F71869A
6.6.58 Auto FAN3 Boundary Hystersis Select Register ⎯ Index 99h
Bit
Name
R/W Default
Description
7-4
Reserved
-
-
Reserved.
Boundary hysteresis. (0~15 degree C)
3-0
FAN3_HYS
R/W
2h
Segment will change when the temperature over the boundary
temperature and below the ( boundary – hysteresis ).
6.6.59 Fan3 Control Register ⎯ Index 9Ah
Bit
Name
R/W Default
Description
7
Reserved
-
-
Reserved.
This bit and FAN3_PWM_FREQ_SEL are used to select FAN3 PWM
frequency. NEW_FREQ_SEL3 = { FREQ_SEL_ADD3,
FAN3_PWM_FREQ_SEL}
6
5
4
FREQ_SEL_ADD3 R/W
FREQ_SEL_ADD2 R/W
FREQ_SEL_ADD1 R/W
0
00: 23.5 KHz
01: 220 Hz
10: 11.75 KHz
11: 5.875 KHz
This bit and FAN2_PWM_FREQ_SEL are used to select FAN2 PWM
frequency. NEW_FREQ_SEL2 = { FREQ_SEL_ADD2,
FAN2_PWM_FREQ_SEL}
0
00: 23.5 KHz
01: 220 Hz
10: 11.75 KHz
11: 5.875 KHz
This bit and FAN1_PWM_FREQ_SEL are used to select FAN1 PWM
frequency. NEW_FREQ_SEL1 = { FREQ_SEL_ADD1,
FAN1_PWM_FREQ_SEL}
00: 23.5 KHz
0
01: 220 Hz
10: 11.75 KHz
11: 5.875 KHz
3-2
1
Reserved
Reserved
R/W
R/W
0
1
Reserved (Keep the value of these two bits “0”)
Reserved (Keep the value of this bit “1”)
Set this bit 1 to enable the function that FAN3 output duty could be
adjusted by GPIO53/GPIO54.
0
FAN3_EXT_EN
R/W
0
91
Oct., 2011
V0.19P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
