gs2965 Gennum Corporation, gs2965 Datasheet

gs2965

Manufacturer Part Number

gs2965

Description

Gs2965 Multi-rate Sdi Reclocker With Equalization & De-emphasis

Manufacturer

Gennum Corporation

Datasheet

1.GS2965.pdf (3 pages)

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GS2965 Multi-Rate SDI Reclocker with Equalization & De-emphasis

Features

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Applications

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GS2965 Multi-Rate SDI Reclocker with Equalization &

De-emphasis

Product Brief

52282 - A

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

Supports DVB-ASI at 270Mb/s

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

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

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

Small footprint QFN package (5mm x 5mm)

Pb-free and RoHS compliant

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

cable serial digital interfaces

support DC coupling to industry-standard differential

logic

on-chip 100Ω differential data input/output termination

selectable 400mVppd or 800mVppd output swing on

each output

seamless interface to other Gennum products

April 2009

www.gennum.com

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.

Proprietary & Confidential

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gs2965 Summary of contents

Page 1

... 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 ...

Page 2

... Phase Frequency Detector DDI0 DDI0 Equalizer/ Data Mux Phase DDI1 Detector DDI1 Selectable Divide LOS SPI Detect LOS GS2965 Multi-Rate SDI Reclocker with Equalization & De-emphasis Product Brief 52282 - A April 2009 CP_CAP LF+ LDO Retimer Charge VCO Pump Selectable Divide Control LOCKED SD/HD ...

Page 3

... All other trademarks mentioned are the properties of their respective owners. GENNUM and the Gennum logo are registered trademarks of Gennum Corporation. © Copyright 2009 Gennum Corporation. All rights reserved. www.gennum.com GS2965 Multi-Rate SDI Reclocker with Equalization & De-emphasis Product Brief 52282 - A April 2009 ...

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