f75387 Feature Integration Technology Inc., f75387 Datasheet - Page 35

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

INDEX A0 -- AD registers – FAN1 CONTROL v.s. TEMPERATURE 1
Power-on default [7:0] =0000_0000b
Power-on default [7:0] = N.A.
Power-on default [7:0] =46h
Bit
Bit
Bit
7-4
7-4
6-0
8.39. GPIOx Output Data Register – Index 91h
8.40. GPIO1x Input Status Register – Index 92h
8.41. VT1 BOUNDARY 1 TEMPERATURE – Index A0h
3
2
1
0
3
2
1
0
7
GPIO3_ODATA
GPIO2_ODATA
GPIO1_ODATA
GPIO0_ODATA
GPIO0_PSTS
BOUND1TMP1
GPIO3_PSTS
GPIO2_PSTS
GPIO1_PSTS
Reserved
Reserved
Reserved
Name
Name
Name
Attribute
Attribute
Attribute
R/W
R/W
R/W
R/W
RO
RO
R/W
RO
RO
RO
RO
RO
GPIO3 output data.
GPIO2 output data.
GPIO1 output data.
GPIO0 output data.
Return 0 when read.
Return 0 when read.
The 1
When VT1 temperature exceeds this boundary, FAN1 segment 1 speed
count register (index A4h x 16 or index A4h depending on the
FAN1_MODE[2] register) will be loaded into FAN1 expected count registers
(index 74h, 75h).
When VT1 temperature is below this boundary – hysteresis, FAN1 segment
2 speed count register (index A5h x 16 or index A5h depending on the
FAN1_MODE[2] register) will be loaded into FAN1 expected count
registers(index 74h,75h).
Return 0 when read.
Read the pin status of pin6.
Read the pin status of pin5.
Read the pin status of pin4.
Read the pin status of pin2.
st
BOUNDARY temperature for VT1 in temperature mode.
33
Description
Description
Description
July, 2007
F75387
0.27P