LXT9763

Data Sheet APRIL 2000 LXT9763 Fast Ethernet 10/100 Hex Transceiver with Full MII General Description The LXT9763 is a six-port PHY Fast Ethernet Transceiver that supports IEEE 802.3 physical layer applications at both 10 and 100 Mbps. The mixed-signal adaptive equalization and clock recovery with proprietary Optimal Signal Processing (OSP™) architecture improves SNR 3 dB over ideal analog filters. All six network ports provide a combination twisted-pair (TP) or pseudo-ECL (PECL) interface for a 10/100BASE-TX or 100BASE-FX connection. The LXT9763 supports both half- and fullduplex operation at 10 and 100 Mbps. A fully independent Media Independent Interface (MII) for each port provides maximum control for switch and multi-port adapter applications. In addition to an expanded set of MDIO registers, the LXT9763 provides three discrete LED driver outputs for each port. The LXT9763 requires only a single 3.3V power supply. Revision 1.2 Features Six independent IEEE 802.3-compliant 10BASE-T or 100BASE-TX ports with integrated filters. Proprietary Optimal Signal Processing™ (OSP™) architecture improves SNR by 3 dB over ideal analog filters. Baseline wander correction for improved 100BASETX performance. 100BASE-FX fiber-optic capability on all ports. Supports both auto-negotiation and legacy systems without auto-negotiation capability. JTAG boundary scan. Six MII ports for independent PHY port operation. Configurable via MDIO port or external control pins. Maska...