KSZ8462HL Datasheet, PDF (1/279 Pages) Micrel Semiconductor – IEEE 1588 Precision Time Protocol-Enabled Two-Port 10/100Mb/s Ethernet Switch with 8 or 16 Bit Host Interface

KSZ8462HL/KSZ8462FHL
IEEE 1588 Precision Time Protocol-Enabled
Two-Port 10/100Mb/s Ethernet Switch
with 8 or 16 Bit Host Interface
Revision 1.0
General Description
The KSZ8462 ETHERSYNCH™ product line consists of
IEEE 1588v2-enabled Ethernet switches, providing
integrated communications and synchronization for a
range of industrial Ethernet applications.
The KSZ8462 ETHERSYNCH product enables distributed,
daisy−chained topologies preferred for Industrial Ethernet
networks. Conventional centralized (i.e., star−wired)
topologies are also supported for dual−homed, fault
tolerant arrangements.
A flexible 8- or 16−bit general bus interface is provided for
interfacing to an external host processor.
The KSZ8462 devices incorporate the IEEE 1588v2
protocol. Sub-microsecond synchronization is available via
the use of hardware based time stamping and transparent
clocks making it the ideal solution for time synchronized
Layer 2 communication in critical industrial applications.
Extensive general purpose I/O (GPIO) capabilities are
available to use with the IEEE 1588v2 PTP to efficiently
and accurately interface to locally-connected devices.
Complementing the industry’s most-integrated IEEE
1588v2 device is a precision timing protocol (PTP) v2
software stack that has been pre−qualified with the
KSZ84xx product family. The PTP stack has been
optimized around the KSZ84xx chip architecture, and is
available in source code format along with Micrel’s chip
driver.
The wire−speed, store−and−forward switching fabric
provides a full complement of quality-of-service (QoS) and
congestion control features optimized for real−time
Ethernet.
ETHERSYNCH™
The KSZ8462 product is built upon Micrel’s
industry−leading Ethernet technology, with features
designed to offload host processing and streamline your
overall design:
• Wire−speed Ethernet switching fabric with extensive
filtering
• Two integrated 10/100BASE-TX PHY transceivers,
featuring the industry’s lowest power consumption
• Full−featured QoS support
• Flexible management options that support common
standard interfaces
A robust assortment of power-management features
including energy-efficient Ethernet (EEE) have been
designed in to satisfy energy-efficient environments.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
KSZ8462 Top Level Architecture
ETHERSYNCH and LinkMD are trademarks of Micrel, Inc.
Magic Packet is a trademark of Advanced Micro Devices, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
June 11, 2014
Revision 1.0