Advanced Functionality ................................................................................................................................................. 46
QoS Priorit y Support ................................................................................................................................................. 46
Port-Bas ed Priority ................................................................................................................................................. 46
802.1p-Bas ed Priority ............................................................................................................................................ 46
DiffServ-Based Priority ........................................................................................................................................... 47
Spanning Tree Support ............................................................................................................................................. 47
Rapid Spanning Tree Support ................................................................................................................................... 48
Tail Tagging Mode ..................................................................................................................................................... 49
IGMP Support ............................................................................................................................................................ 50
IGMP Snoop ing ...................................................................................................................................................... 50
IGMP Send Back to the Subsc r ibed Port ............................................................................................................... 50
Port Mirroring Support ............................................................................................................................................... 50
“Receive Only” Mirror on a Port ............................................................................................................................. 50
“Transmit Only” Mirror on a Port ............................................................................................................................ 50
“Receive and Transmit” Mirror on Two Ports ......................................................................................................... 50
VLAN Support ........................................................................................................................................................... 50
Rate Limiting Support ................................................................................................................................................ 51
Ingress Rate Limit .................................................................................................................................................. 51
Egress Rate Limit ................................................................................................................................................... 52
Transmit Queue Ratio Programming ..................................................................................................................... 52
Filtering for Self-Address, Unknown Unicast/Multicast Address and Unknown VID Packet/IP Multicast ................. 52
Configuration Interface .................................................................................................................................................. 53
I2C Master Serial Bus Configuration .......................................................................................................................... 53
SPI Slave Serial Bus Conf i gurat ion ....................................................................................................................... 54
MII Management Interface (MIIM) ......................................................................................................................... 56
Serial Management Interface (SMI) ....................................................................................................................... 57
Register Descriptions .................................................................................................................................................... 58
Global Registers ........................................................................................................................................................ 59
Port Registers ............................................................................................................................................................ 69
Advanced Control Registers...................................................................................................................................... 79
Data Rate Limit Selection Limit Table ....................................................................................................................... 94
Static MAC Address Table ............................................................................................................................................ 95
Dynamic MAC Address Table ..................................................................................................................................... 100
MIB (Management Information Base) Counters ......................................................................................................... 102
For Port 1................................................................................................................................................................. 102
For Port 2................................................................................................................................................................. 103
For Port 3................................................................................................................................................................. 103
For Port 4................................................................................................................................................................. 103
For Port 5................................................................................................................................................................. 103
MIIM Registers ............................................................................................................................................................ 106
Absolute Maximum Ratings ........................................................................................................................................ 110
Operating Ratings ....................................................................................................................................................... 110
Electrical Characteristics ............................................................................................................................................. 110
Timing Diagrams ......................................................................................................................................................... 113
EEPROM Timing ..................................................................................................................................................... 113
SNI Timing ............................................................................................................................................................... 114
MII Timing ................................................................................................................................................................ 115
SPI Timing ............................................................................................................................................................... 118
Auto-Negotiation Timing .......................................................................................................................................... 120
MDC/MDIO Timing .................................................................................................................................................. 121
Reset Timing ........................................................................................................................................................... 122
Reset Circuit Diagram ............................................................................................................................................. 123
Selection of Isolation Transformer .............................................................................................................................. 124
Selection of Reference Crystal .................................................................................................................................... 124
Package Information and Recommended Landing Pattern ........................................................................................ 125
December 9, 2014 6 Revision 1.2