摘 要 ：根据D S P F 2 4 0 芯片的结构特点，介绍了一种F 2 4 x系列DSP芯片与P c 机之间串行通信接口的设计方法，并详细讨论了串行通信接口的硬件实现、 通信协议的设定以及通信程序的编制要点。 该设计方案简单易行、通信稳定可靠、具有一定的通用性。-Abstract: According to DSPF 2 4 0 chips structural features, introduces a F 2 4 x series DSP chip and P c machine serial communication interface between the design methods, and discussed in detail the hardware implementation of serial communication interface, communication protocols and communication procedures for the preparation of set points. The design is simple, stable and reliable communications with a certain degree of generality.