基于FPGA的大规模矩阵开关设计

高效、可靠的矩阵开关模块是测试系统实现通用性的关键，本文介绍了一种基于FPGA的大规模矩阵开关设计方案。该设计采用FPGA作为实现控制逻辑的核心部件，采用单片机控制FPGA的配置和工作过程。文中给出了具体的硬件电路设计，重点介绍了单片机的软件设计思路和FPGA的内部编程实现。该方案具有开关规模大、成本低、通用性强等特点，可广泛应用于PXI等大规模测试系统中。

Design of Massive Switching Matrix Module Based on Field Programmable Gate Array (FPGA)

An efficient and reliable switching matrix module is the key point for the testing system to be universal.This paper introduces a scheme for designing massive switching matrix module used in PXI system.The module is controlled by serial port of industrial computer,and the control logic is realized by field programmable gate array(FPGA).This paper also gives out the concrete design of the hardware circuit,and lays stress on the introduction to the thought about the software design of single chip microcomputer and the implementation of FPGA interior program.The scheme have such features as large scale switching matrix module,lower cost,and higher generality.This module can be used widely in the large-scale testing system such as PXI.