TC664 View Datasheet(PDF) - Microchip Technology
Part Name
Description
MFG CO.
'TC664' PDF : 36 Pages View PDF
TC664/TC665
6.2 FAN_FAULT Threshold Register
(FAN_FAULT)
The FAN_FAULT Threshold Register is used to set the
fan fault threshold level for the fan. The Fan Fault
Threshold Register is an 8-bit read/writable register
that allows the fan fault RPM threshold to be set in 50
RPM increments. The default setting for the Fan Fault
Register is 500 RPM (0000 1010). The maximum set
point value is 12750 RPM.
If the measured fan RPM (stored in the RPM Register)
drops below the value that is set in the Fan Fault Reg-
ister for more than 2.4 sec, FF (bit 0<0>) in the Status
Register will be set to a '1' and the FAULT output will be
pulled low. See Register 6-2 for the Fan Fault
Threshold Register 8-bit format.
REGISTER 6-2: FAN FAULT THRESHOLD REGISTER (FAN_FAULT)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(1)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
.
.
.
.
.
.
.
.
.
.
.
.
.
.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D(0)
RPM
0
0
0
50
0
100
.
.
0
12700
1
12750
DS21737B-page 18
2002-2013 Microchip Technology Inc.
Share Link: 
