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GS9090A Datasheet(PDF) 55 Page - Gennum Corporation |
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GS9090A Datasheet(HTML) 55 Page - Gennum Corporation |
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55 / 69 page  GS9090A Preliminary Data Sheet Proprietary and Confidential 34714 - 0 February 2006 55 of 69 3.11.2 Parallel Output in SMPTE Mode When the device is operating in SMPTE mode (see SMPTE Functionality on page 24), SD data is presented to the output bus in multiplexed format. The data will be output on the DOUT[9:0] pins and word aligned according to TRS ID words. 3.11.3 Parallel Output in DVB-ASI Mode When operating in DVB-ASI mode (see DVB-ASI Functionality on page 27), the extracted 8-bit data words will be presented on DOUT[7:0] such that DOUT7 = HOUT is the most significant bit of the decoded transport stream data and DOUT0 = AOUT is the least significant bit. In addition, DOUT9 and DOUT8 will be configured as the DVB-ASI status signals WORDERR and SYNCOUT respectively. See Status Signal Outputs on page 28 for a description of these DVB-ASI specific output signals. 3.11.4 Parallel Output in Data-Through Mode When operating in Data-Through mode (see Data-Through functionality on page 28), the GS9090A presents data to the output data bus without performing any decoding, descrambling, or word-alignment. As described in Data-Through functionality on page 28, the data bus outputs will be forced to logic LOW if the device is set to operate in Auto mode but cannot identify SMPTE TRS ID or DVB-ASI sync words in the input data stream. 3.12 Programmable Multi-Function Outputs The GS9090A has a multi-function output port that uses 4 pins, STAT0 through STAT3. Each pin can be programmed via the host interface to output one of the following signals: H, V, F, FIFO_LD, ANC_DETECT, EDH_DETECT, FIFO_FULL, and FIFO_EMPTY. Table 3-17: Output Signals Available on Multi-Function Output Ports Output Status Signal Reference H HVF Timing Signal Generation on page 26 V HVF Timing Signal Generation on page 26 F HVF Timing Signal Generation on page 26 FIFO_LD FIFO Load Pulse on page 28 ANC_DETECT Ancillary Data Detection and Indication on page 29 EDH_DETECT EDH Packet Detection on page 31 FIFO_FULL Reading From the FIFO on page 47 FIFO_EMPTY Reading From the FIFO on page 47 |
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