ADT7476 Analog Devices, Inc., ADT7476 Datasheet - Page 64

• Manufacturer Part Number: ADT7476
• Description: Dbcool Remote Thermal Controller And Voltage Monitor
• Manufacturer: Analog Devices, Inc.

ADT7476
Table 39. Register 0x63—Enhanced Acoustics Register 2 (Power-On Default = 0x00)
Bit
[2:0]
[3]
[6:4]
[7]
1
This register becomes read-only when the Configuration Register 1 LOCK bit is set to 1. Any subsequent attempts to write to this register fail.
Name
ACOU3
EN3
ACOU2
EN2
R/W
R/W
R/W
R/W
R/W
1
Description
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 gradually at the rate determined by these bits. This feature ultimately enhances the
acoustics of the fan.
When Bit 7 of Configuration Register 6 (0x10) is 0
Time Slot Increase
000 = 1
001 = 2
010 = 3
011 = 4
100 = 8
101 = 12
110 = 24
111 = 48
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
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 gradually at the rate determined by these bits. This feature
ultimately enhances the acoustics of the fan.
When Bit 7 of Configuration Register 6 (0x10) is 0
Time Slot Increase
000 = 1
001 = 2
010 = 3
011 = 4
100 = 8
101 = 12
110 = 24
111 = 48
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
When this bit is 1, smoothing is enabled on the Remote 2 temperature channel.
Rev. B | Page 64 of 72
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
Time for 0% to 100%
52.2 sec
26.1 sec
17.4 sec
10.4 sec
6.5 sec
4.4 sec
2.2 sec
1.1 sec
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
Time for 0% to 100%
52.2 sec
26.1 sec
17.4 sec
10.4 sec
6.5 sec
4.4 sec
2.2 sec
1.1 sec