6 Revision 1.0
Contents
List of Figures ........................................................................................................................................................................ 15
List of Tables ......................................................................................................................................................................... 16
Acronyms .............................................................................................................................................................................. 17
Pin Configuration ................................................................................................................................................................... 20
Pin Description ...................................................................................................................................................................... 21
Strapping Options ................................................................................................................................................................. 27
Functional Description ........................................................................................................................................................... 28
Physical (PHY) Block ............................................................................................................................................................ 28
100BASE-TX Transmit ...................................................................................................................................................... 28
100BASE-TX Receive ....................................................................................................................................................... 28
Scrambler/De-Scrambler (100BASE-TX Only) .................................................................................................................. 28
PLL Clock Synthesizer (Recovery) .................................................................................................................................... 28
100BASE-FX Operation .................................................................................................................................................... 29
100BASE-FX Signal Detection .......................................................................................................................................... 29
100BASE-FX Far-End Fault .............................................................................................................................................. 29
10BASE-T Transmit ........................................................................................................................................................... 29
10BASE-T Receive ............................................................................................................................................................ 29
MDI/MDI-X Auto Crossover ............................................................................................................................................... 30
Straight Cab le .................................................................................................................................................................... 30
Crossover Cable ................................................................................................................................................................ 31
Auto-Negotiation ................................................................................................................................................................ 31
LinkMD® Cable Diagnos tic s ............................................................................................................................................... 32
Access............................................................................................................................................................................ 32
Usage ............................................................................................................................................................................. 32
On-Chip Termination Resistors ......................................................................................................................................... 33
Loopback Support ............................................................................................................................................................. 33
Far-End Loopbac k ......................................................................................................................................................... 33
Near-End (Remote) Loopback ....................................................................................................................................... 33
MAC (Media Access Controller) Block .................................................................................................................................. 35
MAC Operation .................................................................................................................................................................. 35
Address Lookup ................................................................................................................................................................. 35
Learning ............................................................................................................................................................................. 35
Migration ............................................................................................................................................................................ 35
Aging .................................................................................................................................................................................. 35
Forwarding ......................................................................................................................................................................... 35
Inter-Packet Gap (IPG) ...................................................................................................................................................... 37
Back-Off Algorithm ............................................................................................................................................................ 37
Late Collis ion ..................................................................................................................................................................... 37
Legal Packet Size .............................................................................................................................................................. 37
Flow Control....................................................................................................................................................................... 38
Half-Duplex Backpressure ................................................................................................................................................. 38
Broadcast Storm Protection ............................................................................................................................................... 39
Port Individual MAC Address and Source Port Filtering ................................................................................................... 39
Switch Block .......................................................................................................................................................................... 40
Switching Engine ............................................................................................................................................................... 40
Spanning Tree Support ..................................................................................................................................................... 40
Rapid Spanning Tree Support ........................................................................................................................................... 41
Discarding State ............................................................................................................................................................. 41
Learning State ................................................................................................................................................................ 41
Forwardi ng Stat e ............................................................................................................................................................ 41
Tail Tagging Mode ............................................................................................................................................................. 41
IGMP Support .................................................................................................................................................................... 42
“IGMP” Snooping ........................................................................................................................................................... 42
“Multicast Address Insertion” in the Static MAC Table .................................................................................................. 42
IPv6 MLD Snooping ........................................................................................................................................................... 42
Port Mirroring Support ....................................................................................................................................................... 43