一般来讲 选哪个都可以。 如果说涉及到ADC的触发时间点需要相对精准时可以选用同步时钟，比方通过TIMER触发ADC。
Option 2) has the advantage of bypassing the clock domain resynchronizations. This can be
useful when the ADC is triggered by a timer and if the application requires that the ADC is
precisely triggered without any uncertainty (otherwise, an uncertainty of the trigger instant is
added by the resynchronizations between the two clock domains).
楼主
标题置顶
标题高亮
