| With rapid development of semiconductor technology and design technology, the technology which integrates IP modules on a single chip is becoming more and more mature. As the increasing number of IP modules and frequency of communication on one chip, traditional SoC design methodology which is based on buses will not meet the requirement of the system communication performance. In order to solve these problems, NoC technology which likes the computer network was proposed, and the research about NoC becomes a hotspot now.The technology of NoC is characterized by two factors, the communication network topology and the routing technique. The routing technique includes routing algorithm and switch technique. These factors determine the function and architecture of the switch, so that the switch plays a important role on the communication of IP modules on one chip. In this thesis, we mainly research the NoC topology and routing technique, then follow the content of design the switch.In this paper, we research many NoC topologies in detail and point out the advantages and shortcomings of each topology and summarize their performance parameters. After studying the switch technique and classic routing algorithms, we combine CDMA technique with deterministic XY routing technique, then design a new routing algorithm for the cluster mesh topology, and describe the algorithm in detail. Through studying extended star topology and comparing with other topologies, we determine that all IP modules communicate with each other by CDMA technique on this topology, the topology becomes the basis for design of switch in this paper.Finally, we design a switch based on extended star topology and CDMA technique. After analyzing modulation algorithm and demodulation algorithm, we give the design details of each module and the results of simulation, the simulation results prove the correctness of the design. At the same time,we show the simulation data of the average throughput and the average delay. |
PDF Full Text Request