NLXT914PE-B3 Datasheet, PDF (1/45 Pages) Intel Corporation – Intel® LXT914 Flexible Quad Ethernet Repeater

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