P極數 PWM 控制方式
N : Count Number
P : FG pulses number per revolution of fan.
For CLK = 32768Hz, P = 2
⇒N = 491520 / rpm
For CLK = 16384Hz, P = 2
⇒N = 245762 / rpm
Some selected count numbers are shown below
Table 2. Count numbers for P=2
rpm CLK=32768Hz CLK=16384Hz |