W83627EHF Datasheet, PDF (39/141 Pages) Winbond – evolving product from Winbonds most popular I/O family

W83627EHF/EF, W83627EHG/EG
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
C
170
160
150
(%)
Fan
100
output
50
0
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
Table 6.3-1 Display Register- at Smart Fan I Mode
DESCRIPTION
REGISTER
ADDRESS
REGISTER NAME
Current CPU
Temperature
Bank1
50H ,51H
CPUTIN Temperature
Sensor
Current SYS
Temperature
Bank 0
27H
SYSTIN Temperature
Sensor
Current AUX
Temperature
Bank2
50H,51H
AUXTIN Temperature
Sensor
Current
CPUFANOUT0
Output Value
Bank0
03H
CPUFANOUT0 Output
Value Select
Current
SYSFANOUT
Output Value
Bank0
01H
SYSFANOUT Output
Value Select
ATTRIBUTE
Read only
Read only
Read only
FFh
FFh
BIT DATA
8 MSB, 1°C bit 7,
0.5 °C
8 MSB, 1°C
8 MSB, 1°C bit 7,
0.5 °C
Bit7-0
CPUFANOUT Value
Bit7-0 SYSFANOUT
Value
Publication Release Date: January 18, 2006
-33-
Revision 1.0