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ADV7182ABCPZ Datasheet(PDF) 75 Page - Analog Devices |
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ADV7182ABCPZ Datasheet(HTML) 75 Page - Analog Devices |
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75 / 102 page  Data Sheet ADV7182A Rev. 0 | Page 75 of 102 Main Map Bits (Shading Indicates Default State) Comments Notes Subaddress Register Bit Description 7 6 5 4 3 2 1 0 0x13 Status 3 (read only) INST_HLOCK x 1 = horizontal lock achieved Unfiltered Reserved x Reserved SD_OP_50Hz 0 SD 60 Hz detected SD field rate detect 1 SD 50 Hz detected Reserved x FREE_RUN_ACT x 1 = freerun mode active STD FLD LEN x 1 = field length standard Correct field length found Interlaced x 1 = interlaced video detected Field sequence found PAL_SW_LOCK x 1 = swinging burst detected Reliable swinging burst sequence 0x14 Analog clamp control FREE_RUN_PAT_SEL[2:0] 0 0 0 Single color set by DEF_C and DEF_Y; see the Color Control Registers section 0 0 1 100% color bars 0 1 0 Luma ramp 1 0 1 Boundary box Reserved 0 Sets 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 Sets to default 0x15 Digital Clamp Control 1 Reserved x x x x Sets 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 or notch filters; if either autowide or autonarrow 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 |
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