Tool/software:
The AMC6821-Q1 registers are configed as blow:
0x00 0x18
0x01 0x07
0x04 0x80
0x20 0x88
0x23 0x50
AMC6821-Q1 is only worked as a pwm generater to contol a 4-wire fan,the freqency is 10KHz, but the pwm_out pin output
a almost 120Hz pules，but in the high level of the pules includes 10KHz pulse, why?
