LXT901/907
Universal 10BASE-T and AUI Transceivers
Datasheet
The LXT901 and LXT907 Universal 10BASE-T and AUI Transceivers are designed for IEEE
802.3 physical layer applications. They provide all the active circuitry to interface most standard
IEEE 802.3 controllers to either the 10BASE-T media or Attachment Unit Interface (AUI). In
addition to standard 10 Mbps Ethernet, they also support full-duplex operation at 20 Mbps.
The LXT901 and LXT907 are identical except for the function of one pin. The LXT901 offers
selectable termination impedance to allow the use of either shielded or unshielded twisted-pair
cable. The LXT907 offers a signal quality error (SQE) disable function.
Common LXT901 and LXT907 functions include Manchester encoding/decoding, receiver
squelch and transmit pulse shaping, jabber, link testing, and reversed polity detection/correction.
Integrated filters simplify the design work required for FCC-compliance EMI performance.
Applications
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Access devices (DSL, Cable Modems, and
Set-Top Boxes).
Routers/Bridges/Switches/Hubs
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Telecom Backplane
USB to Ethernet Converters
Product Features
Functional Features
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Integrated Manchester Encoder/Decoder
10BASE-T Transceiver
AUI Transceiver
Full-Duplex Capable (20 Mbps)
Diagnostic Features
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Four LED Drivers
AUI/RJ-45 Loopback
Remote Signaling of Link-Down and
Jabber conditions
Convenience Features
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Automatic/Manual AUI/RJ-45 Selection
Automatic Polarity Correction
SQE Disable function (LXT907 only)
Programmable Impedance Driver (LXT901
only)
Power-Down Mode and four loopback
modes
LXT901 available in 64-pin LQFP and 44pin PLCC
LXT907 available in 44-pin PLCC
For technical assistance on this product, please call 1-800-628-8686,
or send an e-mail to support@mailbox.intel.com.
Order Number: 249097-002
June 2001
