TC665 datasheet(18/36 Pages) MICROCHIP

Teilenummer	TC665

Bauteilbeschribung	SMBus??PWM Fan Speed Controllers With Fan Fault Detection

PDF	36 Pages

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Hersteller	MICROCHIP [Microchip Technology]

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18 / 36 page

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

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

pulled low.

See Register 6-2 for the Fan Fault

Threshold Register 8-bit format.

FAN FAULT THRESHOLD REGISTER (FAN_FAULT)

D(7)

D(6)

D(5)

D(4)

D(3)

D(2)

D(1)

D(0)

RPM

000

010

100

...

111

110

12700

111

12750

TC665 Datenblatt(PDF) 18 Page - Microchip Technology