With the continuous development of embedded technology, higher requirements are raised for high-speed data processing, precise control and multi-chip collaboration, and inter-chip communication issues become increasingly prominent. In this paper, using the ARM GPIO interface simulation data bus, and DSP EHPI interface communication, the read-write operation of digital signal processor (DSP) memory data by the controller of ARM is realized.%随着嵌入式技术应用的不断发展，对高速数据处理、精确控制和多芯片协作提出了更高的要求，芯片间协作通信问题日益凸显。本文通过使用ARM的GPIO接口仿真数据总线，与DSP的EHPI接口通信，实现了控制器ARM对数字信号处理器DSP内存数据的读写操作。
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