PM3351 데이터 시트보기 (PDF) - PMC-Sierra

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PM3351

SINGLE PORT FAST ETHERNET SWITCH

PMC-Sierra 

DATA SHEET

PMC-970113

ISSUE 3

PM3351 ELAN 1X100

SINGLE PORT FAST ETHERNET SWITCH

Spanning Tree Support Data Structures................................................. 96

RTOS Requirements .............................................................................. 97

UDP/IP Protocol Stack Requirements .................................................... 97

SNMP Requirements .............................................................................. 97

Storage Requirements............................................................................ 97

Switching System Initialization ................................................................... 100

Frame Switching Process .......................................................................... 101

Address Learning and Aging...................................................................... 115

Local Address Learning........................................................................ 116

Remote Learning Process .................................................................... 117

Default Hash Bucket............................................................................. 118

Buffer and Queue Management................................................................. 122

Buffer Management .............................................................................. 123

Transmit FIFO Management ................................................................ 124

Broadcast Rate Limiting ....................................................................... 125

Statistics Collection.................................................................................... 126

Messaging Protocol ................................................................................... 128

Spanning Tree Operation........................................................................... 129

RTOS Operation ........................................................................................ 129

UDP/IP Protocol Stack Operation .............................................................. 129

SNMP Operation........................................................................................ 129

Device Interface via PCI ............................................................................ 129

Frame Transfer to Non-ELAN Devices ................................................. 129

Participation in Address Learning ......................................................... 129

Participation in the Messaging Protocol................................................ 129

Accessing Variables and Statistics ....................................................... 129

Byte Ordering ....................................................................................... 129

Default Byte Ordering ........................................................................... 130

Alternate Byte Ordering ........................................................................ 131

ELAN 1x100 / ELAN 8x10 Expansion Bus Data Transfer Rates .......... 131

PCI REGISTER/MEMORY ACCESS ................................................................. 137

PCI Configuration Space ........................................................................... 137

PCI Configuration Registers ................................................................. 138

PCI Memory Space.................................................................................... 147

Local Memory Access........................................................................... 148

Device Control/Status Registers........................................................... 148

Device Configuration Registers ............................................................ 150

Device Debug Registers ....................................................................... 155

Request and Acknowledge Counter Registers ..................................... 155

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE iii

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