DESCRIPTION
When interfaced to the Gennum GS1545 HDTV Equalizing Receiver or GS1540 Non-Equalizing Receiver, the GS1500 performs the final conversion to word aligned data. The device performs NRZI decoding and de-scrambling as per SMPTE 292M and word-aligns to the incoming data stream. Line based CRCs are calculated on the incoming data stream and are compared against the CRCs embedded within the data stream.

FEATURES
• SMPTE 292M compliant
• standards detection/indication for SMPTE 292M levels A/B,C,D/E,F,G/H,I,J/K,L/M
• NRZI decoding and SMPTE descrambling with BYPASS option
• line CRC calculation, comparison
• selectable line based CRC re-insertion
• H, V, F timing reference signal (TRS) extraction
• selectable flywheel for noise immune H, V, F extraction
• selectable automatic switch line handling
• selectable TRS and line number re-insertion
• selectable active picture illegal code re-mapping
• ANC data position indication
• ANC data extraction via internal FIFOs (1024 bytes on Y and C channels)
• configurable FIFO LOAD pulse
• 20 bit 3.3V CMOS input data bus
• optimized input interface to GS1545 or GS1540
• single +3.3V power supply
• 5V tolerant I/O

APPLICATIONS
    SMPTE 292M Serial Digital Interfaces.