AS5712-54x Fan control Algorithm

1.If any FAN failed, set all the other fans as full speed (100%)

Normal state: when temperature is rising:
2. When (LM75-1 + LM75-2)/2 >= 49.5 C, set fan speed from 40% to 65%.
3. When (LM75-1 + LM75-2)/2 >= 53C, set fan speed from 65% to 80% 
4. When (LM75-1 + LM75-2)/2 >= 57.7C, set fan speed from 80% to 100%

Normal state: when temperature is falling:
5. When (LM75-1 + LM75-2)/2 <= 52.7C, set fan speed from 100% to 80% 
6. When (LM75-1 + LM75-2)/2 <= 47.7C, set fan speed from 80% to 65% 7. When (LM75-1 + LM75-2)/2 <= 42.7C, set fan speed from 65% to 40%

Default state:
8. The default FAN speed is 40%

