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LXT970AQC Datasheet

  • LXT970AQC

  • LAN TRANSCEIVER|SINGLE|CMOS|QFP|64PIN|PLASTIC

  • 74頁(yè)

  • ETC

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LXT970A
Dual-Speed Fast Ethernet Transceiver
Datasheet
The LXT970A is an enhanced derivative of the LXT970 10/100 Mbps Fast Ethernet PHY
Transceiver that supports selectable driver strength capabilities and link-loss criteria. The
LXT970A supports 100BASE-TX, 10BASE-T, and 100BASE-FX applications. It provides a
Media Independent Interface (MII) for easy attachment to 10/100 Media Access Controllers
(MAC)s and a pseudo-ECL interface for use with 100BASE-FX fiber networks.
The LXT970A supports full-duplex operation at 10 and 100 Mbps. Its operating condition is set
using auto-negotiation, parallel detection or manual control. The encoder may be bypassed for
symbol mode applications.
The LXT970A is fabricated with an advanced CMOS process and requires only a single 5V
power supply. The MII may be operated independently with either a 5V or a 3.3V supply.
Applications
s
s
Combination 10BASE-T/100BASE-TX
Network Interface Cards (NICs)
10/100 Switches, 10/100 Printservers
s
100BASE-FX Network Interface Cards
(NICs)
Product Features
s
s
s
s
s
IEEE 802.3 Compliant:
鈥?10BASE-T and 100BASE-TX using a
single RJ-45 connection.
鈥?Supports auto-negotiation and parallel
detection for legacy systems.
鈥?MII interface with extended register
capability.
Robust baseline wander correction
performance.
100BASE-FX fiber optic capable.
Standard CSMA/CD or full-duplex
operation.
Configurable via MII serial port or external
control pins.
s
s
s
s
s
s
Configurable for DTE or switch
applications.
CMOS process with single 5Vsupply
operation
with provision for interface to 3.3V MII
bus.
Integrated LED drivers.
Integrated supply monitor and line
disconnect during low supply fault.
Available in:
鈥?64-pin TQFP (LXT970ATC)
鈥?64-pin PQFP (LXT970AQC)
Commercial temperature range (0 - 70
o
C
ambient).
As of January 15, 2001, this document replaces the Level One document
LXT970A 鈥?Dual-Speed Fast Ethernet Transceiver.
Order Number: 249099-001
January 2001

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