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Gennum Corporation - HD-LINX-TM II Multi-Rate SDI Adaptive Cable Equalizer

Numéro de référence GS1524
Description HD-LINX-TM II Multi-Rate SDI Adaptive Cable Equalizer
Fabricant Gennum Corporation 
Logo Gennum Corporation 





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GS1524 fiche technique
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GS1524 HD-LINX™ II
Multi-Rate SDI Adaptive
Cable Equalizer
GS1524 Data Sheet
Key Features
• SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
• automatic cable equalization
• multi-standard operation from 143Mb/s to
1.485Gb/s
• supports DVB-ASI at 270Mb/s
• manual bypass (useful for low data rates with slow
rise/fall times)
• performance optimized for 270Mb/s and 1.485Gb/s
• typical maximum equalized length of Belden 1694A
cable: 140m at 1.485Gb/s, 350m at 270Mb/s
• 50Ω differential output (with internal 50Ω pull-ups)
• Pb-free and RoHS Compliant
Key Specifications
• cable length indicator for SMPTE 259M inputs
• output mute based on max cable length adjust or
manual override
• single 3.3V power supply operation
• operating temperature range: 0°C to +70°C
Applications
• SMPTE 292M, SMPTE 344M and SMPTE 259M
Coaxial Cable Serial Digital Interfaces
Description
The GS1524 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 1.485Gb/s. The GS1524 is
designed to support SMPTE 292M, SMPTE 344M and
SMPTE 259M, and is optimized for performance at
270Mb/s and 1.485Gb/s.
The GS1524 features DC restoration to compensate for
the DC content of SMPTE pathological test patterns.
The GS1524 also incorporates a Cable Length Indicator
(CLI) that provides an indication of the amount of cable
being equalized for data rates up to 360Mb/s.
A voltage programmable mute threshold (MCLADJ) is
included to allow muting of the GS1524 output when an
approximate selected cable length is reached for
SMPTE 259M signals. This feature allows the GS1524
to distinguish between low amplitude SD-SDI signals
and noise at the input of the device. The CD/MUTE pin
provides an indication of the GS1524 mute status in
addition to functioning as a mute control input. The SD
outputs of the GS1524 may be forced to a mute state by
applying a voltage to the CD/MUTE pin.
Power consumption is typically 265mW using a 3.3V
power supply.
This component and all homogeneous subcomponents
are RoHS compliant.
MCLADJ
SDI
SDI
CABLE LENGTH INDICATOR/ADJUSTOR
CARRIER DETECT
MUTE
EQUALIZER
DC RESTORE
OUTPUT
AGC
Functional Block Diagram
14976 - 7 June 2005
CLI
CD/MUTE
BYPASS
SDO
SDO
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