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KSZ8842-32MVLI Datasheet(PDF) 4 Page - Micrel Semiconductor |
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KSZ8842-32MVLI Datasheet(HTML) 4 Page - Micrel Semiconductor |
4 / 141 page Micrel, Inc. KSZ8842-16/32 MQL/MVL/MVLI/MBL October 2007 4 M9999-102207-1.9 Content Pin Configuration for KSZ8842-16 Switches (8/16-Bit) ...................................................................................... 11 Ball Configuration for KSZ8842-16 Switches (8/16-Bit) ..................................................................................... 12 Pin Description for KSZ8842-16 Switches (8/16-Bit) .......................................................................................... 13 Ball Description for KSZ8842-16 Switches (8/16-Bit) ......................................................................................... 18 Pin Configuration for KSZ8842-32 Switches (32-Bit).......................................................................................... 22 Pin Description for KSZ8842-32 Switches (32-Bit) ............................................................................................. 23 Functional Description .......................................................................................................................................... 28 Functional Overview: Physical Layer Transceiver ............................................................................................. 28 100BASE-TX Transmit ..........................................................................................................................................................28 100BASE-TX Receive ...........................................................................................................................................................28 Scrambler/De-scrambler (100BASE-TX only)........................................................................................................................28 10BASE-T Transmit...............................................................................................................................................................28 10BASE-T Receive................................................................................................................................................................28 Power Management...............................................................................................................................................................29 MDI/MDI-X Auto Crossover ...................................................................................................................................................29 Straight Cable ...................................................................................................................................................................29 Crossover Cable ...............................................................................................................................................................30 Auto Negotiation ....................................................................................................................................................................30 LinkMD Cable Diagnostics.....................................................................................................................................................31 Access ..............................................................................................................................................................................31 Usage ...............................................................................................................................................................................32 Functional Overview: MAC and Switch ............................................................................................................... 32 Address Lookup.....................................................................................................................................................................32 Learning.................................................................................................................................................................................32 Migration................................................................................................................................................................................32 Aging .....................................................................................................................................................................................32 Forwarding.............................................................................................................................................................................33 Switching Engine ...................................................................................................................................................................35 MAC Operation......................................................................................................................................................................35 Inter Packet Gap (IPG) ..........................................................................................................................................................35 Back-Off Algorithm.................................................................................................................................................................35 Late Collision .........................................................................................................................................................................35 Legal Packet Size ..................................................................................................................................................................35 Flow Control ..........................................................................................................................................................................35 Half-Duplex Backpressure .....................................................................................................................................................35 Broadcast Storm Protection...................................................................................................................................................36 Repeater Mode ......................................................................................................................................................................36 Clock Generator ....................................................................................................................................................................36 Bus Interface Unit (BIU)......................................................................................................................................... 36 Asynchronous Interface .........................................................................................................................................................38 Synchronous Interface...........................................................................................................................................................39 Summary ...............................................................................................................................................................................39 BIU Implementation Principles...............................................................................................................................................41 Queue Management Unit (QMU) ........................................................................................................................... 41 Transmit Queue (TXQ) Frame Format...................................................................................................................................41 Receive Queue (RXQ) Frame Format ...................................................................................................................................42 Advanced Switch Functions ................................................................................................................................. 44 Spanning Tree Support..........................................................................................................................................................44 IGMP Support........................................................................................................................................................................45 “IGMP” Snooping ..............................................................................................................................................................45 |
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