ADV7182 View Datasheet(PDF) - Analog Devices

Part Name

Description

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ADV7182

10-Bit, SDTV Video Decoder with Differential Inputs

Analog Devices 

ADV7182

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

Data Sheet

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

VSBHO

1

0

ADVANCE BY

0.5 LINE

VSBHE

0

1

ADVANCE BY

0.5 LINE

VSEHO

1

0

ADVANCE BY

0.5 LINE

VSEHE

0

1

ADVANCE BY

0.5 LINE

VSYNC BEGIN

Figure 34. NTSC VSYNC Begin

NVBEGDELO, NTSC VSYNC Begin Delay on Odd Field,

Address 0xE5[7]

When NVBEGDELO is 0 (default), there is no delay.

Setting NVBEGDELO to 1 delays VSYNC going high by one

line relative to NVBEG (odd field).

NVBEGDELE, NTSC VSYNC Begin Delay on Even Field,

Address 0xE5[6]

When NVBEGDELE is 0 (default), there is no delay.

Setting NVBEGDELE to 1 delays VSYNC going high by one

line relative to NVBEG (even field).

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

Setting NVBEGSIGN to 0 delays the start of VSYNC; sets to low

when manual programming.

Setting NVBEGSIGN to 1 (default) advances the start of

VSYNC; however, it is not suitable for user programming.

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

The default value of NVBEG is 00101, indicating the NTSC

VSYNC begin position. For all NTSC/PAL VSYNC timing

controls, both the V bit in the AV code and the VSYNC signal

are modified.

VSYNC END

Figure 35. NTSC VSYNC End

NVENDDELO, NTSC VSYNC End Delay on Odd Field,

Address 0xE6[7]

When NVENDDELO is 0 (default), there is no delay.

Setting NVENDDELO to 1 delays VSYNC going low by one

line relative to NVEND (odd field).

NVENDDELE, NTSC VSYNC End Delay on Even Field,

Address 0xE6[6]

When NVENDDELE is 0 (default), there is no delay.

Setting NVENDDELE to 1 delays VSYNC going low by a line

relative to NVEND (even field).

NVENDSIGN, NTSC VSYNC End Sign, Address 0xE6[5]

Setting NVENDSIGN to 0 (default) delays the end of VSYNC;

sets to low when manual programming.

Setting NVENDSIGN to 1 advances the end of VSYNC;

however, it is not suitable for user programming.

NVEND[4:0], NTSC 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 signal are modified.

Rev. A | Page 44 of 96

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