KS8995M(2003) データシートの表示（PDF） - Micrel

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KS8995M
(Rev.:2003)

Integrated 5-Port 10/100 Managed Switch

Micrel 

KS8995M

Micrel

Table of Contents

System Level Applications ......................................................................................................................................... 7

Pin Description (by Number) ...................................................................................................................................... 9

Pin Description (by Name) ........................................................................................................................................ 15

Pin Configuration ...................................................................................................................................................... 21

Introduction ........................................................................................................................................................... 22

Functional Overview: Physical Layer Transceiver ................................................................................................ 22

100BaseTX Transmit ........................................................................................................................................... 22

100BaseTX Receive ............................................................................................................................................ 22

PLL Clock Synthesizer ......................................................................................................................................... 22

Scrambler/De-scrambler (100BaseTX only) ........................................................................................................ 22

100BaseFX Operation ......................................................................................................................................... 22

100BaseFX Signal Detection ............................................................................................................................... 22

100BaseFX Far End Fault ................................................................................................................................... 23

10BaseT Transmit ............................................................................................................................................... 23

10BaseT Receive ................................................................................................................................................ 23

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

MDI/MDI-X Auto Crossover ................................................................................................................................. 23

Auto-Negotiation .................................................................................................................................................. 23

Functional Overview: Switch Core .......................................................................................................................... 24

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

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

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

Aging

........................................................................................................................................................... 24

Forwarding ........................................................................................................................................................... 24

Switching Engine ................................................................................................................................................. 24

MAC Operation .................................................................................................................................................... 24

Inter-Packet Gap (IPG) ................................................................................................................................ 24

Backoff Algorithm ......................................................................................................................................... 24

Late Collision ............................................................................................................................................... 26

Illegal Frames .............................................................................................................................................. 26

Flow Control ................................................................................................................................................. 26

Half-Duplex Back Pressure .......................................................................................................................... 26

Broadcast Storm Protection ......................................................................................................................... 26

MII Interface Operation ........................................................................................................................................ 26

SNI Interface Operation ....................................................................................................................................... 28

Advanced Functionality ............................................................................................................................................ 28

Spanning Tree Support ........................................................................................................................................ 28

Special Tagging Mode ......................................................................................................................................... 29

IGMP Support ...................................................................................................................................................... 30

Port Mirroring Support ......................................................................................................................................... 31

VLAN Support ...................................................................................................................................................... 31

Rate Limit Support ............................................................................................................................................... 32

Configuration Interface ........................................................................................................................................ 33

I2C Master Serial Bus Configuration ............................................................................................................ 35

SPI Slave Serial Bus Configuration ............................................................................................................. 35

MII Management Interface (MIIM) ....................................................................................................................... 38

M9999-120403

4

December 2003

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