LXT9762 Datasheet, PDF (1/78 Pages) Intel Corporation – Fast Ethernet 10/100 Multi-Port Transceiver with Serial MII

LXT9762/9782
Fast Ethernet 10/100 Multi-Port Transceiver with Serial MII
Datasheet
General Description
The LXT9782 is an eight-port PHY Fast Ethernet Transceiver that supports IEEE 802.3 physical
layer applications at both 10 and 100 Mbps. The LXT9762 offers the same features and
functionality in a six-port device. This data sheet uses the singular designation “LXT97x2” to
refer to both devices.
The LXT97x2 interfaces multiple Serial Media Independent Interface (SMII) compliant
controllers to 10BASE-T and/or 100BASE-TX media.
All network ports provide a combination twisted-pair (TP) or pseudo-ECL (PECL) interface for
a 10/100BASE-TX or 100BASE-FX connection.
The LXT97x2 provides three discrete LED drivers for each port, and eight global serial LED
outputs. It supports both half- and full-duplex operation at 10 and 100 Mbps and requires only a
single 3.3V power supply.
Application
s 100BASE-T, 10/100-TX, or 100BASE-FX Switches and multi-port NICs.
Product Features
s Multiple independent IEEE 802.3-
s JTAG boundary scan
compliant 10/100 ports with integrated
filters
s Multiple Serial MII (SMII) ports for
independent PHY port operation
s Proprietary Optimal Signal Processing
(OSP™) design improves SNR by 3 dB
over ideal analog filters
s Robust baseline wander correction for
improved 100BASE-TX performance
s 100BASE-FX fiber-optic capability on all
ports
s Configurable via MDIO port or external
control pins
s Maskable interrupts
s Very low power consumption
(400 mW per port, typical)
s 3.3V operation
s Supports both auto-negotiation and legacy ^{s 208-pin PQFP and 272-lead BGA}
systems without auto-negotiation capability ^{s 0-70oC ambient temperature range}
As of January 15, 2001, this document replaces the Level One document
Order Number: 249039-001
LXT9762/9782 — Fast Ethernet 10/100 Multi-Port Transceiver with Serial MII.
January 2001