Design and simulation implementation of SPI protocol interface based on Verilog

Abstract

The SPI bus protocol can communicate with multiple peripherals without address bits. The transmission speed is fast and the configuration is simple and flexible, which solves the problem of serial communication between microprocessors and peripherals. In order to simply realize the function of the SPI bus and verify its stability, the SPI bus is designed and simulated verified using Verilog language and Modelsim software. The results show that the design realizes the full-dus-duserial synchronous communication function of SPI bus, with high data transmission stability and a data transmission speed of more than 2Mb/s. At the same time, during the test, it is found that the serial communication protocol can continue to be improved in terms of reliability, stability, and efficiency. Under the current social needs, the security of serial communication protocols is also put forward higher requirements and needs to be further adapted to the needs of the Internet of Things.