Micrel, Inc.
KSZ9021RL/RN
Power Saving Mode.......................................................................................................................................................... 33
Software Power Down Mode ............................................................................................................................................ 33
Chip Power Down Mode ................................................................................................................................................... 33
Register Map........................................................................................................................................................................
33
Register Description
........................................................................................................................................................... 34
IEEE Defined Registers .................................................................................................................................................... 34
Vendor Specific Registers ................................................................................................................................................ 41
Extended Registers .......................................................................................................................................................... 44
Absolute Maximum Ratings
............................................................................................................................................... 46
Operating Ratings
............................................................................................................................................................... 46
Electrical Characteristic
..................................................................................................................................................... 46
Timing Diagrams
................................................................................................................................................................. 48
RGMII Timing.................................................................................................................................................................... 48
Auto-Negotiation Timing ................................................................................................................................................... 49
MDC/MDIO Timing ........................................................................................................................................................... 50
Reset Timing..................................................................................................................................................................... 51
Reset Circuit
........................................................................................................................................................................ 51
Reference Circuits – LED Strap-in Pins............................................................................................................................
52
Reference Clock – Connection and Selection..................................................................................................................
53
Magnetics Specification
..................................................................................................................................................... 53
Package Information...........................................................................................................................................................
54
October 2009
5
M9999-101309-1.1
MICREL [ MICREL SEMICONDUCTOR ]
