【作者】 李建彬；

【导师】 蒋明；

【作者基本信息】 西安电子科技大学 ， 计算机应用技术， 2010， 硕士

【摘要】 随着半导体技术、设计技术的飞速发展,可以在单个芯片上集成多个IP模块。在单个芯片上,由于被集成的IP模块数量的不断增多,IP模块间的通信量就不断的增大,导致基于总线结构的片上系统设计方法将逐渐无法满足系统通信性能的要求。为了解决这些问题,类似于计算机网络通信的片上网络技术被提了出来,并成了当前的研究热点。片上网络技术主要体现在通信拓扑结构和路由技术两个方面,而路由技术又具体包含交换技术和路由算法。这些技术决定了片上网络中交换节点的功能和结构,因此,交换节点对片上网络IP模块间的通信起着非常重要的作用。本文的主要工作就是研究片上网络的拓扑结构和路由技术,并设计了交换节点。本文首先详细分析了片上网络的多种拓扑结构,指出它们的优点和不足,同时总结出拓扑结构的性能参数。在分析了交换技术和经典路由算法之后,针对簇网状拓扑结构,结合码分多址技术和确定性XY路由技术,提出了一种路由算法,并给出了该算法的详细流程。经过对扩展星型拓扑结构研究分析之后,决定在该拓扑结构上采用码分多址技术进行通信,本文采用其作为交换节点设计的基础。最后,设计了基于扩展星型拓扑结构、码分多址路由技术的交换节点。分析了调制和解调算法,阐述了各个模块的设计细节,给出了各个模块的仿真结果,证明了设计的正确性,同时,给出了关于平均吞吐量和平均延迟的仿真数据。更多还原

【Abstract】 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.更多还原