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KSZ8842-PMQLI

Micrel Semiconductor
Part Number KSZ8842-PMQLI
Manufacturer Micrel Semiconductor
Description 2-Port Ethernet Switch
Published Jul 5, 2010
Detailed Description www.micrel.com PMQL/PMQLI Product Brief KSZ8842 www.DataSheet4U.com 2-Port Ethernet Switch with PCI Interface Descrip...
Datasheet PDF File KSZ8842-PMQLI PDF File

KSZ8842-PMQLI
KSZ8842-PMQLI

Overview
www.
micrel.
com PMQL/PMQLI Product Brief KSZ8842 www.
DataSheet4U.
com 2-Port Ethernet Switch with PCI Interface Description The KSZ8842-PMQL is the industry’s first 2-port switch with a PCI CPU interface.
An Industrial Temperature grade part, the KSZ8842-PMQLI will also available from Q1, 2006.
The KSZ8842P is a proven, 4th generation, integrated, fully managed Layer 2 switch that is entirely compliant to IEEE802.
3u standards.
The KSZ8842P can be configured as a low-latency repeater to allow for ‘cut thru’ in latency critical Embedded or Industrial Ethernet applications.
For industrial automation applications, it runs in half-duplex mode.
The KSZ8842P offers an extensive feature set that includes tag/port-based VLAN, QoS priority management, MAC filtering function, MIB counters, and CPU control/data interfaces to effectively address both current and emerging Fast Ethernet applications.
The KSZ8842P contains two 10/100 transceivers with patented mixed-signal low-power technology, two 1K entry media access control (MAC) units, a separate DMA channel, a high-speed non-blocking switch fabric, a dedicated 1K entry forwarding table, and an on-chip frame buffer memory.
Benefits In addition to offering all of the features of an integrated Layer 2 managed switch: • 2-port switch with 32 bit/33MHz PCI bus for different host processor interfaces • Fully compliant to the IEEE802.
3u standard • Repeater mode capabilities to allow for ‘cut-thru’ in latency critical Industrial Ethernet or Embedded Ethernet applications • Dynamic buffer memory scheme – Essential for applications such as Video over IP where image jitter is unacceptable • Micrel LinkMDTM cable diagnostic capabilities to determine cable length, determine distance to fault, and to diagnose faulty cables • HP Auto MDIX crossover with disable and enable option • Industrial temperature support: –40oC to +85oC • Four priority queues to handle voice, video, data, and control packets Block Diagram HP Auto MDI/MDI-X HP Auto MD...


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