w83627thg Winbond Electronics Corp America, w83627thg Datasheet - Page 37
w83627thg
Manufacturer Part Number
w83627thg
Description
Winbond Lpc I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83627THG.pdf
(142 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
W83627THG
Manufacturer:
WINBOND/华邦
Quantity:
20 000
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One more protection is provided that DC FAN output voltage will not be decreased to 0 in the above
(3) situation in order to keep the fans running with a minimum speed. By setting CR[12h] bit3-5 to 1,
FAN output voltage will be decreased to the “ Stop Value ” which are defined at CR[08h],CR[09h] and
CR[15h].
5.5.2
There are 3 pairs of FANIN/FANOUT control at this mode: SYSFANIN with SYSFANOUT, CPUFANIN
with CPUFANOUT, AUXFANIN with AUXFANOUT. At this mode, W83627THF provides the Smart
Fan system which can control the fan speed automatically depend on current fan speeds 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, output voltage will keep the current value. If
current fan speed count is higher than the high limit (ex. 160+10), output voltage 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), output voltage will be decreased to keep the count higher than the low limit. See Figure 5-11
example.
Target Temperature
Fan Speed Cruise mode
Tolerance
Tolerance
DC
Output
Voltage
Count
170
160
150
DC
Output
Voltage
2.5
5
0
58`C
55`C
52`C
2.5
5
A
0
Fan Start = 1.875V
A
Figure 5-10
Figure 5-11
- 30 -
C
W83627THF/W83627THG
Fan Stop = 1.25V
B
C
Fan Start = 1.875V
D
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