Micrel, Inc.
KSZ8081RNA/KSZ8081RND
Register Map ......................................................................................................................................................................... 29
Register Description .............................................................................................................................................................. 30
Absolute Maximum Ratings .................................................................................................................................................. 39
Operating Ratings ................................................................................................................................................................. 39
Electrical Characteristics ....................................................................................................................................................... 39
Timing Diagrams ................................................................................................................................................................... 41
RMII Timing ......................................................................................................................................................................................... 41
Auto-Negotiation Timing ...................................................................................................................................................................... 42
MDC/MDIO Timing .............................................................................................................................................................................. 43
Power-Up/Reset Timing ...................................................................................................................................................................... 44
Reset Circuit.......................................................................................................................................................................... 45
Reference Circuits – LED Strap-In Pins................................................................................................................................ 46
Reference Clock – Connection and Selection ...................................................................................................................... 47
Magnetic – Connection and Selection .................................................................................................................................. 48
Recommended Land Pattern ................................................................................................................................................ 50
Package Information ............................................................................................................................................................. 51
February 6, 2014
5
Revision 1.1