GS2975A GENNUM [Gennum Corporation], GS2975A Datasheet

GS2975A

Manufacturer Part Number

GS2975A

Description

Manufacturer

GENNUM [Gennum Corporation]

Datasheet

1.GS2975A.pdf (27 pages)

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GS2975A HD-LINX® III Multi-Rate SDI Automatic Reclocker with Dual

Differential Outputs

Features

•

Applications

•

GS2975A HD-LINX® III Multi-Rate SDI Automatic

Reclocker with Dual Differential Outputs

Data Sheet

41487 - 4

SMPTE 424M, 292M, and 259M-C compliant

Supports data rates of 270, 1483.5, 1485, 2967,

2970Mb/s

Supports DVB-ASI at 270Mb/s

Pb-free and RoHS Compliant

Auto and Manual Modes for rate selection

Standards indication in Auto Mode

4:1 input multiplexer patented technology

Choice of dual reclocked data outputs or one data

output and one recovered clock output

Footprint and drop-in compatible with existing

GS2975 designs

Loss of Signal (LOS) Output

Lock Detect Output

On-chip Input and Output Termination

Differential 50Ω inputs and outputs

Mute, Bypass and Autobypass functions

SD/HD indication output to control GS2978 Dual

Slew-Rate Cable Driver

Single 3.3V power supply

Operating temperature range: 0°C to 70°C

SMPTE 424M, SMPTE 292M and SMPTE 259M-C Serial

Digital Interfaces

April 2009

www.gennum.com

Description

The GS2975A is a Multi-Rate Serial Digital Reclocker

designed to automatically recover the embedded clock

from a digital video signal and re-time the incoming video

data.

The GS2975A Serial Digital Reclocker will recover the

embedded clock signal and re-time the data from a SMPTE

424M, SMPTE 292M, or SMPTE 259M-C compliant digital

video signal.

The GS2975A removes the high frequency jitter

components from the bit-serial stream. Input termination is

on-chip for seamless matching to 50Ω transmission lines.

The GS2975A 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

GS2975A 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.

In systems which require passing of non-SMPTE data rates,

the GS2975A can be configured to either automatically or

manually enter a bypass mode in order to pass the signal

without reclocking.

The GS2975A offers a choice of dual reclocked data outputs

or one data output and one recovered clock output. The

device is footprint and drop-in compatible with existing

GS2975 designs, with no additional application changes

required.

The GS2975A is Pb-free, and the encapsulation compound

does not contain halogenated flame retardant.

This component and all homogeneous sub-components are

RoHS compliant.

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