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在阅读C66x中断部分的手册时，发现当中提到了在中断服务函数中不需要清中断就可以继续进中断，但连续周期性中断又需要清中断才能保证不丢失中断。对这句理解有些疑问，想问下为什么不清中断还可以进中断？另外为什么又要清中断才能保证不丢失呢？为何不强制要求清中断呢？
具体哪个文档哪一章节？
