ADV7181BBCPZ datasheet(44/96 Pages) AD

44 / 96 page

ADV7181B

Rev. 0 | Page 44 of 96

ADVANCE BEGIN OF

VSYNC BY PVBEG[4:0]

DELAY BEGIN OF

VSYNC BY PVBEG[4:0]

VSYNC BEGIN

PVBEGSIGN

ODD FIELD?

YES

PVBEGDELO

VSBHO

ADDITIONAL

DELAY BY

1 LINE

ADVANCE BY

0.5 LINE

PVBEGDELE

VSBHE

ADDITIONAL

DELAY BY

1 LINE

ADVANCE BY

0.5 LINE

NOT VALID FOR USER

PROGRAMMING

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?

YES

PVENDDELO

VSEHO

ADDITIONAL

DELAY BY

1 LINE

ADVANCE BY

0.5 LINE

PVENDDELE

VSEHE

ADDITIONAL

DELAY BY

1 LINE

ADVANCE BY

0.5 LINE

NOT VALID FOR USER

PROGRAMMING

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.

ADV7181BBCPZ Datasheet(PDF) 44 Page - Analog Devices

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