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General Description

The LXT9782 is an eight-port PHY Fast Ethernet Transceiver that supports IEEE 802.3 physical layer applications at both 10 and 100 Mbps. The LXT9762 offers the same features and functionality in a six-port device. This data sheet uses the singular designation “LXT97x2” to refer to both devices.

Product Features

■ Multiple independent IEEE 802.3-compliant 10/100 ports with integrated filters

■ Proprietary Optimal Signal Processing (OSP?) design improves SNR by 3 dB over ideal analog filters

■ Robust baseline wander correction for improved 100BASE-TX performance

■ 100BASE-FX fiber-optic capability on all ports

■ Supports both auto-negotiation and legacy systems without auto-negotiation capability

■ JTAG boundary scan

■ Multiple Serial MII (SMII) ports for independent PHY port operation

■ Configurable via MDIO port or external control pins

■ Maskable interrupts

■ Very low power consumption(400 mW per port, typical)

■ 3.3V operation

■ 208-pin PQFP and 272-lead BGA

■ 0-70oC ambient temperature range