f75387 Feature Integration Technology Inc., f75387 Datasheet - Page 29

• Manufacturer Part Number: f75387
• Description: ?1o C Accuracy H/w Monitor Ic With Automatic Fan Speed Control
• Manufacturer: Feature Integration Technology Inc.

Bit
7
6
5
4
3
2
1
0
PWM2_PAD_TYPE
FAN2_MANU_MODE
FAN1_MANU_MODE
FAN2_DUTY_MODE
FAN1_DUTY_MODE
FAN2_DAC_MODE
PWM1_PAD_TYPE
FAN1_DAC_MODE
Name
Attribute
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
This register control the pad type of pin4 when it act as PWMOUT2:
0: open drain.
This register is trappable. Power on default value depends on the status
of pin3 (PWMOUT1/ADDR_TRAP) at the moment of power on. If the pin
is pull-up by 200K or none, the value is 1; if the pin is pull-up by 2.2k or
10k, the value is 0.
0: indicates the fan control will follow the expected RPM.
1: indicates the fan control will follow the expected PWM duty.
0: indicates the fan control is a PWM fan.
1: indicates the fan control is a DAC fan.
Power
(PWMOUT1/ADDR_TRAP) at the moment of power on. If the pin is
pull-up by 200K or none, the mode is DAC mode; if the pin is pull-up by
10k or 2.2k, the mode is PWM mode.
0: indicates the fan control is in auto mode (auto generates expected fan
speed according to the monitor value of VT2 temperature sensor).
1: indicates the fan control is in manual mode (program expected fan
speed to CR84, CR85).
This register control the pad type of PWMOUT1:
0: open drain.
This register is trappable. Power on default value depends on the status
of pin3 (PWMOUT1/ADDR_TRAP) at the moment of power on. If the pin
is pull-up by 200K or none, the value is 1; if the pin is pull-up by 2.2k or
10k, the value is 0.
0: indicates the fan control will follow the expected RPM.
1: indicates the fan control will follow the expected PWM duty.
0: indicates the fan control is a PWM fan.
1: indicates the fan control is a DAC fan.
Power
(PWMOUT1/ADDR_TRAP) at the moment of power on. If the pin is
pull-up by 200K or none, the mode is DAC mode; if the pin is pull-up by
10k or 2.2k, the mode is PWM mode.
0: indicates the fan control is in auto mode (auto generate expected fan
speed according to the monitor value of VT1 temperature sensor).
1: indicates the fan control is in manual mode (program expected fan
speed to CR74, CR75).
27
on
on
default
default
1: push pull.
1: push pull.
value
value
Description
depends
depends
on
on
the
the
status
status
July, 2007
F75387
of
of
0.27P
pin3
pin3