the vhdl driver:uart communication:rs232(EIA):baud:9600kbps

串口传输，传输协议为RS232。RS-232C标准是美国EIA（电子工业联合会）与BELL等公司一起开发的1969年公布的通信协议。-Serial transmission, the transmission protocol for RS232. RS-232C standard communication protocol is developed with the EIA (Electronic Industries Association) BELL companies in the U