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四、I/O功能部件(一)高速输入(HSI)HSI部件可以用来高速记录一个事件出现时的时间值。这个时间值以十六位的硬件定时器1作为基准定时器。也就是说定时器1记录了一个外部事件到来的时间。高速输入有四个输入端HSI.0～HSI.3可供使用。图4给出HSI部件的基本逻辑框图。
Four, I / O features (A) high-speed input (HSI) HSI components can be used to record high-speed event time value. This time value uses 16-bit hardware timer 1 as the reference timer. This means Timer 1 records the time of an external event. High-speed input has four inputs HSI.0 ~ HSI.3 available. Figure 4 shows the basic logic block diagram of HSI components.