The LXT971A is an IEEE compliant Fast Ethernet PHY Transceiver that directly supports both 100BASE-TX and 10BASE-T applications. It provides a Media Independent Interface (MII) for easy attachment to 10/100 Media Access Controllers (MACs). The LXT971A also provides a Low Voltage PECL (LVPECL) interface for use with 100BASE-FX fiber networks.

Product Features

■ 3.3V Operation.

■ Low power consumption (300 mW typical).

■ Low-power “Sleep” mode.

■ 10BASE-T and 100BASE-TX using a single RJ-45 connection.

■ Supports auto-negotiation and parallel detection.

■ MII interface with extended register capability.

■ Robust baseline wander correction performance.

■ 100BASE-FX fiber-optic capable.

■ Standard CSMA/CD or full-duplex operation.

■ Supports JTAG boundary scan.

■ Configurable via MDIO serial port or hardware control pins.

■ Integrated, programmable LED drivers.

■ 64-ball Plastic Ball Grid Array (PBGA).

— LXT971ABC - Commercial (0° to 70°C ambient).

—LXT971ABE - Extended (-40° to 85°C ambient).

■ 64-pin Low-profile Quad Flat Package (LQFP).

— LXT971ALC - Commercial (0° to 70°C ambient).

— LXT971ALE - Extended (-40° to 85°C ambient).

Applications

■ Combination 10BASE-T/100BASE-TX or 100BASE-FX Network Interface Cards (NICs)

■ 10/100 PCMCIA Cards

■ Cable Modems and Set-Top Boxes