ADV7180
Data Sheet
NVEND[4:0], NTSC VSYNC End, Address 0xE6[4:0]
NFTOG[4:0], NTSC Field Toggle, Address 0xE7[4:0]
The default value of NVEND is 00100, indicating the NTSC
VSYNC end position.
The default value of NFTOG is 00011, indicating the NTSC
field toggle position.
For all NTSC/PAL VSYNC timing controls, both the V bit in
the AV code and the VSYNC signal on the VS pin are modified.
For all NTSC/PAL field timing controls, both the F bit in the
AV code and the field signal on the FIELD pin are modified.
NFTOGDELO, NTSC FIELD Toggle Delay on Odd Field,
Address 0xE7[7]
1
NFTOGSIGN
0
When NFTOGDELO is 0 (default), there is no delay.
ADVANCE TOGGLE OF
FIELD BY NFTOG[4:0]
DELAY TOGGLE OF
FIELD BY NFTOG[4:0]
Setting NFTOGDELO to 1 delays the field toggle/transition on
an odd field by a line relative to NFTOG.
NOT VALID FOR USER
PROGRAMMING
NFTOGDELE, NTSC Field Toggle Delay on Even Field,
Address 0xE7[6]
ODD FIELD?
YES
NO
When NFTOGDELE is 0, there is no delay.
Setting NFTOGDELE to 1 (default) delays the field toggle/
transition on an even field by a line relative to NFTOG.
NFTOGDELO
1
NFTOGDELE
1
NFTOGSIGN, NTSC Field Toggle Sign, Address 0xE7[5]
0
0
Setting NFTOGSIGN to 0 delays the field transition. Set for
user manual programming.
ADDITIONAL
DELAY BY
1 LINE
ADDITIONAL
DELAY BY
1 LINE
Setting NFTOGSIGN to 1 (default) advances the field transition
(not recommended for user programming).
FIELD
TOGGLE
Figure 40. NTSC FIELD Toggle
FIELD 1
622
623
624
625
1
2
3
4
5
6
7
8
9
10
22
23
24
OUTPUT
VIDEO
H
V
PVBEG[4:0] = 0x05
PVEND[4:0] = 0x04
F
PFTOG[4:0] = 0x03
FIELD 2
314
310
311
312
313
315
316
317
318
319
320
321 322
335
336
337
OUTPUT
VIDEO
H
V
PVBEG[4:0] = 0x05
PVEND[4:0] = 0x04
F
PFTOG[4:0] = 0x03
Figure 41. PAL Default, ITU-R BT.656 (the Polarity of H, V, and F Is Embedded in the Data)
Rev. G | Page 50 of 120
ADI [ ADI ]
