W83627EHF_0611 Datasheet, PDF (43/144 Pages) Winbond – WINBOND LPC I/O

W83627EHF/EF, W83627EHG/EG
Current Temp. < Target Temp. - Tol.
Fan output
(DC / PWM)
Tolerance
Max. Fan Output
Fan Initial
Output Value
Step
Min. Fan Output
Speed-down Slope
(Initial Value – Min. Fan output)
=
Step
= Integer
Tar 2
Tar
Tar 3
Tar 1
Figure 6.11
Temperature
6.5.4 Smart Fan III Mode
Smart Fan III 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,index 12h bit2~1 index 62h bit5~4.Before enabling Smart Fan III mode ,you have to
set relative registers as table 6.4-2. In addition to the required registers, the device has a the following
registers that further configure and enable the fan speed control functionality .Then Table 6.4-1
displayed current temperature and fan output value at Smart Fan III mode , Besides, the table 6.4-2
used to setting at Smart Fan III mode
Table 6.4-1 Display Register- at Smart Fan III Mode
DESCRIPTION
Current CPU
Temperature
Current SYS
Temperature
Current AUX
Temperature
Current
CPUFANOUT0
Output Value
Current
SYSFANOUT
Output Value
REGISTER
ADDRESS
Bank1
50H ,51H
Bank 0
27H
Bank2
50H,51H
Bank0
03H
Bank0
01H
REGISTER NAME
CPUTIN Temperature
Sensor
SYSTIN Temperature
Sensor
AUXTIN Temperature
Sensor
CPUFANOUT0 Output
Value Select
ATTRIBUTE
Read only
Read only
Read only
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
SYSFANOUT Output
Value Select
FFh
Bit7-0 SYSFANOUT
Value
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Publication Release Date: Nov. 2006
Revision 1.3