f75334 Feature Integration Technology Inc., f75334 Datasheet - Page 41

• Manufacturer Part Number: f75334
• Description: Performance Controller
• Manufacturer: Feature Integration Technology Inc.

5-4
3-2
1-0
7-6
5-4
3-2
1-0
7-4
3-0
Bit
Bit
S: Register default values are decided by trapping.
8.2.30 Fan mode Select Register -- Index 96h
8.2.31 Auto Fan1 and Fan2 Boundary Hystersis Select Register -- Index 98h
FAN3_TYPE
FAN2_TYPE
FAN1_TYPE
Reserved
FAN3_MODE
FAN2_MODE
FAN1_MODE
FAN2_HYS
FAN1_HYS
Name
Name
R/W
R/W
R/W
R/W Default
R/W
R/W
R/W
R/W
R/W Default
R/W
R/W
2’b 0S
2’b 0S
2’b 0S
1h
1h
1h
1h
4h
4h
00: Output PWM mode (pushpull) to control fans.
01: Use linear fan application circuit to control fan speed by fan’s power
terminal .
10: Output PWM mode (open drain) to control Intel 4-wire fans.
11: Reserved.
00: Output PWM mode (pushpull) to control fans.
01: Use linear fan application circuit to control fan speed by fan’s power
terminal .
10: Output PWM mode (open drain) to control Intel 4-wire fans.
11: Reserved.
00: Output PWM mode (push pull) to control fans.
01: Use linear fan application circuit to control fan speed by fan’s power
terminal .
10: Output PWM mode (open drain) to control Intel 4-wire fans.
11: Reserved.
Reserved
00: Auto fan speed control, fan speed will follow different temperature by
different RPM that define in 0xC6-0xCE.
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle that define in 0xC6-0xCE.
10: Manual mode fan control, user can write expect RPM count to
0xC2-0xC3, and F75334 will auto control duty cycle (PWM fan type) or
voltage (linear fan type) to control fan speed.
11: Reserved
00: Auto fan speed control, fan speed will follow different temperature by
different RPM that define in 0xB6-0xBE.
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle (voltage) that define in 0xB6-0xBE.
10: Manual mode fan control, user can write expect RPM count to
0xB2-0xB3, and F75334 will auto control duty cycle (PWM fan type) or
voltage (linear fan type) to control fan speed.
11: Reserved
00: Auto fan speed control, fan speed will follow different temperature by
different RPM that define in 0xA6-0xAE.
01: Auto fan speed control, fan speed will follow different temperature by
different duty cycle that define in 0xA6-0xAE.
10: Manual mode fan control, user can write expect RPM count to
0xA2-0xA3, and F75334 will auto control duty cycle (PWM fan type) or
voltage(linear fan type) to control fan speed.
11: Reserved
0000: Boundary hysteresis. (0~15 degree C)
Segment will change when the temperature over the boundary
temperature and below the ( boundary – hysteresis ).
0000: Boundary hysteresis. (0~15 degree C)
Segment will change when the temperature over the boundary
temperature and below the ( boundary – hysteresis ).
34
Description
Description
F75334
July, 2007
V0.25P