F71862
Fan mode Select Register -- Index 96h
Bit Name R/W Default
7-6 Reserved
Description
Reserved.
R
0
00: Reserved
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle (voltage) that define in 0xB6-0xBE.
10: Reserved
11: Manual mode fan control, user can write expect duty cycle (PWM fan
type) or voltage(linear fan type) to 0xC3, and F71883FG will output this
value duty or voltage to control fan speed.
5-4
3-2
1-0
FAN3_MODE
R/W
R/W
R/W
1h
00: Reserved.
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle (voltage) that define in 0xB6-0xBE.
10: Reserved.
FAN2_MODE
FAN1_MODE
1h
1h
11: Manual mode fan control, user can write expect duty cycle (PWM fan
type) or voltage (linear fan type) to 0xB3, and F71883FG will output this
value duty or voltage to control fan speed.
00: Reserved.
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle that define in 0xA6-0xAE.
10: Reserved.
11: Manual mode fan control, user can write expect duty cycle (PWM fan
type) or voltage(linear fan type) to 0xA3, and F71883FG will output this
value duty or voltage to control fan speed.
Auto Fan1 and Fan2 Boundary Hystersis Select Register -- Index 98h
Bit
Name
R/W Default
Description
0000: Boundary hysteresis. (0~15 degree C)
4h
7-4
FAN2_HYS
R/W
Segment will change when the temperature over the boundary
temperature and below the ( boundary – hysteresis ).
0000: Boundary hysteresis. (0~15 degree C)
4h
3-0
FAN1_HYS
R/W
Segment will change when the temperature over the boundary
temperature and below the ( boundary – hysteresis ).
Auto Fan3 and Fan4 Boundary Hystersis Select Register -- Index 99h
Bit Name R/W Default
7-4 Reserved
Description
Reserved.
R
0
0000: Boundary hysteresis. (0~15 degree C)
Segment will change when the temperature over the boundary
temperature and below the ( boundary – hysteresis ).
2h
3-0
FAN3_HYS
R/W
Auto Fan3 and Fan4 Boundary Hystersis Select Register -- Index 9Bh
Bit Name R/W Default Description
Reserved.
7-6 Reserved
R
0
Fan3 duty update rate:
00: 2Hz
01: 5Hz (default)
10: 10Hz
11: 20Hz
1h
5-4 FAN3_RATE_SEL
R/W
57
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
