ADV7181BST View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADV7181BST

Multiformat SDTV Video Decoder

Analog Devices 

ADV7181

1

NVBEGSIGN

0

ADVANCE BEGIN OF

VSYNC BY NVBEG[4:0]

DELAY BEGIN OF

VSYNC BY NVBEG[4:0]

NOT VALID FOR USER

PROGRAMMING

ODD FIELD?

YES

NO

NVBEGDELO

1

0

ADDITIONAL

DELAY BY

1 LINE

NVBEGDELE

0

1

ADDITIONAL

DELAY BY

1 LINE

VSBHO

1

0

ADVANCE BY

0.5 LINE

VSBHE

0

1

ADVANCE BY

0.5 LINE

VSYNC BEGIN

Figure 22. NTSC VSync Begin

NVBEGDELO NTSC VSync Begin Delay on Odd Field,

Address 0xE5, [7]

Table 110. NVBEGDELO Function

NVBEGDELO Description

0*

No Delay.

1

Delay VSync going high on an odd field by a line

relative to NVBEG.

*Default value.

NVBEGDELE NTSC Vsync Begin Delay on Even Field,

Address 0xE5, [6]

Table 111. NVBEGDELE Function

NVBEGDELE Description

0*

No Delay.

1

Delay VSync going high on an even field by a

line relative to NVBEG.

*Default value.

NVBEGSIGN NTSC VSync Begin Sign, Address 0xE5, [5]

Table 112. NVBEGSIGN Function

NVBEGSIGN Description

0

Delay start of VSync. Set for user manual

programming.

1*

Advance start of VSync. Not recommended for

user programming.

*Default value.

NVBEG[4:0] NTSC VSync Begin, Address 0xE5, [4:0]

Table 113. NVBEG Function

NVBEG

Description

00101*

NTSC VSync begin position.

*Default value.

Note: For all NTSC/PAL VSync timing controls, both the V bit

in the AV code and the VSync on the VS pin are modified.

1

NVENDSIGN

0

ADVANCE END OF

VSYNC BY NVEND[4:0]

DELAY END OF VSYNC

BY NVEND[4:0]

NOT VALID FOR USER

PROGRAMMING

ODD FIELD?

YES

NO

NVENDDELO

1

0

ADDITIONAL

DELAY BY

1 LINE

NVENDDELE

0

1

ADDITIONAL

DELAY BY

1 LINE

VSEHO

1

0

ADVANCE BY

0.5 LINE

VSEHE

0

1

ADVANCE BY

0.5 LINE

VSYNC END

Figure 23. NTSC VSync End

Rev. A | Page 46 of 104

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