KSZ8895MLU(2011) Ver la hoja de datos (PDF) - Micrel

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componentes Descripción

Fabricante

KSZ8895MLU
(Rev.:2011)

Integrated 5-Port 10/100 Managed Switch

Micrel 

Micrel, Inc.

KSZ8895MLU

Contents

Pin Configuration .................................................................................................................................................................. 8

Pin Description ...................................................................................................................................................................... 9

Pin for Strap-In Options...................................................................................................................................................... 15

Introduction ......................................................................................................................................................................... 18

Physical Layer Transceiver................................................................................................................................................ 18

100BASE-TX Transmit ..................................................................................................................................................... 18

10BASE-T Transmit .......................................................................................................................................................... 19

10BASE-T Receive ........................................................................................................................................................... 19

MDI/MDI-X Auto Crossover .............................................................................................................................................. 19

Auto-Negotiation ............................................................................................................................................................... 21

On-Chip Termination Resistors ........................................................................................................................................ 22

Internal 1.2V LDO Controller ............................................................................................................................................ 22

Power Management ............................................................................................................................................................ 23

Normal Operation Mode ................................................................................................................................................... 23

Energy Detect Mode ......................................................................................................................................................... 23

Soft Power-Down Mode.................................................................................................................................................... 24

Power-Saving Mode ......................................................................................................................................................... 24

Port-Based Power-Down Mode ........................................................................................................................................ 24

Switch Core....................................................................................................................................................................... 24

Address Look-Up .............................................................................................................................................................. 24

Learning ............................................................................................................................................................................ 24

Migration ........................................................................................................................................................................... 24

Aging................................................................................................................................................................................. 24

Forwarding ........................................................................................................................................................................ 25

Switching Engine .............................................................................................................................................................. 25

Media Access Controller (MAC) Operation ...................................................................................................................... 25

MII Interface Operation ..................................................................................................................................................... 28

Port 5 MAC 5 SW5-MII Interface ...................................................................................................................................... 28

SNI Interface Operation .................................................................................................................................................... 29

Advanced Functionality...................................................................................................................................................... 31

QoS Priority Support......................................................................................................................................................... 31

Port-Based Priority............................................................................................................................................................ 31

802.1p-Based Priority ....................................................................................................................................................... 31

Spanning Tree Support..................................................................................................................................................... 32

Rapid Spanning Tree Support .......................................................................................................................................... 33

Tail Tagging Mode ............................................................................................................................................................ 33

October 2011

4

M9999-100311-1.1

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