其特点是电路简单、占用口线少、速率高、可靠，可实现全双工通信。
It has characteristics of simple circuit, needing few interface lines, high reliability and can perform duplex communication at high speed.
本文介绍了利用VHDL语言设计出全双工异步接收发送器电路的方法，并通过计算机仿真和实验证明了设计的正确性。
In this paper, the design of full duplex UART base on VHDL is thoroughly discussed. And the exactitude of this design has been proved by means of computer simulation and experiment.
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