摘要:
UART是设备和设备间进行通信的关键,当一个设备需要和另一个连接的设备进行通信时,通常采用数字信号,这种源自并行的信号必须转换成串行信号才能通过有线或无线传输到另一台设备。在接收端,串行信号又转换成并行信号进行处理,UART处理这种数据总线和串行口之间的串-并和并-串转换。本文所要实现的就是就是这种串-并和并-串的转换,使之能够进行数据的传输。本文介绍了用FPGA技术实现UART电路的一种方法,用VHDL进行编程,在Modelsim下进行编译及仿真等。
关键词:
FPGA,VHDL,UART,接收,发送
Abstract:
UART is the key of communications between devices.When a device needs to communicate with a connected device,usually digital signals applied,which must be transformed into serialised signal to another device through wires or wireless space.When being received to process, the serialised signals must be transformed to parellised signals.UART processes this serial_data to parallel_data /parallel _data to serial_data transform between data bus and slave port. This paper is to implement this serial to parallel and parallel to serial transform and make the transferring between data properly.This paper introduces a method implemented by FPGA technique programmed by VHDL,simulated and compiled by Modelsim.
Keyword:
FPGA,VHDL ,UART,receive ,send
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