ADT7473_11 ONSEMI [ON Semiconductor], ADT7473_11 Datasheet - Page 71

• Manufacturer Part Number: ADT7473_11
• Description: dbCOOL Remote Thermal Monitor and Fan Control
• Manufacturer: ONSEMI [ON Semiconductor]

Table 55. Register 0x7B — TACH Pulses per Revolution Register (Power−On Default = 0x55)
Bit No.
[1:0]
[3:2]
[5:4]
[7:6]
Mnemonic
FAN1
FAN2
FAN3
FAN4
R/W
R/W
R/W
R/W
R/W
Bit Code
Bit Code
Bit Code
Bit Code
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
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.
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.
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.
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.
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71
Description
Pulses Counted
Pulses Counted
Pulses Counted
Pulses Counted
1
2 (default)
3
4
1
2 (default)
3
4
1
2 (default)
3
4
1
2 (default)
3
4