多核系统中NoC通讯架构的关键技术

摘要

In recent years, Multi-core architectures have been the mainstream design of the processors as well as the mainstream processing platform of various communication and multimedia applications. The communication structure becomes one of the core technologies of Multi-core processors. The efficiency of communication between the inter-core is the key indicator of Multi-core processor performance. There are three main types of communication ar- chitecture ： Bus system, Cross-bar network and On-Chip Network. Bus structure designs have the advantages of con- venience, low hardware consumption and low cost. Cross-bar design is suitable for the switching network structure of building large-capacity systems. On-Chip Network is larger and more sophysicated on-chip network, which can com- pletely solve the problem of Multi-core architecture and therefore becomes one of the most promising solutions for the Multi-core system. The paper discusses the principle, system structure and function of the NOC communication ar- chitecture and presents the realization of some units.%多核处理器已经成为处理器的主流，并发展成为各种通信与媒体应用的主流处理平台。通讯结构是多核系统中的核心技术之一，核问通信的效率是影响多核处理器性能的重要指标。目前有3种主要的通讯架构：总线系统结构、交叉开关网络和片上网络。总线结构设计相对方便、硬件消耗较少、成本较低；交叉开关是适合用于构建大容量系统的交换网络结构；而片上网络是更高层次、更大规模的片上网络系统，目前可以解决多核体系结构问题，是多核系统最有前途的解决方案之一。文中在分析了NoC结构的基本原理、系统结构和功能的同时，也提供了部分单元的设计实现。