F81867 Datasheet, PDF (79/315 Pages) Feature Integration Technology Inc. – 6 UARTs μSuper IO With 128 Bytes FIFO and Power Saving Functions

B2h
R/W
VBAT
B3h
R/W
VBAT
B4h
R/W
5VSB
B5h
R/W
5VSB
8’h00
8’h01
8’h03
8’hff
F81867
RPM mode(CR96 bit2=0):
FAN2 expect speed count value (MSB), in auto fan mode(CR96
bit3Î0) this register is auto updated by hardware.
Duty mode (CR96 bit2=1):
This byte is reserved byte.
RPM mode(CR96 bit2=0):
FAN2 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 bit2=1):
The Value programming in this byte is duty value. In auto fan mode
(CR96 bit3Î0) this register is updated by hardware.
Ex: 5Î 5*100/255 %
255 Î 100%
FAN2 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.
FAN2 full speed count reading (LSB).
VT2 BOUNDARY 1 TEMPERATURE – Index B6h
Bit
Name
R/W Reset Default
Description
The first boundary temperature for VT2 in temperature mode.
When VT2 temperature exceeds this boundary, FAN2 expect value will
3Ch ^{load from segment 1 register (index Bah).}
7-0
BOUND1TMP2
R/W 5VSB _{(60oC) When VT2 temperature is under this boundary – hysteresis, FAN2 expect}
value will load from segment 2 register (index BAh).
This byte is a 2’s complement value ranging from -128^ºC ~ 127^ºC.
VT2 BOUNDARY 2 TEMPERATURE – Index B7
Bit
Name
R/W Reset Default
Description
The 2nd BOUNDARY temperature for VT2 in temperature mode.
When VT2 temperature is exceed this boundary, FAN2 expected value
32 will load from segment 2 register (index BBh).
7-0
BOUND2TMP2
R/W 5VSB _{(50ºC) When VT2 temperature is below this boundary – hysteresis, FAN2}
expected value will load from segment 3 register (index BCh).
This byte is a 2’s complement value ranging from -128^ºC ~ 127^ºC.
79
Dec, 2011
V0.12P