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GS9090B Datasheet(PDF) 1 Page - Semtech Corporation |
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GS9090B Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 72 page  1 of 72 GS9090B GenLINX® III 270Mb/s Deserializer for SDI www.gennum.com Data Sheet 40749 - 5 May 2010 GS9090B GenLINX® III 270Mb/s Deserializer for SDI Key Features • SMPTE 259M-C compliant descrambling and NRZI to NRZ decoding (with bypass) • DVB-ASI 8b/10b decoding • Integrated line-based FIFO for data alignment/delay, clock phase interchange, DVB-ASI data packet extraction and clock rate interchange, and ancillary data packet extraction • Integrated VCO and reclocker • User selectable additional processing features including: TRS, ANC data checksum, and EDH CRC error detection and correction programmable ANC data detection illegal code remapping • Internal flywheel for noise immune H, V, F extraction • Automatic standards detection and indication • Enhanced Gennum Serial Peripheral Interface (GSPI) • JTAG test interface • Polarity insensitive for DVB-ASI and SMPTE signals • +1.8V core power supply with optional +1.8V or +3.3V I/O power supply • Small footprint (8mm x 8mm) • Low power operation (typically 145mW) • Pb-free Applications • SMPTE 259M-C Serial Digital Interfaces • DVB-ASI Serial Digital Interfaces Description The GS9090B is a 270Mb/s reclocking deserializer with an internal FIFO. It provides a complete receive solution for SD-SDI and DVB-ASI applications. In addition to reclocking and deserializing the input data stream, the GS9090B performs NRZI-to-NRZ decoding, de- scrambling as per SMPTE 259M-C, and word alignment when operating in SMPTE mode. When operating in DVB-ASI mode, the device will word align the data to K28.5 sync characters and 8b/10b decode the received stream. The internal reclocker features a very wide input jitter tol- erance, and is fully compatible with both SMPTE and DVB-ASI input streams. The GS9090B includes a range of data processing functions such as EDH support (error detection and han- dling), and automatic standards detection. The device can also detect and extract SMPTE 352M payload identifier packets and independently identify the received video standard. This information is read from in- ternal registers via the host interface port. The GS9090B also incorporates a video line-based FIFO. This FIFO may be used in four user-selectable modes to car- ry out tasks such as data alignment / delay, clock phase in- terchange, MPEG packet extraction and clock rate interchange, and ancillary data packet extraction. Parallel data outputs are provided in 10-bit multiplexed format, with the associated parallel clock output signal op- erating at 27MHz. The device may also be used in a low-latency data pass through mode where only descrambling and word align- ment will be performed in SMPTE mode. |
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