4-Wire Pulse Width Modulation (PWM) Controlled Fans Specification

5
Revision History
Revision
Number
Description Revision
Date
1.0 Initial Release Nov 2003
1.1 Corrected Tachometer input signal, added definitions to operating modes Dec 2003
1.2 Corrected Section 2.4 PWM input parameter July 2004
1.3 Clarified & Expanded requirements on PWM for Hardware Monitor
Devices
Sept 2005
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