F81867 Datasheet, PDF (250/315 Pages) Feature Integration Technology Inc. – 6 UARTs μSuper IO With 128 Bytes FIFO and Power Saving Functions

F81867
FAN1 Temperature Mapping Select – Offset AFh
Bit
Name
R/W Reset Default
Description
FAN1_TEMP
This bit companies with FAN1_TEMP_SEL select the
7
R/W 5VSB
0
_SEL_DIG
temperature source for controlling FAN1.
This bit and FREQ_SEL_ADD1 are used to select FAN1 PWM
frequency. NEW_FREQ_SEL1 = { FREQ_SEL_ADD1,
FAN1_PWM_FREQ_SEL}
FAN1_PWM
6
R/W 5VSB
0 00: 23.5 KHz
_FREQ_SEL
01: 11.75 KHz
10: 5.875 KHz
11: 220 Hz
5 FAN1_UP_T_EN R/W 5VSB
Set 1 to force FAN1 to full speed if any temperature over its high
0
limit.
FAN1_
4 INTERPOLATION_ R/W 5VSB
1 Set 1 will enable the interpolation of the fan expect table.
EN
This register controls the FAN1 duty movement when
temperature over highest boundary.
0: The FAN1 duty will increases with the slope selected by
FAN1_JUMP
3
R/W 5VSB
1 FAN1_RATE_SEL register.
_HIGH_EN
1: The FAN1 duty will directly jumps to the value of
SEC1SPEED1 register.
This bit only activates in duty mode.
This register controls the FAN1 duty movement when
temperature under (highest boundary – hysteresis).
0: The FAN1 duty will decreases with the slope selected by
FAN1_JUMP
2
R/W 5VSB
1 FAN1_RATE_SEL register.
_LOW_EN
1: The FAN1 duty will directly jumps to the value of
SEC2SPEED1 register.
This bit only activates in duty mode.
250
Dec, 2011
V0.12P