F81867 Datasheet, PDF (259/315 Pages) Feature Integration Technology Inc. – 6 UARTs μSuper IO With 128 Bytes FIFO and Power Saving Functions

FAN3_PWM_
6
R/W 5VSB
FREQ_SEL
5 FAN3_UP_T_EN R/W 5VSB
FAN3_
4
R/W 5VSB
INTERPOLATION_EN
FAN3_JUMP_
3
R/W 5VSB
HIGH_EN
FAN3_JUMP_
2
R/W 5VSB
LOW_EN
1-0 FAN3_TEMP_SEL R/W 5VSB
F81867
This bit and FREQ_SEL_ADD3 are used to select FAN3 PWM
frequency. NEW_FREQ_SEL3 = { FREQ_SEL_ADD3,
FAN3_PWM_FREQ_SEL}
0 00: 23.5 KHz
01: 11.75 KHz
10: 5.875 KHz
11: 220 Hz
Set 1 to force FAN3 to full speed if any temperature over its high
0
limit.
1 Set 1 will enable the interpolation of the fan expect table.
This register controls the FAN3 duty movement when
temperature over highest boundary.
0: The FAN3 duty will increases with the slope selected by
1 FAN3_RATE_SEL register.
1: The FAN3 duty will directly jumps to the value of
SEC1SPEED3 register.
This bit only activates in duty mode.
This register controls the FAN3 duty movement when
temperature under (highest boundary – hysteresis).
0: The FAN3 duty will decreases with the slope selected by
1 FAN3_RATE_SEL register.
1: The FAN3 duty will directly jumps to the value of
SEC2SPEED3 register.
This bit only activates in duty mode.
This registers companying with FAN3_TEMP_SEL_DIG select
the temperature source for controlling FAN3. The following value
is comprised by {FAN3_TEMP_SEL_DIG, FAN3_TEMP_SEL}
000: fan3 follows PECI temperature (CR7Eh)
001: fan3 follows temperature 1 (CR72h).
010: fan3 follows temperature 2 (CR74h).
11
011: fan3 follows temperature 0 (CR70h).
100: fan3 follows IBEX/TSI CPU temperature (CR7Ah)
101: fan3 follows IBEX PCH temperature (CR7Bh).
110: fan3 follows IBEX MCH temperature (CR7Ch).
111: fan3 follows IBEX maximum temperature (CR7Dh).
Otherwise: reserved.
259
Dec, 2011
V0.12P