F81867 Datasheet, PDF (256/315 Pages) Feature Integration Technology Inc. – 6 UARTs μSuper IO With 128 Bytes FIFO and Power Saving Functions

C2h
R/W
VBAT
C3h
R/W
VBAT
C4h
R/W
C5h
R/W
5VSB
5VSB
8’h00
8’h01
8’h03
8’hff
F81867
RPM mode(CR96 bit4=0):
FAN3 expect speed count value (MSB), in auto fan mode(CR96
bit5Î0) this register is auto updated by hardware.
Duty mode(CR96 bit4=1):
This byte is reserved byte.
RPM mode(CR96 bit4=0):
FAN3 expect speed count value (LSB) or expect PWM duty , in
auto fan mode this register is auto updated by hardware and read
only.
Duty mode(CR96 bit4=1):
The Value programming in this byte is duty value. In auto fan
mode(CR96 bit5Î0) this register is updated by hardware.
Ex: 5Î 5*100/255 %
255 Î 100%
FAN3 full speed 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.
FAN3 full speed count reading (LSB).
VT3 BOUNDARY 1 TEMPERATURE – Offset C6h
Bit
Name
R/W Reset Default
Description
The first boundary temperature for VT3 in temperature mode.
When VT3 temperature exceeds this boundary, FAN3 expect
value will load from segment 1 register (Offset CA)h.
3Ch
7-0 BOUND1TMP3 R/W 5VSB _(60oC) When VT3 temperature is under this boundary – hysteresis,
FAN3 expect value will load from segment 2 register (Offset
CAh).
This byte is a 2’s complement value ranging from -128’C ~ 127’C.
VT3 BOUNDARY 2 TEMPERATURE – Offset C7
Bit
Name
R/W Reset Default
Description
The 2nd BOUNDARY temperature for VT3 in temperature mode.
When VT3 temperature is exceed this boundary, FAN3 expected
value will load from segment 2 register (Offset CBh).
7-0
BOUND2TMP3
R/W
5VSB
32 When VT3 temperature is below this boundary – hysteresis,
(50^oC) FAN3 expected value will load from segment 3 register (Offset
CCh).
This byte is a 2’s complement value ranging from -128 ^oC ~ 127
o_C.
256
Dec, 2011
V0.12P