KSZ8895RQ datasheet(1/116 Pages) MICREL

Part #	KSZ8895RQ

Description	Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface

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Manufacturer	MICREL [Micrel Semiconductor]

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KSZ8895MQ/RQ/FMQ

Integrated 5-Port 10/100 Managed Ethernet

Switch with MII/RMII interface

Rev. 1.5

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

March 2012

M9999-032612-1.5

General Description

The KSZ8895MQ/RQ/FMQ is a highly-integrated,

Layer 2-managed, five-port switch with numerous

features designed to reduce system cost. Intended for

cost-sensitive 10/100Mbps five-port switch systems

with low power consumption, on-chip termination, and

internal

core

power

controllers,

it

supports

high-performance memory bandwidth and shared

memory-based

switch

fabric

with

non-blocking

configuration. Its extensive feature set includes power

management, programmable rate limit and priority

ratio,

tag/port-based

VLAN,

packets

filtering,

four-queue QoS prioritization, management interfaces,

and MIB counters. The KSZ8895 family provides

multiple CPU data interfaces to effectively address

both current and emerging fast Ethernet applications

when port 5 is configured to separate MAC5 with

SW5-MII/RMII and PHY5 with P5-MII/RMII interfaces.

The KSZ8895 family offers three configurations,

providing the flexibility to meet different requirements:



KSZ8895MQ: Five 10/100Base-T/TX transceivers,

one SW5-MII and one P5-MII interface



KSZ8895RQ: Five 10/100Base-T/TX transceivers,

one SW5-RMII and one P5-RMII interface



KSZ8895FMQ: Three 10/100Base-T/TX

transceivers on Ports 1, 2, 5 and two 100Base-FX

transceivers on Ports 3, 4, one SW5-MII and one

P5-MII interface

All registers of MACs and PHYs units can be

managed by the SPI or the SMI interface. MIIM

registers can be accessed through the MDC/MDIO

interface. EEPROM can set all control registers for the

unmanaged mode.

Functional Diagram

Note: SW5 indicates the MAC5 of the switch side, P5 indicates the PHY5 of the Port 5.

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KSZ8895RQ Datasheet(PDF) 1 Page - Micrel Semiconductor

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