ADV7181BBCPZ datasheet(27/96 Pages) AD

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ADV7181B

Rev. 0 | Page 27 of 96

AUTO SELECT LUMA

SHAPING FILTER TO

COMPLEMENT COMB

SET YSFM

YSFM IN AUTO MODE?

00000 OR 00001

VIDEO

QUALITY

BAD

GOOD

SELECT WIDEBAND

FILTER AS PER

WYSFM[4:0]

SELECT AUTOMATIC

WIDEBAND FILTER

WYSFMOVR

USE YSFM SELECTED

FILTER REGARDLESS FOR

GOOD AND BAD VIDEO

YES

Figure 10. YSFM and WYSFM Control Flowchart

Table 28. YSFM Function

YSFM[4:0]

Description

0'0000

Automatic selection including a wide notch

response (PAL/NTSC/SECAM)

0'0001

(default)

Automatic selection including a narrow notch

response (PAL/NTSC/SECAM)

0'0010

SVHS 1

0'0011

SVHS 2

0'0100

SVHS 3

0'0101

SVHS 4

0'0110

SVHS 5

0'0111

SVHS 6

0'1000

SVHS 7

0'1001

SVHS 8

0'1010

SVHS 9

0'1011

SVHS 10

0'1100

SVHS 11

0'1101

SVHS 12

0'1110

SVHS 13

0'1111

SVHS 14

1'0000

SVHS 15

1'0001

SVHS 16

1'0010

SVHS 17

1'0011

SVHS 18 (CCIR 601)

1'0100

PAL NN 1

1'0101

PAL NN 2

1'0110

PAL NN 3

1'0111

PAL WN 1

1'1000

PAL WN 2

1'1001

NTSC NN 1

1'1010

NTSC NN 2

1'1011

NTSC NN 3

1'1100

NTSC WN 1

1'1101

NTSC WN 2

1'1110

NTSC WN 3

1'1111

Reserved

WYSFM[4:0] Wide Band Y Shaping Filter Mode,

Address 0x18 [4:0]

The WYSFM[4:0] bits allow the user to manually select a

shaping filter for good quality video signals, for example, CVBS

with stable time base, luma component of YPrPb, luma

component of YC. The WYSFM bits are only active if the

WYSFMOVR bit is set to 1. See the general discussion of the

shaping filter settings in the Y Shaping Filter section.

Table 29. WYSFM Function

WYSFM[4:0]

Description

0'0000

Do not use

0'0001

Do not use

0'0010

SVHS 1

0'0011

SVHS 2

0'0100

SVHS 3

0'0101

SVHS 4

0'0110

SVHS 5

0'0111

SVHS 6

0'1000

SVHS 7

0'1001

SVHS 8

0'1010

SVHS 9

0'1011

SVHS 10

0'1100

SVHS 11

0'1101

SVHS 12

0'1110

SVHS 13

0'1111

SVHS 14

1'0000

SVHS 15

1'0001

SVHS 16

1'0010

SVHS 17

1'0011 (default)

SVHS 18 (CCIR 601)

1'0100–1’1111

Do not use

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