KSZ8873MLL/FLL/RLL
Integrated 3-Port 10/100 Managed
Switch with PHYs
Rev. 1.2
General Description
The KSZ8873MLL/FLL/RLL are highly integrated 3-port
switch on a chip ICs in industry’s smallest footprint. They
are designed to enable a new generation of low port
count, cost-sensitive and power efficient 10/100Mbps
switch systems. Low power consumption, advanced
power management and sophisticated QoS features
(e.g., IPv6 priority classification support) make these
devices ideal for IPTV, IP-STB, VoIP, automotive and
industrial applications.
The KSZ8873 family is designed to support the GREEN
requirement in today’s switch systems. Advanced power
management schemes include hardware power down,
software power down, per port power down and the
energy detect mode that shuts downs the transceiver
when a port is idle.
KSZ8873MLL/FLL/RLL also offer a by-pass mode, which
enables system-level power saving. In this mode, the
processor connected to the switch through the MII
interface can be shut down without impacting the normal
switch operation.
__________________________________________________________________________________________________________
The configurations provided by the KSZ8873 family
enables the flexibility to meet requirements of different
applications:
•
•
•
KSZ8873MLL: Two 10/100BASE-T/TX transceivers
and one MII interface.
KSZ8873RLL: Two 10/100BASE-T/TX transceivers
and one RMII interface.
KSZ8873FLL: Two 100BASE-FX transceivers and
one MII interface.
The device is available in RoHS-compliant 64-pin LQFP
package. Industrial-grade and Automotive-grade are
also available.
The datasheets and supporting documents can be found
at Micrel’s web site at: www.micrel.com.
Functional Diagram
LinkMD is a registered trademark of Micrel, Inc
Product names used in this datasheet are for identification purposes only and may be trademarks of their respective companies.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2009
M9999-092309-1.2
MICREL [ MICREL SEMICONDUCTOR ]
