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PM3351-SW Datasheet(PDF) 4 Page - PMC-Sierra, Inc |
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PM3351-SW Datasheet(HTML) 4 Page - PMC-Sierra, Inc |
4 / 268 page PM3351 ELAN 1X100 DATA SHEET PMC-970113 ISSUE 3 SINGLE PORT FAST ETHERNET SWITCH PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE ii DC CHARACTERISTICS ..................................................................................... 21 Absolute Maximum Ratings ......................................................................... 21 Recommended Operating Conditions .......................................................... 21 D.C. Characteristics ..................................................................................... 22 AC CHARACTERISTICS ..................................................................................... 23 PCI Bus Interface......................................................................................... 24 MII Interface ................................................................................................. 25 Memory Interface ......................................................................................... 27 15 nS SRAM AC Timing ......................................................................... 27 150 ns EEPROM/EPROM AC Timing .................................................... 28 60 ns EDO DRAM AC Timing................................................................. 29 Clocking ....................................................................................................... 31 Miscellaneous .............................................................................................. 31 FUNCTIONAL DESCRIPTION............................................................................. 32 Overview ...................................................................................................... 32 System Components.................................................................................... 32 System Block Diagram ........................................................................... 33 System Memory Map.............................................................................. 34 Device Internal Blocks ................................................................................. 37 Switch Processor .................................................................................... 37 100Mbit/s Ethernet MAC Interface ......................................................... 38 Multichannel DMA Controller ....................................................................... 43 Memory Controller ....................................................................................... 46 PCI Expansion Port...................................................................................... 47 Watchdog Timer Facility ......................................................................... 51 Device Configuration .............................................................................. 52 System Bootstrap Image ........................................................................ 54 Configuration Parameters....................................................................... 60 Self Test and Error Reporting ................................................................. 61 Data Structures ............................................................................................ 63 Switch Processor Operating Environment .............................................. 64 Packet Buffers ........................................................................................ 68 Data Descriptors ..................................................................................... 71 Transfer Rings ........................................................................................ 74 Local Port Descriptor and Port Descriptor Counters............................... 76 Expansion Port Descriptor Table ............................................................ 84 Address Hash Table ............................................................................... 86 Free Pools .............................................................................................. 94 |
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