GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3

Tel. +1 (905) 632-2996

Fax. +1 (905) 632-5946

E-mail: info@gennum.com

www.gennum.com

Revision Date: June 2004

Document No. 22212 - 2

DATA SHEET

KEY FEATURES

• SMPTE 259 and SMPTE 344 compliant

• automatic cable equalization

• supports DVB-ASI at 270Mb/s

• typical maximum equalized length of Belden 1694A

cable at 270Mb/s is 350m

•50

Ω differential output (with internal 50Ω pull-ups)

• cable length indicator

• output mute based on maximum cable length adjust or

manual override

• Pb-free and Green

• single 3.3V power supply operation

• operating temperature range: 0°C to +70°C

• pin compatible with HDLINX

adaptive cable equalizer

APPLICATIONS

•

SMPTE 259M Coaxial Cable Serial Digital Interfaces

DESCRIPTION

The GS9064 is a second-generation high-speed bipolar

integrated circuit designed to equalize and restore signals

received over 75

Ω co-axial cable at data rates from

143Mb/s up to 540Mb/s. The GS9064 is designed to

support SMPTE 344M and SMPTE 259M and is optimized

for performance at 270Mb/s.

The GS9064 features DC restoration to compensate for the

DC content of SMPTE pathological test patterns, and

incorporates a Cable Length Indicator (CLI) that provides a

linear indication of the amount of cable being equalized.

A voltage programmable mute threshold (MCLADJ) is

included to allow muting of the GS9064 output when a

selected cable length is reached. This feature allows the

GS9064 to distinguish between low amplitude SDI signals

and noise at the input of the device. The CD/MUTE pin

provides an indication of the GS9064 mute status in

addition to functioning as a mute control input. The output

of the GS9064 may be forced to an active or a mute

condition by applying a voltage to the CD/MUTE pin.

GS9064 FUNCTIONAL BLOCK DIAGRAM

CABLE LENGTH INDICATOR/ADJUSTOR

CARRIER DETECT

MUTE

EQUALIZER

DC RESTORE

OUTPUT

AGC

CLI

CD/MUTE

SDO

SDO

SDI

SDI

MCLADJ

BYPASS

GS9064 SD SDI

Adaptive Cable Equalizer