Micrel, Inc.
KSZ9021RL/RN
Revision History
Revision
1.0
1.1
Date
1/16/09
10/13/09
Summary of Changes
Data sheet created.
Updated current consumption in Electrical Characteristics section.
Corrected data sheet omission of register 1 bit 8 for 1000Base-T Extended Status information.
Added the following register bits to provide further power saving during software power down: Tri-
state all digital I/Os (reg. 258.7), LDO disable (reg. 263.15), Low frequency oscillator mode (reg.
263.8).
Added KSZ9021RN device and updated entire data sheet accordingly.
Added 48-Pin QFN package information.
October 2009
3
M9999-101309-1.1