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
■ 0-70^oC ambient temperature range