Micrel, Inc.
KSZ8041TL/FTL
April 2007
5
M9999-042707-1.1
Power Management.......................................................................................................................................................... 29
Power Saving Mode.................................................................................................................................................... 29
Power Down Mode...................................................................................................................................................... 29
Reference Clock Connection Options .............................................................................................................................. 30
Reference Circuit for Power and Ground Connections .................................................................................................... 31
100Base-FX Fiber Operation (KSZ8041FTL only) ........................................................................................................... 32
Fiber Signal Detect ..................................................................................................................................................... 32
Far-End Fault............................................................................................................................................................... 32
Back-to-Back Media Converter......................................................................................................................................... 33
MII Back-to-Back Mode .............................................................................................................................................. 33
RMII Back-to-Back Mode............................................................................................................................................ 34
Register Map........................................................................................................................................................................ 35
Register Description ........................................................................................................................................................... 35
Absolute Maximum Ratings
(1) ............................................................................................................................................ 43
Operating Ratings
(2) ............................................................................................................................................................ 43
Electrical Characteristics
(3) ................................................................................................................................................ 43
Timing Diagrams ................................................................................................................................................................. 45
MII SQE Timing (10Base-T) ............................................................................................................................................. 45
MII Transmit Timing (10Base-T) ....................................................................................................................................... 46
MII Receive Timing (10Base-T) ........................................................................................................................................ 47
MII Transmit Timing (100Base-TX) .................................................................................................................................. 48
MII Receive Timing (100Base-TX) ................................................................................................................................... 49
RMII Timing....................................................................................................................................................................... 50
Auto-Negotiation Timing ................................................................................................................................................... 51
MDC/MDIO Timing ........................................................................................................................................................... 52
Reset Timing..................................................................................................................................................................... 53
Reset Circuit ........................................................................................................................................................................ 54
Selection of Isolation Transformer.................................................................................................................................... 56
Selection of Reference Crystal .......................................................................................................................................... 56
Package Information........................................................................................................................................................... 57