Table 6.34 Fan Effective Duty Cycle Resolution and Frequency (continued)
EFFECTIVE
DUTY CYCLE
(AT 75%
EFFECTIVE
DUTY CYCLE
(AT 50%
PWM_F
[4:0]
SETTING
EFFECTIVE
RESOLUTION
(%)
FAN_SETTING
TO GET 75%
DUTY CYCLE
PWM FREQUENCY
AT 360KHZ BASE
FREQUENCY (KHZ)
PWM FREQUENCY
AT 1.4KHZ BASE
FREQUENCY (HZ)
FAN_SETTING)
FAN_SETTING)
14h
15h
16h
17h
18h
19h
1Ah
1Bh
1Ch
1Dh
1Eh
1Fh
2.50
2.38
2.27
2.17
2.08
2.00
1.92
1.85
1.79
1.72
1.67
1.61
100%
100%
100%
100%
100%
96%
80.0%
76.2%
72.7%
69.7%
66.7%
64.0%
61.5%
59.3%
57.1%
55.2%
53.3%
51.6%
1Eh (75.0%)
1Fh (73.8%)
21h (75.0%)
22h (73.9%)
24h (75.0%)
25h (74.0%)
27h (75.0%)
28h (74.1%)
2Ah (75.0%)
2Bh (74.1%)
2Dh (75.0%)
2Eh (74.2%)
9.00
8.57
8.18
7.83
7.50
7.20
6.92
6.67
6.43
6.21
6.00
5.81
35.2
33.5
32.0
30.6
29.3
28.2
27.1
26.1
25.1
24.3
23.5
22.7
92.3%
88.9%
85.7%
82.8%
80.0%
77.4%
SMSC [ SMSC CORPORATION ]
