FPGA Implementation of Special Asynchronous Serial Communication Interface Circuit

FPGA implementation method of using asynchronous serial communication interface circuit is proposed.The dual-port RAM pingpong operation,CRC check,state machine,framing and other operations are used in the method to describe,the FPGA design of each module.The Modelsim simulation results of the asynchronous interface circuit under the integrated development of software is presented.The results show that the asynchronous serial communication with FPGA resources can simplify circuit design,improve program flexibility and practicality,and benefit program application in different occasions.