Analog Devices dBCool ADT7473 Manual page 67

Table 36. Register 0x5F, Register 0x60, and Register 0x61—TEMP T
Bit Name R/W Description
[2:0] FREQ R/W These bits control the PWMx frequency.
000 = 11.0 Hz.
001 = 14.7 Hz.
010 = 22.1 Hz.
011 = 29.4 Hz.
100 = 35.3 Hz (default).
101 = 44.1 Hz.
110 = 58.8 Hz.
111 = 88.2 Hz.
[3] HF/LF R/W
HF/
no
0x
0x60, HF/LF = 1 enables high fr
0x
[7:4] RANGE R/W Th
0000 = 2°C.
0001 = 2.5°C.
0010 = 3.33°C.
0011 = 4°C.
0100 = 5°C.
0101 = 6.67°C.
0110 = 8°C.
0111 = 10°C.
1000 = 13.33°C.
1001 = 16°C.
1010 = 20°C.
1011 = 26.67°C.
1100 = 32°C (default).
1101 = 40°C.
1110 = 53.33°C.
1111 = 80°C.
LF =1, ena bles high frequen
effect.
5F, HF/LF = 1 enables high fre
equency mode for Fan 2.
61, HF/LF = 1 enables high frequency mode for Fan 3.
ese bits determine the PWM duty cycle vs. the temperature slope for automatic fan control.
/PWM Freq
RANGE
cy PWM output for 4-wire fans. Once enabled, 3-wire fan-specific settings have
quency mode for Fan 1.
Rev. A | Page 67 of 76
uency Registers (Power-On Default = 0xCC)
ADT7473