KSZ8842-16 Datasheet, PDF (8/126 Pages) Micrel Semiconductor – 2-Port Ethernet Switch with Non-PCI Interface

Micrel Confidential
KSZ8842-16/32 MQL/MVL
List of Figures
Figure 1. KSZ8842M Functional Diagram ..................................................................................................................................... 1
Figure 2. Standard – KSZ8842-16 MQL 128-Pin PQFP (Top View)............................................................................................ 10
Figure 3. Option – KSZ8842-16 MVL 128-Pin LQFP (Top View) ................................................................................................ 10
Figure 4. Standard – KSZ8842-32 MQL 128-Pin PQFP (Top View)............................................................................................ 16
Figure 5. Option – KSZ8842-32 MVL 128-Pin LQFP (Top View) ................................................................................................ 16
Figure 6. Typical Straight Cable Connection ............................................................................................................................... 23
Figure 7. Typical Crossover Cable Connection ........................................................................................................................... 24
Figure 8. Auto Negotiation and Parallel Operation ...................................................................................................................... 25
Figure 9. Destination Address Lookup Flow Chart in Stage One ................................................................................................ 27
Figure 10. Destination Address Resolution Flow Chart in Stage Two ......................................................................................... 28
Figure 11. Mapping from ISA-like, EISA-like, and VLBus-like transactions to the KSZ8842M Bus ............................................. 34
Figure 12. KSZ8842M 8-Bit, 16-Bit, and 32-Bit Data Bus Connections ....................................................................................... 34
Figure 13. 802.1p Priority Field Format ....................................................................................................................................... 41
Figure 14. Port 2 Far-End Loopback Path ................................................................................................................................... 44
Figure 15. Port 1 and port 2 Near-End (Remote) Loopback Path................................................................................................ 44
Figure 16. Asynchronous Cycle – ADSN = 0............................................................................................................................. 110
Figure 17. Asynchronous Cycle – Using ADSN......................................................................................................................... 111
Figure 18. Asynchronous Cycle – Using DATACSN ................................................................................................................. 112
Figure 19. Address Latching Cycle for All Modes...................................................................................................................... 113
Figure 20. Synchronous Burst Write Cycles – VLBUSN = 1...................................................................................................... 114
Figure 21. Synchronous Burst Read Cycles – VLBUSN = 1 ..................................................................................................... 115
Figure 22. Synchronous Write Cycle – VLBUSN = 0................................................................................................................. 116
Figure 23. Synchronous Read Cycle – VLBUSN = 0................................................................................................................. 117
Figure 24. EEPROM Read Cycle Timing Diagram .................................................................................................................... 118
Figure 25. Auto-Negotiation Timing........................................................................................................................................... 119
Figure 26. Reset Timing ............................................................................................................................................................ 120
Figure 27. 128-Pin PQFP Package ........................................................................................................................................... 122
Figure 28. Optional 128-Pin LQFP Package ............................................................................................................................. 123
November 2005
8
Rev. 1.4