ADT7473_11 ONSEMI [ON Semiconductor], ADT7473_11 Datasheet - Page 64
ADT7473_11
Manufacturer Part Number
ADT7473_11
Description
dbCOOL Remote Thermal Monitor and Fan Control
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet
1.ADT7473_11.pdf
(74 pages)
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Table 35. Register 0x5F, Register 0x60, and Register 0x61 — TEMP T
(Power−On Default = 0xCC)
Bit No.
[2:0]
[7:4]
[3]
Mnemonic
RANGE
FREQ
HF/LF
R/W
R/W
R/W
R/W
Bit Code
000
001
010
011
100
101
110
111
These bits control the PWMx frequency.
HF/LF = 1, high frequency PWM output for 4−wire fans. Once enabled, 3−wire fan−specific
settings have no effect.
0x5F, HF/LF = 1, enables high frequency mode for Fan 1.
0x60, HF/LF = 1, enables high frequency mode for Fan 2.
0x61, HF/LF = 1, enables high frequency mode for Fan 3.
These bits determine the PWM duty cycle vs. the temperature slope for automatic fan control.
Bit Code
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
http://onsemi.com
64
RANGE
Description
Frequency
Temperature
11.0 Hz
14.7 Hz
22.1 Hz
29.4 Hz
35.3 Hz (default)
44.1 Hz
58.8 Hz
88.2 Hz
2°C
2.5°C
3.33°C
4°C
5°C
6.67°C
8°C
10°C
13.33°C
16°C
20°C
26.67°C
32°C (default)
40°C
53.33°C
80°C
/PWM Frequency Registers,
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