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.