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ADV7180WBSTZ Datasheet(PDF) 87 Page - Analog Devices |
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ADV7180WBSTZ Datasheet(HTML) 87 Page - Analog Devices |
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87 / 120 page  Data Sheet ADV7180 Rev. G | Page 87 of 120 Subaddress Register Bit Description Bits (Shading Indicates Default State) Comments Notes 7 6 5 4 3 2 1 0 0x14 Analog clamp control Reserved 0 0 1 0 Set to default CCLEN; current clamp enable allows the user to switch off the current sources in the analog front 0 Current sources switched off 1 Current sources enabled Reserved 0 0 0 Set to default 0x15 Digital Clamp Control 1 Reserved x x x x Set to default DCFE; digital clamp freeze enable 0 Digital clamp on 1 Digital clamp off DCT[1:0]; digital clamp timing determines the time constant of the digital fine clamp circuitry 0 0 Slow (TC = 1 sec) 0 1 Medium (TC = 0.5 sec) 1 0 Fast (TC = 0.1 sec) 1 1 TC dependent on video Reserved 0 Set to default 0x17 Shaping Filter Control 1 YSFM[4:0]; selects Y shaping filter mode in CVBS-only mode; allows the user to select a wide range of low-pass and notch filters; if either auto mode is selected, the decoder selects the optimum Y filter depending on the CVBS video source quality (good vs. poor) 0 0 0 0 0 Autowide notch for poor quality sources or wideband filter with comb for good quality input Decoder selects optimum Y shaping filter depending on CVBS quality 0 0 0 0 1 Autonarrow notch for poor quality sources or wideband filter with comb for good quality input 0 0 0 1 0 SVHS 1 If one of these modes is selected, the decoder does not change filter modes; depending on video quality, a fixed filter response (the one selected) is used for good and bad quality video 0 0 0 1 1 SVHS 2 0 0 1 0 0 SVHS 3 0 0 1 0 1 SVHS 4 0 0 1 1 0 SVHS 5 0 0 1 1 1 SVHS 6 0 1 0 0 0 SVHS 7 0 1 0 0 1 SVHS 8 0 1 0 1 0 SVHS 9 0 1 0 1 1 SVHS 10 0 1 1 0 0 SVHS 11 0 1 1 0 1 SVHS 12 0 1 1 1 0 SVHS 13 0 1 1 1 1 SVHS 14 1 0 0 0 0 SVHS 15 1 0 0 0 1 SVHS 16 1 0 0 1 0 SVHS 17 1 0 0 1 1 SVHS 18 (CCIR 601) 1 0 1 0 0 PAL NN1 1 0 1 0 1 PAL NN2 1 0 1 1 0 PAL NN3 1 0 1 1 1 PAL WN1 1 1 0 0 0 PAL WN2 1 1 0 0 1 NTSC NN1 1 1 0 1 0 NTSC NN2 1 1 0 1 1 NTSC NN3 1 1 1 0 0 NTSC WN1 1 1 1 0 1 NTSC WN2 1 1 1 1 0 NTSC WN3 1 1 1 1 1 Reserved CSFM[2:0]; C shaping filter mode allows selection from a range of low-pass chrominance filters; if either auto mode is selected, the decoder selects the optimum C filter depending on the CVBS video source quality (good vs. bad); nonauto settings force a C filter for all standards and quality of CVBS video 0 0 0 Autoselection 1.5 MHz Automatically selects a C filter based on video standard and quality 0 0 1 Autoselection 2.17 MHz 0 1 0 SH1 Selects a C filter for all video standards and for good and bad video 0 1 1 SH2 1 0 0 SH3 1 0 1 SH4 1 1 0 SH5 1 1 1 Wideband mode |
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