![](http://datasheet.mmic.net.cn/310000/ADV7181_datasheet_16243938/ADV7181_86.png)
ADV7181B
Rev. 0 | Page 86 of 96
Bits
4
0
Subaddress
0xE6
Register
NTSC V Bit
End
Bit Description
NVEND[4:0]. How many lines after
l
COUNT
rollover to set V low.
NVENDSIGN
7
6
5
3
0
2
1
1
0
0
0
Comments
NTSC default (BT.656)
Notes
0
Set to low when manual
programming
Not suitable for user
programming
No delay
Additional delay by 1 line
1
0
1
NVENDDELE. Delay V bit going low
by one line relative to NVEND (even
field).
NVENDDELO. Delay V bit going low
by one line relative to NVEND (odd
field).
NFTOG[4:0]. How many lines after
l
COUNT
rollover to toggle F signal.
NFTOGSIGN
0
1
No delay
Additional delay by 1 line
0
0
0
1
1
NTSC default
0
Set to low when manual
programming
Not suitable for user
programming
No delay
Additional delay by 1 line
1
0
1
NFTOGDELE. Delay F transition by
one line relative to NFTOG (even
field).
NFTOGDELO. Delay F transition by
one line relative to NFTOG (odd
field).
PVBEG[4:0]. How many lines after
l
COUNT
rollover to set V high.
PVBEGSIGN
0
1
No delay
Additional delay by 1 line
0xE7
NTSC F Bit
Toggle
0
0
1
0
1
PAL default (BT.656)
0
Set to low when manual
programming
Not suitable for user
programming
No delay
Additional delay by 1 line
1
0
1
PVBEGDELE. Delay V bit going high
by one line relative to PVBEG (even
field).
PVBEGDELO. Delay V bit going high
by one line relative to PVBEG (odd
field).
PVEND[4:0]. How many lines after
l
COUNT
rollover to set V low.
PVENDSIGN
0
1
No delay
Additional delay by 1 line
0xE8
PAL V Bit
Begin
1
0
1
0
0
PAL default (BT.656)
0
Set to low when manual
programming
Not suitable for user
programming
No delay
Additional delay by 1 line
1
0
1
PVENDDELE. Delay V bit going low
by one line relative to PVEND (even
field).
PVENDDELO. Delay V bit going low
by one line relative to PVEND (odd
field).
PFTOG[4:0]. How many lines after
l
COUNT
rollover to toggle F signal.
PFTOGSIGN
0
1
No delay
Additional delay by 1 line
0xE9
PAL V Bit
End
0
0
0
1
1
PAL default (BT.656)
0
Set to low when manual
programming
Not suitable for user
programming
No delay
Additional delay by 1 line
1
0
1
PFTOGDELE. Delay F transition by
one line relative to PFTOG (even
field).
PFTOGDELO. Delay F transition by
one line relative to PFTOG (odd
field).
0
1
No delay
Additional delay by 1 line
0xEA
PAL F Bit
Toggle