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GS9092A Datasheet(PDF) 22 Page - Semtech Corporation |
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GS9092A Datasheet(HTML) 22 Page - Semtech Corporation |
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22 / 61 page  GS9092A GenLINX® III 270Mb/s Serializer for SDI and DVB-ASI Final Data Sheet 34715 - 5 February 2013 22 of 61 3. Detailed Description • Functional Overview • Parallel Data Inputs • Internal FIFO Operation • SMPTE Mode • DVB-ASI Mode • Data-Through Mode • Additional Processing Functions • Parallel-to-Serial Conversion • Serial Digital Data PLL • Serial Digital Output • Programmable Multi-function I/O • Low Latency Mode • GSPI Host Interface • JTAG Operation • Device Power Up 3.1 Functional Overview The GS9092A is a 270Mb/s serializer with an internal FIFO and a programmable multi-function I/O port. The device has 3 different modes of operation which must be set by the application layer through external device pins. When SMPTE mode is enabled, the device will accept 10-bit multiplexed SMPTE compliant data at 27MHz. The device's additional processing features are also enabled in this mode. In DVB-ASI mode, the GS9092A will accept an 8-bit parallel DVB-ASI compliant transport stream. The serial output data stream will be 8b/10b encoded and padded with K28.5 fill characters. The GS9092A's third mode allows for the serializing of data not conforming to SMPTE or DVB-ASI streams. The serial digital outputs feature a high impedance mode and adjustable signal swing. In the digital signal processing core, several data processing functions are implemented including SMPTE 352M and EDH data packet generation and insertion, and automatic video standards detection. These features are all enabled by default, but may be individually disabled via internal registers accessible through the GSPI host interface. |
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