实时信号处理系统CPCI接口设计

新一代雷达的信号处理有实时性、通用性强的特点，该文给出了一种基于CPCI标准总线的实时信号处理系统，重点阐述了DSP和CPCI主机通信的接口设计。主机通过CPCI总线可以对DSP进行程序加载和运算结果的监测，充分利用了计算机资源。文中设计主要利用CPLD和桥接芯片PCI9656来实现，详细说明了PCI9656主从工作模式以及CPLD对PCI信号和局部信号的转换，最后给出了电路框图和时序仿真图。

Design of CPCI Interface for Real-Time Signal Processing System

Signal processing for new generation of radar has characteristics of real-time and general purpose. This paper gives a system of real-time signal processing based on Compact PCI bus, and pays emphasis on the design of interface between the DSP and Compact PCI host. The host can up load the programs to the DSP, inspects the result of DSP, and thus fully uses the resource of computer. This design is achieved through the PCI bridge chip PCI 9656 and CPLD. The paper describes in details the master and slave modes of PCI 9656, and signal conversion between PCI bus and local bus conducted by CPLD. At last, it gives the circuit diagram and scheduling picture.