Specifications
Micrel, Inc.
KSZ8895MQ/RQ/FMQ
Port 5 PHY 5 P5-MII/RMII Interface ............................................................................................................................ 38
Port 5 MAC 5 SW5-MII Interface for the KSZ8895MQ/FMQ ...................................................................................... 39
Port 5 MAC 5 Switch SW5-RMII Interface for the KSZ8895RQ ................................................................................. 40
SNI Interface Operation .............................................................................................................................................. 41
Advanced Functionality ................................................................................................................................................ 42
QoS Priority Support ................................................................................................................................................... 42
Port-Based Priority .................................................................................................................................................. 42
802.1p-Based Priority ............................................................................................................................................. 42
DiffServ-Based Priority ........................................................................................................................................... 43
Spanning Tree Support ............................................................................................................................................... 43
Rapid Spanning Tree Support .................................................................................................................................... 44
Tail Tagging Mode ...................................................................................................................................................... 45
IGMP Support ............................................................................................................................................................. 46
Port Mirroring Support ................................................................................................................................................ 46
VLAN Support ............................................................................................................................................................. 46
Rate Limiting Support ................................................................................................................................................. 47
Ingress Rate Limit ................................................................................................................................................... 47
Egress Rate Limit ................................................................................................................................................... 48
Transmit Queue Ratio Programming ...................................................................................................................... 48
Filtering for Self-Address, Unknown Unicast/Multicast Address and Unknown VID Packet/IP Multicast .................. 48
Configuration Interface ............................................................................................................................................... 48
I
2
C Master Serial Bus Configuration ....................................................................................................................... 48
SPI Slave Serial Bus Configuration ........................................................................................................................ 49
MII Management Interface (MIIM) .......................................................................................................................... 52
Serial Management Interface (SMI) ........................................................................................................................ 52
Register Description ..................................................................................................................................................... 54
Global Registers ......................................................................................................................................................... 56
Register 0 (0x00): Chip ID0 .................................................................................................................................... 56
Register 1 (0x01): Chip ID1 / Start Switch .............................................................................................................. 56
Register 2 (0x02): Global Control 0 ........................................................................................................................ 56
Register 3 (0x03): Global Control 1 ........................................................................................................................ 57
Register 4 (0x04): Global Control 2 ........................................................................................................................ 58
Register 5 (0x05): Global Control 3 ........................................................................................................................ 59
Register 6 (0x06): Global Control 4 ........................................................................................................................ 60
Register 7 (0x07): Global Control 5 ........................................................................................................................ 61
Register 8 (0x08): Global Control 6 ........................................................................................................................ 61
Register 9 (0x09): Global Control 7 ........................................................................................................................ 61
Register 10 (0x0A): Global Control 8 ...................................................................................................................... 62
Register 11 (0x0B): Global Control 9 ...................................................................................................................... 62
Register 12 (0x0C): Global Control 10 ................................................................................................................... 63
Register 13 (0x0D): Global Control 11 ................................................................................................................... 63
Register 14 (0x0E): Power Down Management Control 1 ..................................................................................... 63
Register 15 (0x0F): Power Down Management Control 2...................................................................................... 64
March 12, 2014
5
Revision 1.7