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GS2961 Datasheet(PDF) 39 Page - Semtech Corporation |
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GS2961 Datasheet(HTML) 39 Page - Semtech Corporation |
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39 / 104 page  GS2961 3Gb/s, HD, SD SDI Receiver, with Integrated Adaptive Cable Equalizer Data Sheet 48004 - 2 November 2009 39 of 104 The extracted 8-bit data is presented on DOUT[17:10] such that DOUT[17:10] = HOUT ~ AOUT, where AOUT is the least significant bit of the decoded transport stream data. In addition, the DOUT19 and DOUT18 pins are configured as DVB-ASI status signals WORDERR and SYNCOUT respectively. SYNCOUT is HIGH whenever a K28.5 sync character is output from the device. WORDERR is HIGH whenever the device has detected a running disparity error or illegal code word. 4.9.4 Parallel Output in Data-Through Mode This mode is enabled when the SMPTE_BYPASS and DVB_ASI pins are LOW. In this mode, data is passed to the output bus without any decoding, descrambling or word-alignment. The output data width (10-bit or 20-bit) is controlled by the setting of the 20bit/10bit pin. 4.9.5 Parallel Output Clock (PCLK) The frequency of the PCLK output signal of the GS2961 is determined by the output data rate and the 20bit/10bit pin setting. Table 4-6 lists the output signal formats according to the data format selected in Manual mode (AUTO/MAN bit in the host interface is set LOW), or detected in Auto Mode (AUTO/MAN bit in the host interface is set HIGH). Table 4-6: GS2961 PCLK Output Rates Output Data Format Pin/Control Bit Settings PCLK Rate 20bit/ 10bit RATE_DET0 RATE_DET1 SMPTE_ BYPASS DVB-ASI 20-bit demultiplexed HD format HIGH LOW LOW HIGH LOW 74.25 or 74.25/1.001MHz 20-bit data output HD format HIGH LOW LOW LOW LOW 74.25 or 74.25/1.001MHz 20-bit demultiplexed SD format HIGHHIGHX HIGH LOW 13.5MHz 20-bit data output SD format HIGHHIGH X LOW LOW 13.5MHz 20-bit demultiplexed 3G format HIGHLOW HIGHHIGH LOW 148.5 or 148.5/1.001MHz 10-bit multiplexed 3G DDR format LOW LOW HIGHHIGH LOW 148.5 or 148.5/1.001MHz 10-bit multiplexed HD format LOW LOW LOW HIGH LOW 148.5 or 148.5/1.001MHz 10-bit data output HD format LOW LOW LOW LOW LOW 148.5 or 148.5/1.001MHz |
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