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GS9090B Datasheet(PDF) 1 Page - Semtech Corporation

Part No. GS9090B
Description  270Mb/s Deserializer for SDI
Download  72 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

GS9090B Datasheet(HTML) 1 Page - Semtech Corporation

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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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