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):
B2h
R/W
VBAT
8’h00
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):
B3h
R/W
VBAT
8’h01
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.
B4h
B5h
R/W
R/W
5VSB
5VSB
8’h03
8’hff
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
load from segment 1 register (index Bah).
3Ch
(60oC)
7-0
BOUND1TMP2
R/W
5VSB
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 -128ºC ~ 127ºC.
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
will load from segment 2 register (index BBh).
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 -128ºC ~ 127ºC.
32
R/W 5VSB
(50ºC)
7-0
BOUND2TMP2
79
Dec, 2011
V0.12P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
