F71862
This register controls the FAN1 duty movement when temperature under
(highest boundary – hysteresis).
1
0: The FAN1 duty will decreases with the slope selected by
FAN1_RATE_SEL register (Index 9Bh).
1: The FAN1 duty will directly jumps to the value of SEC1SPEED1
register.
2
FAN1_JUMP_LOW_EN R/W
0: reserved.
1: fan1 follow temperature 1.
1-0
Fan1_temp_sel
R/W
1h
2: fan1 follow temperature 2.
3: fan1 follow temperature 3.
Fan2 Index B0h- BFh
Default
Value
Address
Attribute
Description
FAN1 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.
B0h
RO
8’h0f
B1h
B2h
RO
R/W
8’hff
8’h00
FAN1 count reading (LSB).
Reserved
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 %
B3h
R/W
8’h01
255 Î 100%
FAN1 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.
FAN1 full speed count reading (LSB).
B4h
B5h
R/W
R/W
8’h03
8’hff
VT2 BOUNDARY 1 TEMPERATURE – Index B6h
Bit
Name
R/W Default
Description
Return 0 when read.
7
Reserved
RO
0
The 1st BOUNDARY temperature for VT2 in temperature mode.
When VT2 temperature is exceed this boundary, FAN2 expect value will
load full speed duty 8’hFF.
3Ch
(60oC)
6-0
BOUND1TMP2
R/W
When VT2 temperature is below this boundary – hysteresis, FAN2 expect
value will load from segment 1 register (index BBh).
VT2 BOUNDARY 2 TEMPERATURE – Index B9
Bit
Name
R/W Default
Description
Return 0 when read.
7
Reserved
RO
0
The 2st BOUNDARY temperature for VT1 in temperature mode.
When VT1 temperature is exceed this boundary, FAN1 expect value will
load from segment 1 register (index BBh).
1Eh
(30oC)
6-0
BOUND2TMP1
R/W
When VT1 temperature is below this boundary – hysteresis, FAN1 expect
value will load from segment 2 register (index BEh).
60
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
