多功能数显电路PCB的设计.doc

摘 要 近几年，PCB技术从最初的单层板发展到双层板、多层板和挠性板，并不断地向高精度、高密度和高可靠性方向发展，而且这种技术在现代各个领域的应用也变得越来越广泛。 本设计结合多功能数显电路的基本原理，以Altera Cyclone系列的EP1C3T144器件为核心，在Protel 99 SE和QuartusⅡ两大平台下分别从硬件和软件两方面对电路进行设计。首先，在Protel 99 SE平台下根据电路原理从配置电路、I2C总线部分、电源部分、数码显示几个模块对电路进行详细的原理图设计，最后综合所有模块进而进行PCB的设计。同时设计中还对环境变量、参数设置、布局布线规则以及如何解决PCB设计中的抗干扰问题进行了简单的介绍。最后，本设计还在QuartusⅡ平台下利用VHDL完成了一简易数字钟的编写，对设计的多功能数显电路的印制电路板进行功能测试与验证。 关键字：PCB；Protel 99 SE；FPGA；EP1C3T144 Abstract In recent years, PCB technology is developing from the initial single board to double board, multilayer board and flexible board, and continue to the high-precision, high density and high reliability of direction, and this technology is becoming more widespread in modern fields. The design is combined with multi-functional digital circuit the basic principles, to EP1C3T144 Altera Cyclone series devices as the core, and finished the circuit from the hardware and software in Protel 99 SE and Quartus Ⅱ two platforms. First, the design is completed the detailed schematic circuit from configuration circuit, I2C bus parts, power part, the digital display several modules in Protel 99 SE platform, and finally integrated all the modules and then to PCB design. At the same time, the design is also introduced on the environment variable, parameter setting, placement and routing rules and how to resolve PCB design interference issues in brief. At last, the design is also completed a program of a simple digital clock using VHDL in Quartus Ⅱ platform, to test and verify the functional of the design of multi-functional digital circuit printed circuit board. Key words: PCB; Protel 99 SE; FPGA; EP1C3T144 目 录 1. 绪论 1 1.1 课题研究的背景与意义 1 1.2 国内外发展现状 2 1.3 印制电路板的发展趋势 3 1.4 课题的主要研究内容 4 2. 开发平台简介 5 2.1 Protel99 SE和其设计方法 5 2.1.1 Protel 99 SE介绍 5 2.1.2 Protel 99 SE设计方法 6 2.2 QuartusⅡ和其设计方法 7 2.2.1 Quartus II简介 7 2.2.2 Quartus II设计方法 8 3. FPGA与VHDL介绍 9 3.1 FPGA/CPLD简介 9 3.2 FPGA设计方法 9 3.3 VHDL设计技术 11 3.3.1 VHDL简介 11 3.3.2 利用VHDL设计硬件电路的方法 12 4. 多功能数显电路原理设计