LXT971A/972A/972M - Dual-Speed Fast Ethernet Transceiver 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 pseudo-ECL interface for use with 100BASE-FX fiber networks. 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. It supports a low-power sleep mode for reduced power consumption. The LXT971A is fabricated with an advanced CMOS process and requires only a single 3.3V power supply. The LXT972A and LXT972M provide similar capabilities with a reduced feature set for applications that do not require sleep mode or fiber support. These products are available in RoHS compliant packages.
Applications
  • Wireless Access Points
  • Combination 10BASE-T/100BASE-TX or 100BASE-FX Network Interface Cards (NICs)
  • 10/100 PCMCIA Cards
  • Cable Modems and Set-Top Boxes
  • Networked Printers
    • Features and Benefits
  • 3.3V Operation
  • Low power consumption (300 mW typical)
  • Low-power "Sleep" mode. (LXT971A only)
  • 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. (LXT971A only)
  • Standard CSMA/CD or full-duplex operation
  • Configurable via MDIO serial port or hardware control pins
  • Integrated, programmable LED drivers
  • 64-pin Plastic Ball Grid Array (PBGA) (LXT971A only) LXT971ABC - Commercial (0 °C to 70 °C ambient)
  • LXT971ABE - Extended (-40 °C to 85 °C ambient)
  • 64-pin Low-profile Quad Flat Package (LQFP) LXT971ALC - Commercial (0 °C to 70 °C ambient)
  • LXT971ALE - Extended (-40 °C to 85 °C ambient)
  • LXT972ALC - Commercial (0 °C to 70 °C ambient)

     

  • 48-pin Low-profile Quad Flat Package (LQFP) LXT972MLC - Commercial (0 °C to 70 °C ambient))
    • Product Change Notifications
    PCN106766 - 02 Ethernet Phy, MAC, Framers, T1/E1, Legacy Phy and Framers - Product Marking and Packaging Change, Product Marking 2006-Oct-12
    PCN0107-02.1 Ethernet Phy, MAC, Framers, T1/E1, Legacy Phy and Framers - Product Marking Change 2007-Jan-24
    PCN0707-04.0 LXT360, LXT380, LXT384, LXT386 & LXT971; Manufacturing Site 2007-Jul-23
    DCL200711-01 Early Shipments due to IT Shutdown and Conversion 2007-Nov-06
    DCL0108-01.0 Product Code Change 2008-Jan-04
    DCL200802-01.0 Cortina Systems, Inc. Products (Ethernet Phy, MAC, Framers, T1/E1, Transport and Legacy Phy, & EPON), DCL200802-01.0; FYI – Europe & Middle Eastern Region Orders and Payment Transition 2008-Feb-05
    PCN0308-04.0 Cortina Systems, Pack Change, Select QFP's 2008-Mar-25
    PCN0308-01.0 Cortina Systems, Product Marking Change, FYI 2008-Mar-13
    DCL200804-01 Cortina Systems, Inc. Products (Ethernet Phy, MAC, Framers, T1/E1, Transport and Legacy Phy, & EPON), ; FYI – Latin America Regions Order and Payment Transition, DCL200804-01 2008-Apr-14
    PCN400579 Select HQFP 208, LQFP 64/32 Packages, Manufacturing Site Change 2008-May-09
    PCN400626 Cortina Systems 400626_LXT971_Site_Change_FYI 2008-Jul-17
    PCN400579-01 Cortina Systems, Select HQFP 208, LQFP 64 & 32 2008-Oct-20