W83627EHF Datasheet, PDF (38/141 Pages) Winbond – evolving product from Winbonds most popular I/O family

W83627EHF/EF, W83627EHG/EG
Figure 6.6 PWM fan mode and Figure 6.7 DC fan mode illustrate the Thermal Cruise mode
Figure 6.6
Figure 6.7
y One more protection is provided that Fan output will not be decreased to 0 in the above (3)
situation in order to keep the fans running with a minimum speed. By setting Bank0
Index12h.bit3~5 to 1, Fan output will be decreased to the “Stop Output Value” which are
defined at Bank0 Index08h, Index09h and Index17h.
6.5.2 Fan Speed Cruise mode
There are 4 pairs of Fan input/Fan output control at this mode: SYSFANIN with SYSFANOUT,
CPUFANIN0 with CPUFANOUT0, AUXFANIN with AUXFANOUT and CPUFANIN1 with
CPUFANOUT1. At this mode, W83627EHF/EHG provides the Smart Fan system which can control
the fan speed automatically depend on current fan speed to keep it with in a specific range. A wanted
fan speed count and interval must be set (ex. 160 ± 10 ) by BIOS. As long as the fan speed count is
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