W83627EHF データシートの表示（PDF） - Winbond

部品番号

コンポーネント説明

メーカー

W83627EHF

(W83627EHF / W83627EHG) LPC I/O

Winbond 

W83627EHF/EF, W83627EHG/EG

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

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.

A

Count

170

160

150

(%)

Fan

100

output

50

0

C

Figure 6.8

6.5.3 Manual Control Mode

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

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