PM3351 ELAN 1X100
DATA SHEET
PMC-970113
ISSUE 3
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
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PMC [ PMC-SIERRA, INC ]
