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LU3X31T-T64 Datasheet

  • LU3X31T-T64

  • LU3X31T-T64 Single-Port 3 10/100 Ethernet Transceiver TX

  • 44頁

  • AGERE

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Preliminary Data Sheet
July 2000
LU3X31T-T64 Single-Port 3 V
10/100 Ethernet Transceiver TX
Overview
The LU3X31T-T64 is a fully integrated
10/100 Mbits/s physical layer device with an inte-
grated transceiver. It is provided in a 64-pin TQFP
package with low-power operation and powerdown
modes. Typical applications for this part are CardBus
and PCMCIA Ethernet products. Operating at 3.3 V,
the LU3X31T-T64 is a powerful device for the forward
migration of legacy 10 Mbits/s products and noncom-
pliant (does not have autonegotiation) 100 Mbits/s
devices. The LU3X31T-T64 was designed from the
beginning to conform fully with all pertinent specifica-
tions, from the
ISO
*
/IEC 11801 and
EIA
鈥?/div>
/TIA 568
cabling guidelines to
ANSI
鈥?/div>
X3.263 TP-PMD to
IEEE
摟
802.3 Ethernet specifications.
s
100 Mbits/s PLL, combined with the digital adap-
tive equalizer, robustly handles variations in rise-
fall time, excessive attenuation due to channel
loss, duty-cycle distortion, crosstalk, and baseline
wander
Transmit rise-fall time can be manipulated to pro-
vide lower emissions, amplitude fully compatible
for proper interoperability
Programmable scrambler seed for better FCC
compliancy
s
s
s
IEEE
802.3u Clause 28 compliant autonegotiation
for full 10 Mbits/s and 100 Mbits/s control
Fully configurable via pins and management
accesses
Extended management support with interrupt
capabilities
PHY MIB support
Symbol mode option
Low-power operation: <150 mA max
Low autonegotiation power: <30 mA
Very low powerdown mode: <5 mA
64-pin TQFP package (10 mm x 10 mm x 1.4 mm)
s
s
Features
s
s
Single-chip integrated physical layer and trans-
ceiver for 10Base-T and/or 100Base-T functions
s
s
s
IEEE
802.3 compatible 10Base-T and 100Base-T
physical layer interface and
ANSI
X3.263 TP-PMD
compatible transceiver
Built-in analog 10 Mbits/s receive filter, eliminating
the need for external filters
Built-in 10 Mbits/s transmit filter
10 Mbits/s PLL exceeding tolerances for both pre-
amble and data jitter
s
s
s
s
s
s
*
ISO
is a registered trademark of The International Organization
for Standardization.
鈥?/div>
EIA
is a registered trademark of The Electronic Industries Asso-
ciation.
鈥?/div>
ANSI
is a registered trademark of The American National Stan-
dards Institute, Inc.
摟
IEEE
is a registered trademark of The Institute of Electrical and
Electronics Engineers, Inc.

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