ADV7183ABST datasheet(30/104 Pages) AD

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ADV7183A

Rev. A | Page 30 of 104

Table 60. YSFM Function

YSFM[4:0]

Description

0'0000

Automatic selection including a wide notch

response (PAL/NTSC/SECAM)

0'0001*

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

*Default value.

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

Address 0x18, [4:0]

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

shaping filter for good quality video signals (e.g., 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 61. 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*

SVHS 18 (CCIR 601)

1'0100–1’1111

Do not use

*Default value.

–10

–20

–30

–40

–50

–60

–70

010

212

FREQUENCY (MHz)

v740a COMBINED Y ANTIALIAS, S-VHS LOW-PASS FILTERS,

Y RESAMPLE

Figure 12. SDP Y S-VHS Combined Responses

The filter plots in Figure 12 show the S-VHS 1 (narrowest) to

S-VHS 18 (widest) shaping filter settings. Figure 14 shows the

PAL notch filter responses. The NTSC compatible notches are

shown in Figure 15.

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