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LXT914 データシートの表示(PDF) - Intel

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LXT914 Datasheet PDF : 45 Pages
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Intel® LXT914 Flexible Quad Ethernet
Repeater
Datasheet
The Intel® LXT914 Flexible Quad Ethernet Repeater (called hereafter the LXT914 Repeater) is
an integrated multi-port repeater designed for mixed-media networks. It provides all the active
circuitry required for the repeater function in a single CMOS device. It includes one Attachment
Unit Interface (AUI) port and four 10BASE-T transceivers. The AUI port is mode selectable:
DTE mode allows connection of an external transceiver (10BASE2, 10BASE5, 10BASE-T or
FOIRL) or a drop cable. MAU mode creates a MAU output allowing direct connection to
another DTE interface. The 10BASE-T transceivers are entirely self-contained with internal
filters which simplify the design work required for FCC-compliant EMI performance.
An inter-repeater backplane interface allows 128 or more 10BASE-T ports to be cascaded
together. In addition, a serial port provides information for network management.
The LXT914 Repeater requires only a single 5-volt power supply due to an advanced CMOS
fabrication process.
Product Features
Four integrated 10BASE-T transceivers Synchronous or asynchronous inter-
and one AUI transceiver on a single chip
repeater backplane supports “hot
Programmable DTE/MAU interface on
swapping”
AUI port
Inter-repeater backplane allows cascaded
Seven integrated LED drivers with four
unique operational modes
repeaters, linking 128 or more 10BASE-T
ports
On-chip transmit and receive filtering
Serial port for selecting programmable
Automatic partitioning of faulty ports,
options
enabled on an individual port basis
68-pin PLCC (Commercial or Extended
Automatic polarity detection and correction temp range)
Programmable squelch level allows
100-pin PQFP (Commercial temp range)
extended range in low-noise environments
Applications
LAN Repeaters
Integrated Repeaters
Switched Repeater Clusters
Order Number: 248989, Revision: 003
31-Oct-2005

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