基于FPGA的程控数字交换网络设计

Design of Digital Switching Network Based on FPGA

数字交换网络在程控数字交换系统中占有重要的地位。其容量的大小、可靠性直接关系到整个系统的交换能力及系统的可靠性。目前在交换局中运行的程控交换设备,其数字交换网络大多采用专用芯片来实现,容量有限,扩展性差,成本较高。介绍一种采用FPGA技术实现的单芯片4K*4K容量的无阻塞交换网络设计,具有容量大、交换能力强、稳定可靠,成本低等优点,大大提升了交换网络的整体性能。

Digital switching network occupies an important position in the program controlled switching system. The size of its capacity and dependability relate to the exchange capability and the reliability of the whole system. Currently application-specific ICs are adopted in digital switching network, which have higher cost. Describes an application using FPGA in digital switching network. No-blocking 4k＊4k switching network is implemented with single chip FPGA, which has high stability, great capacity, low cost.