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TC665 데이터시트(PDF) 18 Page - Microchip Technology

부품명 TC665
상세설명  SMBus??PWM Fan Speed Controllers With Fan Fault Detection
PDF  36 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC665 데이터시트(HTML) 18 Page - Microchip Technology

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TC664/TC665
DS21737B-page 18
 2002-2013 Microchip Technology Inc.
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)
D(0)
RPM
000
00
000
0
000
00
000
50
000
00
010
100
.
...
...
.
.
...
...
.
111
11
110
12700
111
11
111
12750



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