F71862
Fan2 duty update rate:
00: 2Hz
01: 5Hz (default)
10: 10Hz
11: 20Hz
Fan1 duty update rate:
00: 2Hz
1h
1h
3-2 FAN2_RATE_SEL
1-0 FAN1_RATE_SEL
R/W
R/W
01: 5Hz (default)
10: 10Hz
11: 20Hz
FAN1 and FAN2 START UP DUTY-CYCLE/VOLTAGE Index 9Ch
Bit
Name
R/W Default
Description
When fan start, the FAN_CTRL2 will increase duty-cycle from 0 to this
(value x 8) directly. And if fan speed is down, the FAN_CTRL 2 will
decrease duty-cycle to 0 when the PWM duty cycle is less than this (value
x 4).
5h
7-4
FAN2_STOP_DUTY
R/W
When fan start, the FAN_CTRL 1 will increase duty-cycle from 0 to this
(value x 8 directly. And if fan speed is down, the FAN_CTRL 1 will
decrease duty-cycle to 0 when the PWM duty cycle is less than this (value
x 4).
5h
3-0
FAN1_STOP_DUTY
R/W
FAN3 START UP DUTY-CYCLE/VOLTAGE Index 9Dh
Bit Name R/W Default
7-4 Reserved
Description
Reserved.
R
0
When fan start, the FAN_CTRL 3 will increase duty-cycle from 0 to this
(value x 8 directly. And if fan speed is down, the FAN_CTRL 3 will
decrease duty-cycle to 0 when the PWM duty cycle is less than this (value
x 4).
5h
3-0
FAN3_STOP_DUTY
R/W
Fan Fault Time Register -- Index 9Fh
Bit
Name
R/W Default
Description
Reservd
7-5
Reserved
--
--
--
0: the full duty is 100%.
4
FULL_DUTY_SEL
R/W
1: the full duty is 60% (default).
This register is power on trap by DTR1#.
Reserved.
3-0 Reserved
R
0
Fan1 Index A0h- AFh
Default
Value
Address
Attribute
Description
FAN1 count reading (MSB). At the moment of reading this register, the LSB will
be latched. This will prevent from data updating when reading. To read the fan
count correctly, read MSB first and followed read the LSB.
A0h
A1h
RO
RO
8’h0f
8’hff
FAN1 count reading (LSB).
58
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
