ADV7181B
Rev. B | Page 45 of 100
ADVANCE BEGIN OF
VSYNC BY PVBEG[4:0]
DELAY BEGIN OF
VSYNC BY PVBEG[4:0]
VSYNC BEGIN
PVBEGSIGN
ODD FIELD?
0
1
NO
YES
PVBEGDELO
VSBHO
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
1
0
1
0
PVBEGDELE
VSBHE
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
1
0
1
0
NOT VALID FOR USER
PROGRAMMING
04984-027
Figure 27. PAL Vsync Begin
PVBEGDELO PAL Vsync Begin Delay on Odd Field,
Address 0xE8[7]
When PVBEGDELO is 0 (default), there is no delay.
Setting PVBEGDELO to 1 delays Vsync going high on an odd
field by a line relative to PVBEG.
PVBEGDELE PAL Vsync Begin Delay on Even Field,
Address 0xE8[6]
When PVBEGDELE is 0, there is no delay.
Setting PVBEGDELE to 1 (default) delays Vsync going high on
an even field by a line relative to PVBEG.
PVBEGSIGN PAL Vsync Begin Sign, Address 0xE8[5]
Setting PVBEGSIGN to 0 delays the beginning of Vsync. Set for
user manual programming.
Setting PVBEGSIGN to 1(default) advances the beginning of
Vsync. Not recommended for user programming.
PVBEG[4:0] PAL Vsync Begin, Address 0xE8[4:0]
The default value of PVBEG is 00101, indicating the PAL Vsync
begin 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.
ADVANCE END OF
VSYNC BY PVEND[4:0]
DELAY END OF VSYNC
BY PVEND[4:0]
VSYNC END
PVENDSIGN
ODD FIELD?
0
1
NO
YES
PVENDDELO
VSEHO
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
1
0
1
0
PVENDDELE
VSEHE
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
1
0
1
0
NOT VALID FOR USER
PROGRAMMING
04984-028
Figure 28. PAL Vsync End
PVENDDELO PAL Vsync End Delay on Odd Field,
Address 0xE9[7]
When PVENDDELO is 0 (default), there is no delay.
Setting PVENDDELO to 1 delays Vsync going low on an odd
field by a line relative to PVEND.
PVENDDELE PAL Vsync End Delay on Even Field,
Address 0xE9[6]
When PVENDDELE is 0 (default), there is no delay.
Setting PVENDDELE to 1 delays Vsync going low on an even
field by a line relative to PVEND.
PVENDSIGN PAL Vsync End Sign, Address 0xE9[5]
Setting PVENDSIGN to 0 (default) delays the end of Vsync.
Set for user manual programming.
Setting PVENDSIGN to 1 advances the end of Vsync. Not
recommended for user programming.
