Design Of SPI And UART For 28Gb/S Optical Transceiver

Digital integrated circuits are an important scope in the current.The digital control module of the chip is used as a bridge to shoulder the communication with the off-chip chip and ensure the serious responsibility of the internal analog module.Therefore,the research of digital control module not only has industrial application value,but also helps individuals deepen their understanding of integrated circuit system design.With the development of VLSI process technology,the development of SoC has become a trend.At the same time,SoC has been widely used in various fields of modern life.In order to meet the needs of users who want products to communicate with multiple devices,many SoC chips support multiple interfaces,such as SPI,UART,USB,and I~2C.Among them,SPI and UART are widely used for their unique characteristics.This project designs and implements a digital control module based on 0.13?m BiCMOS process.This project enables external MCU to communicate with optical communication modules via SPI and UART interfaces.Many modules are configured to work properly,such as CDR,AGC and EQ.The design is designed according to the standard digital integrated circuit design flow,including Verilog code writing,functional verification,logic synthesis,layout planning,automatic place and route,static timing analysis,and Verilog post-simulation.This dissertation also introduces the verification platform based on the SystemVerilog and how to perform functional coverage analysis.The verification results show that the digital module can correctly receive datas from the MCU,and can correctly send datas to the MCU,realizing two-way communication between modules.The functional coverage reaches 100%.And this desing can correctly perform digital control on the optical communication module.In conclusion,the design meets design requirements.