w83627ef Winbond Electronics Corp America, w83627ef Datasheet - Page 38
w83627ef
Manufacturer Part Number
w83627ef
Description
Lpc Super I/o For Desktop & Server
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83627EF.pdf
(144 pages)
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6.5.2
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
the specific range, Fan output will keep the current value. If current fan speed count is higher than the
high limit (ex. 160+10), Fan output will be increased to keep the count less than the high limit.
Otherwise, if current fan speed is less than the low limit(ex. 160-10), Fan output will be decreased to
keep the count higher than the low limit. See Figure 6.8 example.
6.5.3
Smart Fan control system can be disabled and the fan speed control algorithm can be programmed by
BIOS or application software. The programming method must be set fan configuration at bank 0 index
04h,bit5-4 to 1,index 62h bit5~4 to 1. Then table 6.3-1 displayed current temperature and fan output
value at Smart Fan I Mode Besides, these tables 6.3-2 and 6.3-3 used to setting thermal mode or
speed cruise mode of Smart Fan I mode
There are 4 pairs of Fan input/Fan output control at this mode: SYSFANIN with SYSFANOUT,
Fan Speed Cruise mode
Manual Control Mode
Count
Fan
output
170
160
150
(%)
100
50
0
A
W83627EHF/EF, W83627EHG/EG
Figure 6.8
- 32 -
C
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