'Dual-Rate' related articles 1

  1. 2009/01/09 GS1560A - Dual-Rate Deserializer
Description
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 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 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 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.

Key Features
*SMPTE 292M and SMPTE 259M-C compliant descrambling and NRZI → 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:
*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
*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
*SMPTE 292M Serial Digital Interfaces
*SMPTE 259M-C Serial Digital Interfaces
*DVB-ASI Serial Digital Interfaces

GS1561, GS1560ACF, GS1560ACFE3, GS1561-CF, GS1561-CFE3
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