基于FPGA的UART电路的设计

Design of a kind of UART circuit based on FPGA

本文分析了通用异步收发器(UART)的功能特点。利用FPGA设计实现了UART的核心功能,包括波特率发生模块、发送模块和接收模块,并给出了仿真结果。程序下载到FPGA芯片中,通信数据完全正确。该设计不仅实现了异步通讯的主要功能,而且电路简单,工作稳定、可靠,可以将其灵活地嵌入到各个通信系统中。

This paper describes the function and characteristics of UART. The key functions of FPGA, which include baud rate producer, transmitter and receiver, were implemented on FPGA. The simulation result is also given in this paper, After the program is downloaded in a FPGA chip, it works well and the data is totally correct. This design realizes the main function of UART. The circuit is simple and works stably and credibly, It can be embeded into various communication systems flexibly.