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ADV7181B
NVENDDELE NTSC VSync End Delay on Even Field,
Address 0xE6 [6]
Rev. 0 | Page 42 of 96
When NVENDDELE is set to 0 (default), there is no delay.
Setting NVENDDELE to 1 delays VSync from going low on an
even field by a line relative to NVEND.
NVENDSIGN NTSC VSync End Sign, Address 0xE6 [5]
Setting NVENDSIGN to 0 (default) delays the end of VSync. Set
for user manual programming.
Setting NVENDSIGN to 1 advances the end of VSync. Not
recommended for user programming.
NVEND NTSC[4:0] VSync End, Address 0xE6 [4:0]
The default value of NVEND is 00100, indicating the NTSC
VSync end position.
For all NTSC/PAL VSync timing controls, both the V bit in the
AV code and the VSync on the VS pin are modified.
NFTOGDELO NTSC Field Toggle Delay on Odd Field,
Address 0xE7 [7]
When NFTOGDELO is 0 (default), there is no delay.
Setting NFTOGDELO to 1 delays the field toggle/transition on
an odd field by a line relative to NFTOG.
NFTOGDELE NTSC Field Toggle Delay on Even Field,
Address 0xE7 [6]
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.
0
ADVANCE TOGGLE OF
FIELD BY NFTOG[4:0]
DELAY TOGGLE OF
FIELD BY NFTOG[4:0]
NFTOGSIGN
ODD FIELD
0
1
NO
YES
NFTOGDELE
ADDITIONAL
DELAY BY
1 LINE
1
0
NFTOGDELO
ADDITIONAL
DELAY BY
1 LINE
1
0
FIELD
TOGGLE
NOT VALID FOR USER
PROGRAMMING
Figure 24. NTSC FIELD Toggle
NFTOGSIGN NTSC Field Toggle Sign, Address 0xE7 [5]
Setting NFTOGSIGN to 0 delays the field transition. Set for
user manual programming.
Setting NFTOGSIGN to 1 (default) advances the field
transition. Not recommended for user programming.
NFTOG[4:0] NTSC Field Toggle, Address 0xE7 [4:0]
The default value of NFTOG is 00011, indicating the NTSC
Field toggle position.
For all NTSC/PAL Field timing controls, both the F bit in the
AV code and the Field signal on the FIELD/DE pin are modified.
Table 55. Recommended User Settings for PAL
(see Figure 26)
Register
Register Name
0x31
VSync Field Control 1
0x32
VSync Field Control 2
0x33
VSync Field Control 3
0x37
Polarity
0xE8
PAL_V_Bit_Beg
0xE9
PAL_V_Bit_End
0xEA
PAL_F_Bit_Tog
Write
0x12
0x81
0x84
0x29
0x1
0x4
0x6