ADM1029
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Table 26. REGISTER 10H, 11H  FAN X* STATUS (POWER-ON DEFAULT 0000 0?0?)
Bit
Name
R/W
Description
0
Missing = x
R
Reflects the state of Pins 4/21. Low means Fan x* is installed, High
means it is missing. This bit will automatically return Low if a missing fan
is replaced.
1
Missing _L = 0
R/W
This bit is edge-triggered and latches a Fan x* missing event on removal
of Fan x. This bit is cleared by writing a 0 to it.
2
Fault_ = x
R
Inverse of Pin 2/23. Low on pin means Fan x* has a fault (Pins 2/23 Low),
High on pin means it is OK. This bit will automatically return Low if Pins
2/23 goes high.
3
Fault_L_ = 0
R/W
This bit is edge-triggered and latches a Fan x* fault event on Pins 2/23.
This bit is cleared by writing a 0 to it. If the PRESENT
 pin for a fan input is
high (fan not installed) this bit will be cleared automatically.
4
Sleep = 0
R/W
When this bit is set, Fan x* will be stopped and no Fan x* faults will be
monitored. If Bit 4 in Fan x* Fault Action Register is set, Fan x* will go to
Alarm Speed if an overtemperature event is detected as per settings in the
Temp Fault Action Registers.
5
Hot Plug Priority
R/W
This bit indicates whether Fan x runs at Hot-Plug Speed (bit set to 1) or
Alarm Speed (bit set to 0) if both modes are triggered.
6
Tach_Fault_L
R/W
Latches a Fan x Tach Fault. This bit is cleared by writing a 0 to it. If the
PRESENT
 pin for a fan input is high (fan not installed), this bit will be
cleared automatically.
7
Hot_Plug_L
R/W
This bit is edge-triggered and latches a Fan x Hot-plug event which is the
insertion of Fan x. (Note difference to Bit 1.) This bit is cleared by writing a
0 to it. If a fan is Hot-plug installed, it will run at Normal Speed.
* x denotes the fan number. Register 10h is for Fan 1 and Register 11h is for Fan 2.
NOTE: Question marks on this and following pages indicate bit settings that depend on the state of certain pins on power-up.
相关PDF资料
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