本文第三章的主要内容是交叉开关交换。
第二章讨论了基于交叉开关的高速交换系统。
In Chapter two, we discuss crossbar based high-speed switching systems.
利用高性能数字交叉开关设计了高速路由结点。
A high speed routing node has been designed employing a high-performance digital cross-point switch.
交叉开关是无阻塞网络，允许所有可能的点对点间的同时连接。
Crossbar switch is unblock network, it allows all possible simultaneous connect from point to point.
由该远程计算机产生的视频信号通过该交叉开关被传输到该工作站。
Video signals produced by the remote computer are transmitted through the crosspoint switch to the workstation.
我们在单片FPGA中完成了6个端口、32位数据总线宽度交叉开关的设计。
We complete the design of crossbar switch with 6 ports and 32 bits data bus on one chip of FPGA.
交叉开关不但可以使得多个端口之间并行地进行信息的传递，也可以高效地进行一对多的多播传输。
Several pair of ports can exchange information simultaneously on crossbar fabric, and also one port can efficiently transfer messages to several other ports on it.
对于交叉开关机制的体系结构及该研究开展以来所提出的各种主要调度算法进行了对比分析和分类阐述。
In this article, the authors review the research of the switch fabric and scheduling algorithms for crossbar switch, and analyze these algorithms in detail.
接着从互连拓扑方式出发，系统地介绍了总线式、交叉开关式、开关枢纽式的不同系统结构及其内在联系。
Then the definite architectures of bus, interleare switch, switch hub types and interconnection are stated systematically from an interconnected topologic way.
利用现场可编程门阵列（FP GA）在光互连网络中实现了数据包的硬件路由以及数字交叉开关的动态配置。
With field programmable gate array(FPGA), hardware routing of data packages and dynamic configuration of digital crosspoint switch are realized.
利用现场可编程门阵列（FP GA）在光互连网络中实现了数据包的硬件路由以及数字交叉开关的动态配置。
With field programmable gate array(FPGA), hardware routing of data packages and dynamic configuration of digital crosspoint switch are realized.
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