KSZ8893FQL
Single-Chip 3-Port Switch
with Fiber Support
Rev. 1.3
General Description
The KSZ8893FQL, a highly integrated single-chip 3 port
Fast Ethernet switch is designed for applications with
fiber support such as media converter. It provides two
10/100 transceivers with patented mixed-signal lowpower technology, three media access control (MAC)
units, a high-speed non-blocking switch fabric, a Layer-2
managed switch and TS-1000 OAM (Operations,
Administration and Management) V2 in a compact
solution. Backwards compatible to the TS-1000 (2002)
specification, TS-1000 V2 is an OAM sub-layer that
provides communication between CO (central office) and
CPE (customer premises equipment).
In fiber mode, one PHY unit can be configurable to
100Base-FX, 100Base-SX, or 10Base-FL fiber for
conversion to 10Base-T and 100Base-TX copper. A fiber
LED driver and post amplifier are also included for
10Base-FL and 100Base-SX applications.
LinkMD®
In copper mode, both PHY units support 10Base-T and
100Base-TX with HP Auto MDI/MDI-X for reliable
detection of and correction for straight-through and
crossover cables, and LinkMD® TDR-based cable
diagnostics for identification of faulty cabling.
The high performance switching engine features an
extensive feature set that includes programmable rate
limiting, tag/port-based VLAN, 4 priority class,
RMII/MII/SNI and CPU control/data interfaces to
effectively address both current and emerging Fast
Ethernet applications.
The KSZ8893FQL comes in a lead-free package (see
Ordering Information).
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Functional Diagram
KSZ8893FQL
LinkMD is a registered trademark of Micrel, Inc
Product/Application 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
October 2007
M9999-101607-1.3
