主要讨论了FPGA在多单片机串行读数系统中的应用,在该系统中单片机通过异步串行通信读取外部设备中的数据,经FPGA缓冲后再送到USB单片机,最终上传到计算机。文中重点介绍了利用FPGA内部双口RAM构建的FIFO在该系统中的具体应用以及FPGA如何协调各单片机的工作。 This paper mainly discusses the application of FPGA in multi-chip serial readout system. In this system, the single-chip microcomputer reads the data of the external device through asynchronous serial communication, buffers it by FPGA and then sends it to the USB micro-controller, finally it is uploaded to the computer. This article focuses on the use of dual-port FPGA built-in dual FIFO RAM in the system of specific applications and FPGA how to coordinate the work of the microcontroller.