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ADV7180BCPZ View Datasheet(PDF) - Analog Devices

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ADV7180BCPZ Datasheet PDF : 120 Pages
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Data Sheet
Table 35. YSFM Function
YSFM[4:0]
Description
00000
Automatic selection including a wide notch
response (PAL/NTSC/SECAM)
00001 (default) Automatic selection including a narrow notch
response (PAL/NTSC/SECAM)
00010
SVHS 1
00011
SVHS 2
00100
SVHS 3
00101
SVHS 4
00110
SVHS 5
00111
SVHS 6
01000
SVHS 7
01001
SVHS 8
01010
SVHS 9
01011
SVHS 10
01100
SVHS 11
01101
SVHS 12
01110
SVHS 13
01111
SVHS 14
10000
SVHS 15
10001
SVHS 16
10010
SVHS 17
10011
SVHS 18 (CCIR 601)
10100
PAL NN1
10101
PAL NN2
10110
PAL NN3
10111
PAL WN1
11000
PAL WN2
11001
NTSC NN1
11010
NTSC NN2
11011
NTSC NN3
11100
NTSC WN1
11101
NTSC WN2
11110
NTSC WN3
11111
Reserved
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.
ADV7180
Table 36. WYSFM Function
WYSFM[4:0]
Description
00000
Do not use
00001
Do not use
00010
SVHS 1
00011
SVHS 2
00100
SVHS 3
00101
SVHS 4
00110
SVHS 5
00111
SVHS 6
01000
SVHS 7
01001
SVHS 8
01010
SVHS 9
01011
SVHS 10
01100
SVHS 11
01101
SVHS 12
01110
SVHS 13
01111
SVHS 14
10000
SVHS 15
10001
SVHS 16
10010
SVHS 17
10011 (default)
SVHS 18 (CCIR 601)
10100 to 11111
Do not use
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
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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