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GS2970A Datasheet(PDF) 59 Page - Semtech Corporation |
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GS2970A Datasheet(HTML) 59 Page - Semtech Corporation |
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59 / 150 page  GS2970A 3Gb/s, HD, SD SDI Receiver Data Sheet 54244 - 2 September 2012 59 of 150 VIDEO_FORMAT_352_A_X and VIDEO_FORMAT_352_B_X registers, and are updated once per frame at the end of line 12. The raster structure registers also contain three status bits: STD_LOCK, INT/PROG and M. The STD_LOCK bit is set HIGH whenever the timing signal generator is fully synchronized to the incoming standard, and detects it as one of the supported formats. The INT/PROG bit is set HIGH if the detected video standard is interlaced and LOW if the detected video standard is progressive. M is set HIGH if the clock frequency includes the “1000/1001” factor denoting a 23.98, 29.97 or 59.94Hz frame rate. The video standard code is reported in the VD_STD bits of the host interface register. Table 4-11 describes the 5-bit codes for the recognized video standards. Table 4-11:Supported Video Standard Codes SMPTE Standard Active Video Area RATE_ DET[1] HD/3G RATE_ DET[0] SD/HD Lines per Frame Active Lines per Frame Words per Active Line Words per Line VD_STD [5:0] 425M (3G Level A) 4:2:2 1920x1080/60 (1:1) 1 0 1125 1080 1920 2200 2Bh 1920x1080/50 (1:1) 1 0 1125 1080 1920 2640 2Dh 425M (3G Level B DS1 and DS2) 4:2:2 1920x1080/60 (2:1) 1 0 1125 540 1920 2200 0Ah 1920x1080/50 (2:1) 1 0 1125 540 1920 2640 0Ch 425M (3G) 4:4:4 1920x1080/60 (2:1) or 1920x1080/30 (PsF) 1 0 1125 1080 3840 4400 2Ah 1920x1080/50 (2:1) or 1920x1080/25 (PsF) 1 0 1125 1080 3840 5280 2Ch 1280x720/60 (1:1) 1 0 750 720 2560 3300 20h 1280x720/50 (1:1) 1 0 750 720 25603960 24h 1920x1080/30 (1:1) 1 0 1125 1080 3840 4400 2Bh 1920x1080/25 (1:1) 1 0 1125 1080 3840 5280 2Dh 1280x720/25 (1:1) 1 0 750 720 2560 7920 26h 1920x1080/24 (1:1) 1 0 1125 1080 3840 5500 30h 1280x720/24 (1:1) 1 0 750 720 2560 8250 28h 260M (HD) 1920x1035/60 (2:1) 0 0 1125 1035 1920 2200 15h 295M (HD) 1920x1080/50 (2:1) 0 0 1250 1080 1920 2376 14h |
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