LXT971A Datasheet, PDF (1/90 Pages) Intel Corporation – 3.3V Dual-Speed Fast Ethernet PHY Transceiver

Intel^® LXT971A
3.3V Dual-Speed Fast Ethernet PHY Transceiver
Datasheet
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.
This document also supports the LXT971 device.
The LXT971A supports full-duplex operation at 10 Mbps and 100 Mbps. Its operating condition
can be set using auto-negotiation, parallel detection, or manual control.
The LXT971A is fabricated with an advanced CMOS process and requires only a single 3.3V
power supply.
Applications
■ Combination 10BASE-T/100BASE-TX or ■ 10/100 PCMCIA Cards
100BASE-FX Network Interface Cards
(NICs)
■ Cable Modems and Set-Top Boxes
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).
Order Number: 249414-002
August 2002