F71869A
This register controls the FAN1 duty movement when temperature
under (highest boundary – hysteresis).
0: The FAN1 duty will decreases with the slope selected by
FAN1_RATE_SEL register.
FAN1_JUMP
_LOW_EN
2
R/W
1
1: The FAN1 duty will directly jumps to the value of SEC2SPEED1
register.
This bit only activates in duty mode.
This registers company with FAN1_TEMP_SEL_DIG select the
temperature source for controlling FAN1. The following value is
comprised by {FAN1_TEMP_SEL_DIG, FAN1_TEMP_SEL}
000: fan1 follows PECI temperature (CR7Eh)
001: fan1 follows temperature 1 (CR72h).
010: fan1 follows temperature 2 (CR74h).
011: fan1 follows temperature 3 (CR76h).
100: fan1 follows IBX/TSI CPU temperature (CR7Ah)
101: fan1 follows IBX PCH temperature (CR7Bh).
110: fan1 follows IBX MCH temperature (CR7Ch).
111: fan1 follows IBX maximum temperature (CR7Dh).
Others are reserved.
1-0
FAN1_TEMP_SEL R/W
01
6.6.76 FAN2 Index B0h~BFh
Address Attribute Default Value
Description
FAN2 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
B1h
RO
RO
8’h0f
8’hff
FAN2 count reading (LSB).
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
B3h
R/W
R/W
8’h00
8’h01
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
98
Oct., 2011
V0.19P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
