GS9064 Datasheet, PDF (1/10 Pages) Gennum Corporation – GS9064 SD SDI Adaptive Cable Equalizer

GS9064 SD SDI
Adaptive Cable Equalizer
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
• 50Ω 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^™ II GS1524 multirate SDI
adaptive cable equalizer
APPLICATIONS
• SMPTE 259M Coaxial Cable Serial Digital Interfaces
DATA SHEET
DESCRIPTION
The GS9064 is a second-generation high-speed bipolar
integrated circuit designed to equalize and restore signals
received over 75Ω 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.
MCLADJ
SDI
SDI
CABLE LENGTH INDICATOR/ADJUSTOR
CARRIER DETECT
MUTE
EQUALIZER
DC RESTORE
OUTPUT
AGC
GS9064 FUNCTIONAL BLOCK DIAGRAM
CLI
CD/MUTE
BYPASS
SDO
SDO
Revision Date: June 2004
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. [phone] Fax. [phone] E-mail: [e-mail]
www.gennum.com
Document No. 22212 - 2