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ADV7180WBSTZ Datasheet(PDF) 33 Page - Analog Devices |
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ADV7180WBSTZ Datasheet(HTML) 33 Page - Analog Devices |
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33 / 120 page  Data Sheet ADV7180 Rev. G | Page 33 of 120 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. 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. 0 –10 –20 –30 –40 –50 –60 –70 0 10 8 6 4 2 12 FREQUENCY (MHz) COMBINED Y ANTIALIAS, SVHS LOW-PASS FILTERS, Y RESAMPLE Figure 22. Y SVHS Combined Responses |
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