KSZ8441HL/FHL IEEE 1588v2, Precision Time Protocol-Enabled, 10/100Mbs, Ethernet End-Point Connection with 8- or 16-Bit Host Bus Interface Revision 1.0 General Description The KSZ8441 product is an IEEE 1588v2-enabled ETHERSYNCH Ethernet controller device with an internal MAC and PHY that provides integrated communication and synchronization for a range of industrial Ethernet applications. The KSZ8441 product enables end-point connection in a centralized topology. A flexible 8- or 16-bit general bus interface is provided for interfacing to an external host processor. The KSZ8441 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. The KSZ8441 is built upon Micrels industry-leading Ethernet technology, with features designed-to-offload Extensive general purpose input/output (GPIO) capabilities host processing and streamline overall design, including: are available to use with the IEEE 1588v2 PTP to efficiently and accurately interface to locally-connected 1 integrated 10/100BASE-TX PHY transceiver, devices. featuring the industrys lowest power consumption Complementing the industrys most integrated IEEE Flexible management options that support common 1588v2 device is a precision timing protocol (PTP) v2 standard interfaces software stack that has been pre-qualified with the A robust assortment of power management features KSZ84xx product family. The PTP stack has been including energy-efficient Ethernet (EEE) have been optimized around the KSZ84xx chip architecture, and is designed in to satisfy energy-efficient environments. available in source code format along with Micrels chip Datasheets and support documentation are available on driver. Micrels web site at: www.micrel.com. ETHERSYNCH is a trademark of Micrel, Inc. Magic Packet is a trademark of Advanced Micro Devices. LinkMD is a registered trademark of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. KSZ8441HL/FHL Functional Diagram KSZ8441HL/FHL Functional Diagram Revision 1.0 June 17, 2014 2