GS1560A/GS1561 HD-LINX® II Dual-Rate Deserializer
Key Features
Description
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SMPTE 292M and SMPTE 259M-C compliant
descrambling and NRZI →NRZ decoding (with bypass)
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DVB-ASI 8b/10b decoding
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auto-configuration for HD-SDI and SD-SDI
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serial loop-through cable driver output selectable as
reclocked or non-reclocked (GS1560A only)
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dual serial digital input buffers with 2 x 1 mux
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integrated serial digital signal termination
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integrated reclocker
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automatic or manual rate selection / indication
(HD/SD)
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descrambler bypass option
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user selectable additional processing features
including:
The GS1560A/GS1561 is a reclocking deserializer. When
used in conjunction with the GS1524 Automatic Cable
Equalizer and the GO1555/GO1525* Voltage Controlled
Oscillator, a receive solution can be realized for HD-SD,
SD-SDI and DVB-ASI applications.
In addition to reclocking and deserializing the input data
stream, the GS1560A/GS1561 performs NRZI-to-NRZ
decoding, descrambling as per SMPTE 259M-C/292M, 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.
Two serial digital input buffers are provided with a 2x1
multiplexer to allow the device to select from one of two
serial digital input signals.
The integrated reclocker features a very wide Input Jitter
Tolerance of ±0.3 UI (total 0.6 UI), a rapid asynchronous
lock time, and full compliance with DVB-ASI data streams.
The GS1560A includes an integrated cable driver is for
serial input loop-through applications. It can be selected to
output either buffered or reclocked data. The cable driver
also features an output mute on loss of signal, high
impedance mode, adjustable signal swing, and automatic
dual slew-rate selection depending on HD/SD operational
requirements.
The GS1560A/GS1561 also includes a range of data
processing functions such as error detection and
correction, automatic standards detection, and EDH
support. The device can also detect and extract SMPTE
352M payload identifier packets and independently
identify the received video standard. This information is
read from internal registers via the host interface port.
Line-based CRC errors, line number errors, TRS errors, EDH
CRC errors and ancillary data checksum errors can all be
detected.
Finally, the device can correct detected errors and insert
new TRS ID words, line-based CRC words, ancillary data
checksum words, EDH CRC words, and line numbers.
Illegal code re-mapping is also available. All processing
functions may be individually enabled or disabled via host
interface control.
The GS1560A/GS1561 is Pb-free and the encapsulation
compound does not contain halogenated flame retardant.
This component and all homogeneous subcomponents are
RoHS compliant.
*For new designs use GO1555
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CRC, TRS, ANC data checksum, line number and EDH
CRC error detection and correction
programmable ANC data detection
illegal code remapping
internal flywheel for noise immune H, V, F extraction
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FIFO load Pulse
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20-bit / 10-bit CMOS parallel output data bus
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148.5MHz / 74.25MHz / 27MHz / 13.5MHz parallel
digital output
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automatic standards detection and indication
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Pb-free and RoHS Compliant
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1.8V core power supply and 3.3V charge pump power
supply
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3.3V digital I/O supply
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JTAG test interface
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small footprint compatible with GS9060, GS1532, and
GS9062
Applications
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SMPTE 292M Serial Digital Interfaces
SMPTE 259M-C Serial Digital Interfaces
DVB-ASI Serial Digital Interfaces
GS1560A/GS1561 HD-LINX® II Dual-Rate Deserializer
Data Sheet
27360 - 11
July 2008
www.gennum.com
1 of 80
Proprietary & Confidential
