ADT7476ARQH ONSEMI [ON Semiconductor], ADT7476ARQH Datasheet - Page 58
ADT7476ARQH
Manufacturer Part Number
ADT7476ARQH
Description
dBCOOL Remote Thermal Controller and Voltage Monitor
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet
1.ADT7476ARQH.pdf
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1. This register becomes read−only when the Configuration Register 1 lock bit is set to 1. Any further attempts to write to this register have no effect.
Table 33. Register 0x63 — Enhanced Acoustics Register 2 (Power−On Default = 0x00)
Bit No.
[2:0]
[6:4]
[2:0]
[3]
[7]
Mnemonic
ACOU3
ACOU2
ACOU3
EN3
EN2
R/W (Note 1)
R/W
R/W
R/W
R/W
R/W
When Bit 7 of Configuration Register 6 (0x10) is 0
Time Slot Increase
When Bit 7 of Configuration Register 6 (0x10) is 1
Time Slot Increase
When Bit 7 of Configuration Register 6 (0x10) is 0
Time Slot Increase
When Bit 7 of Configuration Register 6 (0x10) is 1
Time Slot Increase
000 = 1
001 = 2
010 = 3
011 = 4
100 = 8
101 = 12
110 = 24
111 = 48
000 = 1
001 = 2
010 = 3
011 = 4
100 = 8
101 = 12
110 = 24
111 = 48
000 = 1
001 = 2
010 = 3
011 = 4
100 = 8
101 = 12
110 = 24
111 = 48
000 = 1
001 = 2
010 = 3
011 = 4
100 = 8
101 = 12
110 = 24
111 = 48
Assuming that PWMx is associated with the local temperature channel, these bits define the
maximum rate of change of the PWMx output for local temperature related changes. Instead of
the fan speed jumping instantaneously to its newly determined speed, it ramps gracefully at the
rate determined by these bits. This feature ultimately enhances the acoustics of the fan.
When this bit is 1, smoothing is enabled on the local temperature channel.
Assuming that PWMx is associated with the Remote 2 temperature channel, these bits define
the maximum rate of change of the PWMx output for Remote 2 Temperature related changes.
Instead of the fan speed jumping instantaneously to its newly determined speed, it ramps
gracefully at the rate determined by these bits. This feature ultimately enhances the acoustics of
the fan.
When this bit is 1, smoothing is enabled on the Remote 2 temperature channel.
http://onsemi.com
58
Description
Time for 0% to 100%
Time for 0% to 100%
Time for 0% to 100%
Time for 0% to 100%
37.5 sec
18.8 sec
12.5 sec
7.5 sec
4.7 sec
3.1 sec
1.6 sec
0.8 sec
52.2 sec
26.1 sec
17.4 sec
10.4 sec
6.5 sec
4.4 sec
2.2 sec
1.1 sec
37.5 sec
18.8 sec
12.5 sec
7.5 sec
4.7 sec
3.1 sec
1.6 sec
0.8 sec
52.2 sec
26.1 sec
17.4 sec
10.4 sec
6.5 sec
4.4 sec
2.2 sec
1.1 sec
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