ADV7181 AD [Analog Devices], ADV7181 Datasheet - Page 42

• Manufacturer Part Number: ADV7181
• Description: Multiformat SDTV Video Decoder
• Manufacturer: AD [Analog Devices]

ADV7181B
NVENDDELE NTSC VSync End Delay on Even Field,
Address 0xE6 [6]
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.
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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
0x31
0x32
0x33
0x37
0xE8
0xE9
0xEA
NOT VALID FOR USER
PROGRAMMING
ADVANCE TOGGLE OF
FIELD BY NFTOG[4:0]
NFTOGDELO
ADDITIONAL
DELAY BY
1 LINE
YES
Figure 24. NTSC FIELD Toggle
1
Register Name
VSync Field Control 1
VSync Field Control 2
VSync Field Control 3
Polarity
PAL_V_Bit_Beg
PAL_V_Bit_End
PAL_F_Bit_Tog
1
0
NFTOGSIGN
ODD FIELD?
TOGGLE
FIELD
0
FIELD BY NFTOG[4:0]
DELAY TOGGLE OF
NFTOGDELE
ADDITIONAL
DELAY BY
0
1 LINE
NO
1
Write
0x12
0x81
0x84
0x29
0x1
0x4
0x6