KS8997 データシートの表示（PDF） - Micrel

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KS8997

8-Port 10/100 Integrated Switch with PHY and Frame Buffer

Micrel 

Micrel, Inc.

KS8997/KSZ8997

Contents

System Level Applications ................................................................................................................................................6

Pin Description ..................................................................................................................................................................7

I/O Grouping....................................................................................................................................................................11

I/O Descriptions...............................................................................................................................................................11

Pin Configuration.............................................................................................................................................................14

Functional Overview: Physical Layer Transceiver ..........................................................................................................15

100BaseTX Transmit...................................................................................................................................................15

100BaseTX Receive....................................................................................................................................................15

PLL Clock Synthesizer ................................................................................................................................................15

Scrambler/De-Scrambler (100BaseTX only)...............................................................................................................15

10BaseT Transmit .......................................................................................................................................................15

10BaseT Receive ........................................................................................................................................................15

Power Management ....................................................................................................................................................15

Power Save Mode ..............................................................................................................................................15

MDI/MDI-X Auto Crossover.........................................................................................................................................16

Auto-Negotiation..........................................................................................................................................................16

Functional Overview: Switch Core ..................................................................................................................................17

Address Look-Up.........................................................................................................................................................17

Learning.......................................................................................................................................................................17

Migration......................................................................................................................................................................17

Aging ...........................................................................................................................................................................17

Forwarding...................................................................................................................................................................17

Switching Engine.........................................................................................................................................................17

MAC (Media Access Controller) Operation .................................................................................................................18

Inter-Packet Gap (IPG) ......................................................................................................................................18

Backoff Algorithm ...............................................................................................................................................18

Late Collision......................................................................................................................................................18

Illegal Frames.....................................................................................................................................................18

Flow Control .......................................................................................................................................................18

Half-Duplex Back Pressure ................................................................................................................................18

Broadcast Storm Protection ...............................................................................................................................18

Programmable Features .................................................................................................................................................19

Priority Schemes .........................................................................................................................................................19

Per Port Method ..........................................................................................................................................................19

802.1p Method ............................................................................................................................................................19

IPv4 DSCP Method .....................................................................................................................................................19

Other Priority Considerations ......................................................................................................................................19

VLAN Operation ..............................................................................................................................................................20

Station MAC Address (control frames only) ....................................................................................................................21

EEPROM Operation ........................................................................................................................................................21

EEPROM Memory Map...............................................................................................................................................21

General Control Register.............................................................................................................................................21

February 2007

4

M9999-022807-1.1

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