Research On Optoelectronic Interface And Routing Controller Of Optoelectronic Interconnection Network

With the development of large-scale integrated circuits,the amount of network communication data has increased dramatically,and the requirements for high-speed data transmission are becoming higher.The traditional Network-on-Chip due to the integration of too many IP cores will lead to high power consumption,susceptibility to electromagnetic interference,and high transmission delays,which limits the future development of multicore processors.Compared with the electrical interconnected Network-on-Chip,the optical interconnected Network-on-Chip has gradually attracted the attention of scientific research institutions due to its advantages of large bandwidth,fast transmission speed,and low vulnerability to electromagnetic interference.However,the advantages of the optical on-chip network in the case of small data volume and short communication distance,it is not possible to make up for the consumption brought by the photoelectric conversion process and link configuration.Therefore,it is of great significance to combine the electrical interconnection network with the optical interconnection network and research the optoelectronic interconnection network.This paper focuses on researching the interface and routing controller of the photoelectric interconnection network.Designing the resource network interface and photoelectric interface of the photoelectric interconnection network,and designing the routing controller for link configuration and release.Based on the research of optoelectronic interconnection network,FPGA(Field Programmable Gate Array)is used as the platform to design the photoelectric interconnection network based on Mesh structure and realize the data transmission of the network.Firstly,the interface of photoelectric interconnection network is designed.The resource network interface is designed to analyze the routing information of the data packet,and then to determine the transmission mode of the resource node data packet.Secondly,the photoelectric interface is designed to realize the conversion between the optical signal and the electrical signal.The FPGA high-speed serial transceiver is used as the physical layer structure.The high-speed serial transceiver is interconnected and configured using the Aurora protocol to achieve Parallel-to-serial conversion of data.Finally,realize the photoelectric conversion interface by connecting SFP(Small Form-factor Pluggable).In addition,the routing controller is designed to implement link configuration and link release of the optical router to complete data transmission.The routing controller is divided into five control ports,the control module of the optical router,the occupation request processing module and the switch module.Design control port and switch for decoding and transmission of data packets,design optical router control module for saving and eliminating optical router control signals,design occupancy request module for judging the status of routing controller.Each module is designed using Verilog HDL,and the function simulation test of each module and the routing controller network is carried out on Modelsim.Finally,in order to verify the function of the photoelectric interconnection network system,this paper uses Xilinx's VC707 and VC709 development platform to verify the photoelectric interconnection network.Realize the transmission of data packets from the source resource node through the optical fiber to the destination resource node,and analyze the performance indicators such as data transmission delay,throughput,bit error rate,network power consumption,and resource consumption of the optoelectronic interconnection network.The test results show that the optoelectronic interconnection network has increased power consumption and resource consumption compared to the electrical interconnected Network-on-Chip,but the other performance indexes of the network have been greatly improved.