Add a note for VLAN table write, improve the timing diagram for MII interface, update pin description for
PCRS, PCOL, etc. And update the description of the register bits for the loopback, etc.
Add the package thermal information in the operating rating and the transformer power consumption
information in the electrical characteristics note.
Add KSZ8995FQ information and pin description.
Add KSZ8995FQ block diagram and descriptions for revision ID and LED mode.
Update some descriptions for VDDAT voltage MDI/MDIX bits of registers, update equation of the broadcast
storm protection, correct typo.
October 2011
3
M9999-102611-3.0
Micrel, Inc.
KS8995MA/FQ
Contents
System Level Applications................................................................................................................................................. 11
By Number............................................................................................................................................. 14
Pin Description
−
By Name ................................................................................................................................................ 20
100BASE-FX Signal Detection ......................................................................................................................................... 27
100BASE-FX Far End fault ............................................................................................................................................... 27
Power Management .......................................................................................................................................................... 27
MDI/MDI-X Auto Crossover .............................................................................................................................................. 27
Media Access Controller (MAC) Operation ...................................................................................................................... 30
MII Interface Operation ..................................................................................................................................................... 33
Spanning Tree Support ..................................................................................................................................................... 36
Special Tagging Mode ...................................................................................................................................................... 37
IGMP Support ................................................................................................................................................................... 39
Port Mirroring Support ...................................................................................................................................................... 39
VLAN Support ................................................................................................................................................................... 40
Rate Limit Support ............................................................................................................................................................ 40
Global Registers .................................................................................................................................................................. 47
Register 2 (0x02): Global Control 0 .................................................................................................................................. 47
Register 4 (0x04): Global Control 2 .................................................................................................................................. 49
Register 5 (0x05): Global Control 3 .................................................................................................................................. 50
Register 6 (0x07): Global Control 4 .................................................................................................................................. 51
Register 7 (0x07): Global Control 5 .................................................................................................................................. 51
Register 8 (0x08): Global Control 6 .................................................................................................................................. 51
Register 9 (0x09): Global Control 7 .................................................................................................................................. 51
Register 10 (0x0A): Global Control 8 ................................................................................................................................ 52
Register 11 (0x0B): Global Control 9 ................................................................................................................................ 52
Port Registers ...................................................................................................................................................................... 53
Register 16 (0x10): Port 1 Control 0 ................................................................................................................................. 53
Register 32 (0x20): Port 2 Control 0 ................................................................................................................................. 53
Register 48 (0x30): Port 3 Control 0 ................................................................................................................................. 53
Register 64 (0x40): Port 4 Control 0 ................................................................................................................................. 53
Register 80 (0x50): Port 5 Control 0 ................................................................................................................................. 53
Register 17 (0x11): Port 1 Control 1 ................................................................................................................................. 54
Register 33 (0x21): Port 2 Control 1 ................................................................................................................................. 54
Register 49 (0x31): Port 3 Control 1 ................................................................................................................................. 54
Register 65 (0x41): Port 4 Control 1 ................................................................................................................................. 54
Register 81 (0x51): Port 5 Control 1 ................................................................................................................................. 54
Register 18 (0x12): Port 1 Control 2 ................................................................................................................................. 54
Register 34 (0x22): Port 2 Control 2 ................................................................................................................................. 54
Register 50 (0x32): Port 3 Control 2 ................................................................................................................................. 54
Register 66 (0x42): Port 4 Control 2 ................................................................................................................................. 54
Register 82 (0x52): Port 5 Control 2 ................................................................................................................................. 54
Register 19 (0x13): Port 1 Control 3 ................................................................................................................................. 55
Register 35 (0x23): Port 2 Control 3 ................................................................................................................................. 55
Register 51 (0x33): Port 3 Control 3 ................................................................................................................................. 55
Register 67 (0x43): Port 4 Control 3 ................................................................................................................................. 55
Register 83 (0x53): Port 5 Control 3 ................................................................................................................................. 55
Register 20 (0x14): Port 1 Control 4 ................................................................................................................................. 55
Register 36 (0x24): Port 2 Control 4 ................................................................................................................................. 55
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