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
100BASE-FX Network Interface Cards
(NICs)
■
■
10/100 PCMCIA Cards
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
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTELÆ PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY
ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S
TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY
EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES
RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER
INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life saving, life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for future definition
and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The LXT971A may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized
errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling
1-800-548-4725 or by visiting Intel's website at http://www.intel.com.
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