F71862
A2h
A3h
-
-
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 %
R/W
8’h01
255 Æ 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).
A4h
A5h
R/W
R/W
8’h03
8’hff
VT1 BOUNDARY 1 TEMPERATURE – Index A6h
Bit
7
Name
R/W Default
Description
Return 0 when read.
Reserved
RO
0
The 1st BOUNDARY temperature for VT1 in temperature mode.
When VT1 temperature is exceed this boundary, FAN1 expect value will
load full speed duty 8’hFF.
3Ch
(60oC)
6-0
BOUND1TMP1
R/W
When VT1 temperature is below this boundary – hysteresis, FAN1 expect
value will load from segment 1 register (index ABh).
VT1 BOUNDARY 2 TEMPERATURE – Index A9
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 ABh).
1Eh
(30oC)
6-0
BOUND4TMP1
R/W
When VT1 temperature is below this boundary – hysteresis, FAN1 expect
value will load from segment 2 register (index AEh).
FAN1 SEGMENT 1 SPEED COUNT – Index ABh
Bit
Name
R/W Default
Description
The value that set in this byte is mean the expect PWM duty-cycle in this
temperature section.
D9h
R/W
7-0
SEC1SPEED1
(85%)
FAN1 SEGMENT 2 SPEED COUNT
– Index AEh
Bit
Name
R/W Default
Description
The value that set in this byte is mean the expect PWM duty-cycle in this
temperature section.
80h
R/W
7-0
SEC2SPEED1
(50%)
FAN1 Temperature Mapping Select – Index AFh
Bit
7-6
5
Name
Reserved
R/W Default
Description
Reserved
--
0
0
0
Set 1 to force FAN1 to full speed if any temperature over its high limit.
Set 1 will enable the interpolation of the fan expect table.
FAN1_UP_T_EN
FAN1_INTERPOLATION_
EN
R/W
4
R/W
This register controls the FAN1 duty movement when temperature over
highest boundary.
0: The FAN1 duty will increases with the slope selected by
FAN1_RATE_SEL register (Index 9Bh).
1: The FAN1 duty will directly jumps to full speed.
1
3
FAN1_JUMP_HIGH_EN R/W
59
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
