W83627EHF Datasheet, PDF (44/141 Pages) Winbond – evolving product from Winbonds most popular I/O family

W83627EHF/EF, W83627EHG/EG
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
ATTRIBUTE
BIT DATA
CPUTIN Temperature
Sensor
SYSTIN Temperature
Sensor
AUXTIN Temperature
Sensor
Read only
Read only
Read only
8 MSB, 1°C bit 7,
0.5 °C
8 MSB, 1°C
8 MSB, 1°C bit 7,
0.5 °C
CPUFANOUT0 Output
Value Select
FFh
Bit7-0
CPUFANOUT Value
SYSFANOUT Output
Value Select
FFh
Bit7-0 SYSFANOUT
Value
Table 6.4-2 Relative Register-at Smart Fan III control mode
SMART-FAN III
MODE
TARGET
TEMPERATU
RE
TOLERANCE
STOP
VALUE
(MIN. FAN
OUTPUT)
CPUFANOUT0
CR[06h]
CR[07h] bit 4-
7
CR[09h]
CPUFANOUT1
CR[63h]
CR[62h] bit 0-
3
CR[64h]
Smart-Fan III Mode Output Step
Step Down
Time
Step Up
Time
CPUFANOUT0
CR[68h]
CR[0Eh]
CR[0Fh]
CPUFANOUT1
CR[6Ah]
CR[0Eh]
CR[0Fh]
MAX. FAN
OUTPUT
CR[67h]
CR[69h]
Keep Min. Fan
Output value
CR[12h] bit 4
CR[12h] bit 6
STOP
TIME
CR[0Dh]
CR[66h]
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