product brief
Intel
Internet Exchange
Architecture
Intel
LXT380/381
Octal E1 Line Interface Unit
Intel Delivers
Intel introduces a family of T1/E1 3.3V
transceivers that are pin-to-pin and software
compatible. This LXT product series includes
the Intel
LXT380 and LXT381 (detailed in this
product brief), and the LXT384, LXT386, and
LXT388 (detailed in separate product briefs).
With Intel's range of transceivers, you have the
flexibility to change from E1-only designs to
T1/E1 designs and migrate from two to eight
ports (or vice versa) with little time and effort.
The Intel
LXT380 is an octal short-haul
PCM transceiver for use in 2.048Mbps (E1)
applications. It incorporates eight receivers
and eight transmitters in a single 144-pin
LQFP or 160 PBGA package. Controllable
through either hardware or host mode (serial
or parallel interface), the LXT380 exceeds the
latest ETSI return loss recommendations. You
can configure the LXT380 as a seven-channel
transceiver for SDH tributary post cards with
the additional channel configured as a G.772-
compliant nonintrusive performance monitor.
The Intel
LXT381 provides the same features,
without support for nonintrusive performance
monitoring or clock recovery.
Intel Advantage
With the introduction of its LXT38x series,
Intel offers a transceiver that supports G.772
nonintrusive performance monitoring. This
feature allows one channel to eavesdrop on
other channels for remote monitoring and
debugging purposes without interrupting
service. This powerful tool can help you
reduce system downtime and achieve faster
time-to-market.
The Intel
LXT380/381 incorporates fast
tri-stateable drivers and a constant delay Jitter
Attenuator (JA). The Intel
Hitless Protection
Switching (Intel
HPS) helps you reduce system
cost by eliminating costly mechanical relays
and opto-isolators in 1+1 protection and
redundancy applications. The switch from
primary to backup board is less than 1s--
more than 1,000 times faster than mechanical
relays--and helps eliminate loss of frame
synchronization. A maximum of 1 bit error is
generated when Intel
HPS is used instead of
relays, which can generate more than 6,000
bit errors. Analog and digital JTAG can also
help reduce test costs by reducing test times.
Alternate solutions require triple the PCB
space or more for an eight-channel 1+1
protection application.
Wireless
Infrastructure
DSU/CSU
Router Access Switch
Remote
Access
Remote
Access
Remote Access
Multiplexer
Internet Access
Digital Loop
Carrier
SDH Ring
T1/E1
T1/E1
T1/E1
Add-Drop MUX
Add-Drop MUX
T1/E1 OC-3
POTS Service
POTS
BRI
POTS
BRI
Modem
xDSL
Modem
xDSL
Application Diagram
Order Number: 249023-002 Printed in USA/0501/3K/ASI/DC
Copyright 2001 Intel Corporation
For more information, visit the Intel Web site at:
developer.intel.com
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Features
s
Intel
Hitless Protection Switching
s
Nonintrusive performance monitor (LXT380)
s
3.3V supply with 5V I/O capability
s
Analog and digital JTAG
s
15x15mm BGA package
Benefits
s
Helps eliminate expensive relays needed for 1+1
redundant applications
s
Allows eavesdropping on other channels without
interrupting service
s
Easy integration and lower power consumption
s
Helps reduce test costs and increase test coverage
s
Leads to higher integration, helps reduce PCB real
estate, and helps increase ports per card
Item
Support Products
Application Notes
Description
s
LXT380 Octal E1 G.703 Transceiver Data Sheet
s
LXT380 Design Assistant
s
LXD380--Evaluation Board for Octal E1 Applications Developer Manual
s
LXT380/381 Frequently Asked Questions (FAQs)
s
LXT380/381-- G.703 Annex B Compliance
s
Timing Interface using the LXT380
s
LXT380/381-- Receive Return Loss
s
Transformer Specification for Intel
Transceiver Applications
s
LXT380/381/384/386/388 Redundancy Applications
s
LXT380/384 Octal T1/E1 LIUs-- Interfacing with the Transwitch Octal Framer
s
Intel
Hitless Protection Switching Backup Board not Powered
Order Number
248995
248836
249212
249181
249198
249129
249130
249133
249134
249136
249143
Support Collateral/Tools
Intel Access
Developer Web Site
http://developer.intel.com
Intel
Internet Exchange Architecture Home Page
http://intel.com/IXA
Networking Components Home Page
http://developer.intel.com/design/network
Intel Literature Center
http://developer.intel.com/design/litcentr
(800) 548-4725 7 a.m. to 7 p.m. CST (U.S. and Canada)
International locations please contact your local sales office.
General Information Hotline
(800) 628-8686 or (916) 356-3104 5 a.m. to 5 p.m. PST
Applications
s
SDH tributary interfaces
s
Digital cross connects
s
Public/private switching trunk line interfaces
s
Microwave transmission systems
s
Channel banks
s
E1-E3 multiplexers
Intel
Internet Exchange Architecture
Intel
Internet Exchange Architecture (IXA) is an end-to-end
family of high-performance, flexible and scalable hardware
and software development building blocks designed to
meet the growing performance requirements of today's
networks. Based on programmable silicon and software
building blocks, Intel
IXA solutions enable faster devel-
opment, more cost-effective deployment, and future
upgradability of network and communications systems.
Additional information can be found at www.intel.com/IXA.
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