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GS2970A Datasheet(PDF) 38 Page - Semtech Corporation |
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GS2970A Datasheet(HTML) 38 Page - Semtech Corporation |
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38 / 150 page  GS2970A 3Gb/s, HD, SD SDI Receiver Data Sheet 54244 - 2 September 2012 38 of 150 Figure 4-6:PCLK to Data and Control Signal Output Timing - DDR Mode The GS2970A has a 20-bit output parallel bus, which can be configured for different output formats as shown in Table 4-5. I/O Timing Specs: 3.367ns DBUS[19:10] PCLK_OUT Y0 Y1 Cr0 Cb1 Y2 6.734ns 20% 80% tr 20% 80% tf Cr1 Y3 DDR Mode: toh tod toh tod toh tr/tf (min) Cload tod tr/tf (max) Cload toh tr/tf (min) Cload tod tr/tf (max) Cload dbus 0.450ns 0.400ns 1.900ns 1.500ns 0.400ns 0.300ns 1.800ns 1.100ns stat 0.450ns 0.500ns 2.200ns 1.600ns 0.450ns 0.400ns 2.500ns 1.500ns 10b3G Mode 3.3V 1.8V 6 pF 15 pF 6 pF 15 pF Table 4-5:GS2970A Output Video Data Format Selections Output Data Format Pin/Register Bit Settings DOUT[9:0] DOUT[19:10] 20BIT /10BIT RATE_ SEL0 RATE_ SEL1 SMPTE_ BYPASS DVB-ASI 20-bit demultiplexed HD format HIGHLOW LOW HIGHLOW Chroma Luma 20-bit data output HD format HIGH LOW LOW LOW LOW DATA DATA 20-bit demultiplexed SD format HIGHHIGHX HIGHLOW Chroma Luma 20-bit data output SD format HIGHHIGH X LOW LOW DATA DATA 10-bit multiplexed 3G DDR format LOW LOW HIGHHIGH LOW Driven LOW Data Stream One/ Data Stream Two* 10-bit multiplexed HD format LOW LOW LOW HIGH LOW Driven LOW Luma/Chroma 10-bit data output HD format LOW LOW LOW LOW LOW Driven LOW DATA |
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