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Multi-rate 3G SDI Reclocker

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Description

The GS2965 is a multi-rate serial digital reclocker designed to automatically recover the embedded clock from a digital video signal and retime the incoming video data.

It will recover the embedded clock signal and retime the data from a SMPTE 424M, SMPTE 292M, or SMPTE 259M-C compliant digital video signal.

A serial host interface provides the ability to configure and monitor multiple GS2965 devices in a daisy-chain configuration.

Adjustable input trace equalization (EQ) for up to 40" of FR4 trace losses, and adjustable output de-emphasis (DE) for up to 20" of FR4 trace losses, can be configured via the host interface. The GS2965 can operate in either auto or manual rate selection mode. In Auto mode, the device will automatically detect and lock onto incoming SMPTE SDI data signals at any supported rate. For single rate data systems, the GS2965 can be configured to operate in Manual mode. In both modes, the device requires only one external crystal to set the VCO frequency when not locked and provides adjustment free operation.

The GS2965 accepts industry-standard differential input levels including LVPECL and CML. The differential data and clock outputs feature selectable output swing via the host interface, ensuring compatibility with most industry-standard, terminated differential receivers.

The GS2965 features dual differential outputs. The second output can be configured to emit either the recovered clock signal or the re-timed video data. This output can also be disabled to save power.

In systems which require passing of non-SMPTE data rates, the GS2965 can be configured to either automatically or manually enter a bypass mode in order to pass the signal without reclocking.

The GS2965 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant. This component and all homogeneous sub-components are RoHS compliant

Features


  • SMPTE 424M, SMPTE 292M and SMPTE 259M-C compliant
  • Single supply operation at 3.3V or 2.5V
  • 180mW typical power consumption (213mW with RCO enabled) at 2.5V
  • Input signal equalization and output-signal de-emphasis settings to compensate for board-trace dielectric losses
  • Supports DVB-ASI at 270Mb/s
  • 2:1 input multiplexer patented technology
  • Choice of dual reclocked data outputs or one reclocked data output and one clock output
  • Uses standard 27MHz crystal
  • Differential inputs and outputs
    • Support DC coupling to industry-standard differential logic
    • On-chip 100? differential data input/output termination
    • Selectable 400mVppd or 800mVppd output swing on each output
    • Seamless interface to other Gennum products
  • 4 wire SPI host interface for device configuration and monitoring
  • Standard logic control and status signal levels
  • Auto and Manual modes for rate selection
  • Standards indication in Auto mode
  • Lock Detect Output
  • Mute, Bypass and Autobypass functions
  • SD/HD indication output to control GS2978 or GS2988 dual slew-rate cable drivers
  • Operating temperature range: -40°C to +85°C
  • 32 pin 5mm x 5mm QFN package
  • Pb-free and RoHS compliant

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