F81867 Datasheet, PDF (244/315 Pages) Feature Integration Technology Inc. – 6 UARTs μSuper IO With 128 Bytes FIFO and Power Saving Functions

4 FREQ_SEL_ADD1 R/W 5VSB
3-2
Reserved
1-0
Reserved
R/W -
-
-
F81867
This bit and FAN1_PWM_FREQ_SEL are used to select FAN1
PWM frequency. NEW_FREQ_SEL1 = { FREQ_SEL_ADD1,
FAN1_PWM_FREQ_SEL}
0 00: 23.5 KHz
01: 11.75 KHz
10: 5.875 KHz
11: 220 Hz
0 Reserved (Keep the value of these two bits “0”)
- Reserved
Auto Fan Up Speed Update Rate Select Register⎯ Offset 9Bh
FAN_PROG_SEL = 0
Bit
Name
R/W Reset Default
Description
7-6
Reserved
-
-
- Reserved.
5-4 FAN3_UP_RATE R/W 5VSB
Fan3 duty update rate:
00: 2Hz
01 01: 5Hz (default)
10: 10Hz
11: 20Hz
3-2 FAN2_UP_RATE R/W 5VSB
Fan2 duty update rate:
00: 2Hz
01 01: 5Hz (default)
10: 10Hz
11: 20Hz
1-0 FAN1_UP_RATE R/W 5VSB
Fan1 duty update rate:
00: 2Hz
01 01: 5Hz (default)
10: 10Hz
11: 20Hz
Auto Fan Down Speed update Rate Select Register -- Offset 9Bh FAN_PROG_SEL = 1
Bit
Name
R/W Reset Default
Description
7 UP_DN_RATE_EN R/W 5VSB
0: Fan down rate disable
0
1: Fan down rate enable
6 DIRECT_LOAD_EN R/W 5VSB
0: Direct load disable
0
1: Direct load enable for manual duty mode
244
Dec, 2011
V0.12P