基于CPU和FPGA/CPLD结构设计电子系统

介绍应用CPU和现场可编程逻辑阵列(FPGA)/复杂可编程逻辑器件(CPLD)结合设计电子系统的优势.基于AT89C51单片机系统实现FLEK10K的在线可重配置(ICR),PC机和AT89C51串行通信实现在线升级,PC机下载配置实现在线调试.采用直接数字频率合成(DDS)技术,实现波形发生器.应用电子设计自动化(EDA)技术,以FPGA/CPLD器件为核心,采用FPGA设计的DDS不仅可方便地实现各种比较复杂的调频、调相和调幅功能,而且具有良好的实用性.文中给出了系统的工作原理和设计方法.

Designing Electronic System Basing on CPU and FPGA/CPLD

The superiority of designing electronic system with CPU and FPGA/CPLD is introduced. This paper presents a realization of in circuit reconfiguration of FLEK10K based on AT89C51 single chip microcomputer. It also describes the in circuit upgrading with PC and AT89C51 in serial communication and the in circuit debuging with PC downloading. It also presents the realization of wave form generation with DDS technology. This design employs the EDA technology and takes FPGA/CPLD as its core.Not only it is convenient to realize frequency, phase and amplitude modulation but also it has good practicability .This article introduces the principle of DDS, and the method of design.