GS1560A/GS1561 HD-LINX® II
Dual-Rate Deserializer
GS1560A/GS1561 Data Sheet
Key Features
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SMPTE 292M and SMPTE 259M-C compliant
descrambling and NRZI
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NRZ decoding (with
bypass)
DVB-ASI sync word detection and 8b/10b decoding
auto-configuration for HD-SDI, SD-SDI and
DVB-ASI
serial loop-through cable driver output selectable as
reclocked or non-reclocked (GS1560A only)
dual serial digital input buffers with 2 x 1 mux
integrated serial digital signal termination
integrated reclocker
automatic or manual rate selection / indication
(HD/SD)
descrambler bypass option
user selectable additional processing features
including:
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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
Description
The GS1560A/GS1561 is a reclocking deserializer.
When used in conjunction with the GS1524 Automatic
Cable Equalizer and the 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.
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internal flywheel for noise immune H, V, F
extraction
FIFO load Pulse
20-bit / 10-bit CMOS parallel output data bus
148.5MHz / 74.25MHz / 27MHz / 13.5MHz parallel
digital output
automatic standards detection and indication
Pb-free and RoHS Compliant
1.8V core power supply and 3.3V charge pump
power supply
3.3V digital I/O supply
JTAG test interface
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
27360 - 8
September 2005
1 of 80
www.gennum.com
GENNUM [ GENNUM CORPORATION ]
