Data Sheet
ADV7180
Table 35. YSFM Function
Table 36. WYSFM Function
WYSFM[4:0]
00000
YSFM[4:0]
Description
Description
Do not use
Do not use
SVHS 1
SVHS 2
SVHS 3
SVHS 4
SVHS 5
SVHS 6
SVHS 7
00000
Automatic selection including a wide notch
response (PAL/NTSC/SECAM)
00001
00001 (default) Automatic selection including a narrow notch
response (PAL/NTSC/SECAM)
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
SVHS 1
SVHS 2
SVHS 3
SVHS 4
SVHS 5
SVHS 6
SVHS 7
SVHS 8
SVHS 8
SVHS 9
SVHS 10
SVHS 11
SVHS 12
SVHS 13
SVHS 14
SVHS 15
SVHS 16
SVHS 17
SVHS 18 (CCIR 601)
Do not use
SVHS 9
SVHS 10
SVHS 11
SVHS 12
SVHS 13
SVHS 14
SVHS 15
SVHS 16
SVHS 17
SVHS 18 (CCIR 601)
PAL NN1
PAL NN2
PAL NN3
PAL WN1
PAL WN2
NTSC NN1
NTSC NN2
NTSC NN3
NTSC WN1
NTSC WN2
NTSC WN3
Reserved
10010
10011 (default)
10100 to 11111
The filter plots in Figure 22 show the SVHS 1 (narrowest) to
SVHS 18 (widest) shaping filter settings. Figure 24 shows the
PAL notch filter responses. The NTSC-compatible notches are
shown in Figure 25.
COMBINED Y ANTIALIAS, SVHS LOW-PASS FILTERS,
Y RESAMPLE
0
–10
–20
–30
–40
–50
–60
–70
WYSFM[4:0], Wideband 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, and luma component
of Y/C. The WYSFM bits are active only if the WYSFMOVR bit
is set to 1. See the general discussion of the shaping filter settings in
the Y Shaping Filter section.
0
2
4
6
8
10
12
FREQUENCY (MHz)
Figure 22. Y SVHS Combined Responses
Rev. G | Page 33 of 120
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