F71872
7-0 F1_FAULT_TIME
R/W
03h This register determines the time for fan to chase to the expect speed. Two
conditions cause fan fault event:
(1). When PWM_Duty reaches FFh, if the fan speed count can’t reach the
fan expect count in the time.
(2). When PWM_Duty reaches 00h, if the fan speed count can’t reach the
fan expect count in the time.
The unit of this register is 1 second. The default value is 3 seconds.
7.6.3.34 FAN1 Expect count Register---Index 69h
Bit
Name
R/W Default
Description
7-4 Reserved
3-0 F1_EXPECT (MSB)
-
R
00h
User expect fan1 count value, program this register to control the expect
fan1 speed
7.6.3.35 FAN1 Expect count Register-- Index 6Ah
PBit
Name
R/W Default
Description
7-0 F1_EXPECT (LSB)
R
00h User expect fan1 count value, program this register to control the expect fan1
speed.
7.6.3.36 FAN1 PWM_DUTY -- Index 6Bh
Bit
Name
R/W Default
R/W
Description
7-0 PWM_DUTY1
FFh When FAN1 control is at PWM Duty-cycle mode, this value represents the
duty-cycle.
When FAN1 control is at DC mode, this value represents the DC voltage
output. Each step (LSB) is VCC / 256.
This register is programmable at Manual mode.
At SPEED or TEMPERATURE mode, this register reflects current
FANPWM1 duty-cycle.
7.6.3.37 FAN2 OPERATING Control Register -- Index 70h
Bit
Name
FAN2_SKIP
R/W Default
Description
7
R
-
When this bit is set to 1, FAN2 is not monitored.
When this bit is set to 0, FAN2 is monitored.
6
5
Reserved
FAN2_FORCE_MONI
TOR
-
-
Reserved.
Set to 1, FAN2 speed is monitored every monitor cycle even the fan is
stopped. Set to 0, FAN2 speed will not be monitored at the next monitor cycle if
the fan is stopped.
R/W
0
FAN2_DC_MODE
Set to 1, FAN2 control is set to DC mode.
4
R/W
0
Set to 0, FAN2 control is set to PWM duty-cycle mode.
Set to 1, current FAN2 COUNT will be bypass to F2_FULL_SPEED.
Set to 1, keep FANPWM2 duty-cycle decrease to STOP DUTY and hold.
3
2
F2_LATCH_FULL
F2_KEEP_STOP
R/W
R/W
0
0
79
July, 2007
V0.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
