f75387 Feature Integration Technology Inc., f75387 Datasheet - Page 21

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

Power on default <7:0> = 0x00_1100 b
Power on default <7:0> = 0000_0000 b
Bit
8.2.
8.3.
7
6
5
4
3
2
1
0
7-6
Bit
1
0
5
Reserved
FAN_FULL_DUTY
EN_V_FAULT_PIN2
EN_F_FAULT_PIN4
T2_MODE
T1_MODE
PIN4_MODE
PIN2_MODE
Configuration Register  Index 01h
Configuration Register  Index 02h
EN_ARA_MODE
PIN5_MODE
SMI_MODE
Name
START
Name
Attribute
Attribute
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
-
This register is reset by ARA command.
Enable SMBAlert.
Set one to enable startup of monitoring operations; a zero puts the part in
standby mode.
Description
Return 0 when read
0: The PWM duty will be 60% during the keep full time.
1: The PWM duty will be 100% during the keep full time.
The mode is trappable. If the pull-up resistor of pin3 is 10k or none, the
default is 0 (60%). If the pull-up resistor of pin3 is 2.2k or 200k, the
default is 1(100%).
0: The PIN2 will act as GPIO0/FANIN2 which is controlled by
PIN2_MODE register.(default)
1: The PIN2 will act as VOLT_FAULT#
0: The PIN4 will act as GPIO1/PWMOUT2 which is controlled by
PIN4_MODE register.(default)
1: The PIN4 will act as FAN_FAULT#.
0: VT2 is connected to a thermistor
1: VT2 is connected to a BJT(default)
0: VT1 is connected to a thermistor
1: VT1 is connected to a BJT (default)
Pin 4 mode select.
0: The PIN4 will act as GPIO1.(default)
1: The PIN4 will act as PWMOUT2.
Pin 2 mode select.
0: The PIN2 will act as GPIO0.(default)
1: The PIN2 will act as FANIN2 input.
00: pin5 function is GPIO2.(default)
01: pin5 is used as SMI
10: pin5 is used as Fan fault function
11: LED out(1Hz/0.5Hz select by LED_FREQ register)
0: SMI will be level mode.(default)
1: SMI will be pulse mode.
19
Description
July, 2007
F75387
0.27P