Datasheet

Micrel, Inc. KS8995MA/FQ
October 2011 4 M9999-102611-3.0
Contents
System Level Applications ................................................................................................................................................. 11
Pin Configuration ................................................................................................................................................................ 13
Pin Description − By Number ............................................................................................................................................. 14
Pin Description − By Name ................................................................................................................................................ 20
Introduction ......................................................................................................................................................................... 26
Functional Overview: Physical Layer Transceiver .......................................................................................................... 26
100BASE-TX Transmit ..................................................................................................................................................... 26
100BASE-TX Receive ...................................................................................................................................................... 26
PLL Clock Synthesizer ...................................................................................................................................................... 26
Scrambler/De-Scrambler (100BASE-TX Only) ................................................................................................................. 27
100BASE-FX Operation .................................................................................................................................................... 27
100BASE-FX Signal Detection ......................................................................................................................................... 27
100BASE-FX Far End fault ............................................................................................................................................... 27
10BASE-T Transmit .......................................................................................................................................................... 27
10BASE-T Receive ........................................................................................................................................................... 27
Power Management .......................................................................................................................................................... 27
MDI/MDI-X Auto Crossover .............................................................................................................................................. 27
Auto-Negotiation ............................................................................................................................................................... 28
Functional Overview: Switch Core .................................................................................................................................... 29
Address Look-Up .............................................................................................................................................................. 29
Learning ............................................................................................................................................................................ 29
Migration ........................................................................................................................................................................... 29
Aging ................................................................................................................................................................................. 29
Forwarding ........................................................................................................................................................................ 29
Switching Engine .............................................................................................................................................................. 29
Media Access Controller (MAC) Operation ...................................................................................................................... 30
MII Interface Operation ..................................................................................................................................................... 33
SNI Interface Operation .................................................................................................................................................... 36
Advanced Functionality ...................................................................................................................................................... 36
Spanning Tree Support ..................................................................................................................................................... 36
Special Tagging Mode ...................................................................................................................................................... 37
IGMP Support ................................................................................................................................................................... 39
Port Mirroring Support ...................................................................................................................................................... 39
VLAN Support ................................................................................................................................................................... 40
Rate Limit Support ............................................................................................................................................................ 40