KSZ8051MLL Datasheet, PDF (1/51 Pages) Micrel Semiconductor – 10Base-T/100Base-TX Physical Layer Transceiver

KSZ8051MLL
10Base-T/100Base-TX
Physical Layer Transceiver
Data Sheet Rev. 1.0
General Description
The KSZ8051MLL is a single-supply 10Base-T/100Base-
TX Ethernet physical layer transceiver for transmission
and reception of data over standard CAT-5 unshielded
twisted pair (UTP) cable.
The KSZ8051MLL is a highly-integrated, compact solution.
It reduces board cost and simplifies board layout by using
on-chip termination resistors for the differential pairs and
by integrating a low-noise regulator to supply the 1.2V
core.
The KSZ8051MLL offers the Media Independent Interface
(MII) for direct connection with MII-compliant Ethernet
MAC processors and switches.
The KSZ8051MLL provides diagnostic features to facilitate
system bring-up and debugging in production testing and
in product deployment. Parametric NAND tree support
enables fault detection between KSZ8051MLL I/Os and
board. Micrel LinkMD^® TDR-based cable diagnostics
permit identification of faulty copper cabling. Remote and
local loopback functions provide verification of analog and
digital data paths.
The KSZ8051MLL is available in the 48-pin, lead-free
LQFP package (See Ordering Information).
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
• Single-chip 10Base-T/100Base-TX IEEE 802.3
compliant Ethernet Transceiver
• MII Interface support
• Back-to-Back mode support for 100Mbps copper
repeater or media converter
• MDC/MDIO Management Interface for PHY register
configuration
• Programmable interrupt output
• LED outputs for link, activity and speed status indication
• On-chip termination resistors for the differential pairs
• Baseline Wander Correction
• HP Auto MDI/MDI-X for reliable detection and
correction for straight-through and crossover cables
with disable and enable option
• Auto-negotiation to automatically select the highest link
up speed (10/100 Mbps) and duplex (half/full)
• Power-down and power-saving modes
• LinkMD^® TDR-based cable diagnostics for identification
of faulty copper cabling
• Parametric NAND Tree support for fault detection
between chip I/Os and board.
• Loopback modes for diagnostics
• Single 3.3V power supply with VDD I/O options for
1.8V, 2.5V, or 3.3V
• Built-in 1.2V regulator for core
• Available in 48-pin (7mm x 7mm) LQFP package
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Functional Diagram
LinkMD is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
July 2010
M9999-071210-1.0