
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
Rev. B | Page 45 of 112
6
269
269
7
7
270
270
8
8
271
NVEND[4:0] = 0x3
NVEND[4:0] = 0x3
Table 61. User Settings for NTSC (See Figure 34)
Register
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0xE5
0xE6
0xE7
271
NVEND[4:0] = 0x4
9
9
NVEND[4:0] = 0x4
272
272
10
10
273
273
11
11
274
274
12
NFTOG[4:0] = 0x5
12
NFTOG[4:0] = 0x5
275
Register Name
Polarity
VS/FIELD Control 1
VS/FIELD Control 2
VS/FIELD Control 3
HS Position Control 1
HS Position Control 2
HS Position Control 3
NTSV V Bit Begin
NTSC V Bit End
NTSC F Bit Toggle
275
13
13
276
276
1
BT.656-4
REG 0x04, BIT 7 = 1
14
19
277
1
BT.656-4
REG 0x04, BIT 7 = 1
283
15
20
284
284
21
21
285
285
22
22
Write
0x1A
0x81
0x84
0x00
0x00
0x7D
0xA1
0x41
0x84
0x06
ADV7180