ELLXT971ABE.A4-870479 Cortina Systems Inc, ELLXT971ABE.A4-870479 Datasheet
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ELLXT971ABE.A4-870479
Manufacturer Part Number
ELLXT971ABE.A4-870479
Description
TXRX FAST ETH EXT TEMP 64-PBGA
Manufacturer
Cortina Systems Inc
Specifications of ELLXT971ABE.A4-870479
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
1008-1004
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ELLXT971ABE.A4-870479
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Cortina Systems Inc
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Product Description
Demand for high-performance network applications
requiring lower power is growing r apidly in today’s
marketplace. The Cortina S ystems
Speed 3.3 V 10/100 Ethernet T ransceiver with Carrier
Class Ethernet Support (LXT971A tr ansceiver) is a low -
power, single-port Fast Ethernet transceiver with
significantly expanded Cable Discharge Ev ent (CDE)
protection from Cortina S ystems, Inc. (Cortina
leading provider of Ethernet silicon solutions.
The LXT971A transceiver includes an MII with
extended register capability and an optional 2.5 V
power supply interface for additional power sa vings.
For 100BASE-FX fiber networks, the LXT971A
transceiver is designed with a pseudo-ECL (PECL)
interface for seamless integr ation with common
industry standard fiber modules.
Revolutionary design techniques incorpor ate Cortina’s
Optimal Signal Processing (OSP) architecture, an ideal
combination of digital signal processing and analog
design techniques designed for die siz e, power
consumption, performance, reliabilit y, and testabilit y.
Applications
Low-power, dual-speed network applications for the
LXT971A transceiver include:
• Network interface cards (NICs)
• PCMCIA cards
• Cable modems
• Set-top boxes
• IP phones
Copyright © 2001 - 2008 Cortina Systems, Inc.
LXT971A Transceiver Block Diagram
Cortina Systems
With Carrier Class Ethernet Support
LED/CFG<3:1>
ADDR<4:0>
RDX<4:0>
TXD<4:0>
TX_CLK
RX_CLK
MDDIS
RESET
MDINT
RX_ER
TX_EN
TX_ER
MDIO
RXDV
MDC
COL
CRS
Collision
Detect
TM
Management/
Mode Select
Logic
®
LXT971A Dual-Speed 3.3 V 10/100 Ethernet Transceiver
Error Detect
Data Valid
Carrier
Sense
Register
Set
Register Set
®
LXT971A Dual-
Parallel/Serial
Converter
Converter
Serial to
Parallel
Negotiation
Generator
TM
Clock
Auto
100
10
Manchester
), a
Scrambler
& Encoder
Encoder
Unscrambler
Manchester
Decoder &
Dencoder
10
100
Innovative Packaging
Cortina delivers the LXT971A tr ansceiver in a
7 mm x 7 mm plastic ball grid arr ay (PBGA) packaging.
This revolutionary package helps sav e board space and is
available in the popular industrial temper ature range that
is ideal for network applications in extreme thermal
environments. For flexibility in very low-power
applications, the LXT971A tr ansceiver offers a Sleep
mode in addition to two P ower Down modes. When the
LXT971A transceiver detects an absence of energy on the
twisted pair input, it minimizes power consumption by
shutting down the transmitter and placing the receiv er in
low-power mode.
Cortina Carrier Class Ethernet
Many networking and telecom applications require high-
performance Ethernet components capable of oper ating
under harsh environmental conditions. Carrier Class
Ethernet products from Cortina support oper ation over
the entire extended temper ature range while providing
features that increase reliability. Each device has an
operation lifetime of at least 10 y ears with less than 100
failures per billion hours.
The Carrier Class Ethernet product portfolio from Cortina
includes solutions for the Ethernet ph ysical layer, as well
as repeater technologies at a v ariety of speeds. Carrier
Class Ethernet products from Cortina are ideal for
applications where equipment must function reliably in
uncontrolled environmental conditions such as base
stations, telecom/network switches, factory floor
equipment, and industrial computers.
Shaper
Generator
Pulse
Slicer
OSP
Clock
Media
Select
OSP
Driver
Driver
ECL
TP
Slicer
OSP
+
+
–
–
Supply
Power
100TX
100FX
10BT
Product Brief
+
+
+
–
–
–
Fiber
JTAG
Fiber
TP/
Out
TP/
In
VGC
GND
PWRDWN
REFCLK
TxSLEW<1:0>
TPFOP
TPFON
TDI
TDO
TMS
TCK
TRST
TPFIP
TPFIN
SD/TP
Product Brief Number: 248913-4.1
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ELLXT971ABE.A4-870479 Summary of contents
Page 1
TM Cortina Systems LXT971A Dual-Speed 3.3 V 10/100 Ethernet Transceiver ® With Carrier Class Ethernet Support Product Description Demand for high-performance network applications requiring lower power is growing r apidly in today’s marketplace. The Cortina S ystems ® Speed 3.3 ...
Page 2
Features • 3.3 V power supply • 64-pin PBGA package • -40 ºC to +85 ºC temper ature testing • Sleep mode • MII interface – 2.5 V MII interface option • Optimal Signal Processing ...