基于FPGA的数字钟设计学院：电子信息工程学院专业：电子设计自动化班级：1班姓名：XXX学号：201210525XXX摘要伴随着集成电路技术的发展,电子设计自动化(EDA)技术逐渐成为数字电路设计的重要手段。基于FPGA的EDA技术的发展和应用领域的扩大与深入，使得EDA技术在电子信息，通信，自动控制，计算机等领域的重要性日益突出。本设计给出了一种基于FPGA的多功能数字钟方法，采用EDA作为开发工具，VHDL语言和图形输入为硬件描述语言，QuartusII作为运行程序的平台，编写的程序经过调试运行，波形仿真验证，下载到EDA实验箱的FPGA芯片，实现了设计目标。系统主芯片采用CycloneII系列EP2C35F672C8。采用自顶向下的设计思想，将系统分为五个模块:分频模块、计时模块、报时模块、显示模块、顶层模块。用VHDL语言实现各个功能模块,图形输入法生成顶层模块.最后用QuartusII软件进行功能仿真,验证数字钟设计的正确性。测试结果表明本设计实现了一个多功能的数字钟功能，具有时、分、秒计时显示功能，以24小时循环计时；具有校正小时和分钟的功能；以及清零，整点报时功能。关键词：EDA技术；FPGA；数字钟；VHDL语言；自顶向下AbstractAccompaniedbythedevelopmentofintegratedcircuittechnology,electronicdesignautomation(EDA)technologyisbecominganimportantmeansofdigitalcircuitdesign.FPGAEDAtechnologydevelopmentandexpansionofapplicationfieldsandin-depth,theimportanceofEDAtechnologyinthefieldofelectronicinformation,communication,automaticcontrol,computer,etc.havebecomeincreasinglyprominent.ThisdesigngivesaFPGA-basedmultifunctionaldigitalclockusingEDAasadevelopmenttool,VHDLlanguageandgraphicalinputhardwaredescriptionlanguage,theQuartusIIasaplatformforrunningtheprogram,writtenproceduresdebuggingandrunning,thewaveformsimulationdownloadedtotheFPGAchiptoachievethedesigngoals.ThemainsystemchipCycloneIIseriesEP2C35F672C8.Adoptedatopdwndesignideas,thesystemisdividedintofivemodules:frequencymodule,timingmodule,timermodule,displaymodule,thetop-levelmodule.WithVHDLvariousfunctionalmodules,graphicalinputmethodtogeneratethetop-levelmodule.LastQuartusIIundersimulation,toverifythecorrectnessofthedigitalclockdesign.Thetestresultsshowthatthedesignofamultifunctionaldigitalclock,withsecondstimedisplay,24-hourcycletiming;hasaschool,cleared,andthewholepointtimekeepingfunctions.Keywords:EDAtechnology;FPGA;VHDLlanguage;top-down;digitalclock目录1绪论.............................................................................................................................41.1研究背景..........................................................................................................41.2研究目的.........................................................................................................51.3研究方法和内容.............................................................................................52本软件开发环境.........................................................................................................52.1FPGA简介.....................................................................................................52.1.1FPGA概述.........................................................................................62.1.2FPGA基本结构....................................................................................6图2-1CLB基本结构...........................................................................................82.1.3FPGA系统设计流程...........................................................................82.1.4FPGA开发编程原理.......................................
