Intel® LXT914 Flexible Quad Ethernet Repeater

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.

Product Features
■ Four integrated 10BASE-T transceivers and one AUI transceiver on a single chip
■ Programmable DTE/MAU interface on AUI port
■ Seven integrated LED drivers with four unique operational modes
■ On-chip transmit and receive filtering
■ Automatic partitioning of faulty ports, enabled on an individual port basis
■ Automatic polarity detection and correction
■ Programmable squelch level allows extended range in low-noise environments
■ Synchronous or asynchronous interrepeater backplane supports “hot swapping”
■ Inter-repeater backplane allows cascaded repeaters, linking 128 or more 10BASE-T ports
■ Serial port for selecting programmable options
■ 68-pin PLCC (Commercial or Extended temp range)
■ 100-pin PQFP (Commercial temp range)

APPLICATIONs
■ LAN Repeaters
■ Integrated Repeaters
■ Switched Repeater Clusters