ADT7490ARQZ-R7 datasheet(66/75 Pages) ONSEMI

No. de pieza	ADT7490ARQZ-R7

Descripción Electrónicos	dBCool Remote Thermal Monitor and Fan Controller with PECI Interface

PDF	75 Pages

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Fabricante Electrónico	ONSEMI [ON Semiconductor]

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ADT7490

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Table 71. Register 0x7B — TACH Pulses per Revolution Register (Power−On Default = 0x55)

Bit No.

Mnemonic

R/W

Description

[1:0]

FAN1

R/W

Sets number of pulses to be counted when measuring Fan 1 speed. Can be used to

determine fan pulses per revolution for unknown fan type.

Bit Code

Pulses Counted

2 (default)

[3:2]

FAN2

R/W

Sets number of pulses to be counted when measuring Fan 2 speed. Can be used to

determine fan pulses per revolution for unknown fan type.

Bit Code

Pulses Counted

2 (default)

[5:4]

FAN3

R/W

Sets number of pulses to be counted when measuring Fan 3 speed. Can be used to

determine fan pulses per revolution for unknown fan type.

Bit Code

Pulses Counted

2 (default)

[7:6]

FAN4

R/W

Sets number of pulses to be counted when measuring Fan 4 speed. Can be used to

determine fan pulses per revolution for unknown fan type.

Bit Code

Pulses Counted

2 (default)

ADT7490ARQZ-R7 Datasheet(PDF) 66 Page - ON Semiconductor