This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
这个calibration应该是apll锁定的前提,用于检测主时钟是否满足要求。我将led灯设置为pll1 vco calibration active,当我在软件上pll mode control上将powerdown重置时,只能看见这个灯短暂的闪烁一下,那这说明主时钟满足要求吗?(自身板子的晶振和我外接入晶振做主时钟都是这样);如果满足的话,按照流程图,apll应该锁定了,但是将led灯设置为pll1 lock detected又不亮,这是什么问题?