乐曲硬件演奏电路eda设计.doc

摘 要 随着科学技术的飞速发展，微电子技术、集成技术和计算机技术也有了迅速的发展，电子系统的设计方法也随之发生变革，基于EDA技术的设计方法也成为现代电子系统设计的主流。大规模可编程逻辑器件FPGA/CPLD是当今应用最广泛的两类可编程专用集成电路（ASIC）。由于结构和工艺的改进，可编程ASIC芯片上包含的资源越来越丰富，可实现的功能越来越强，它已成为实现电子系统集成化的重要手段。特别是可编程逻辑器件的功能和容量的不断扩大，如FPGA(Field Programmable Gate Array，现场可编程门阵列)使集成电路的设计进入片上系统(System on a Chip，SOC)或可编程片上系统(System on a Programmable Chip，SOPC)的设计时代。同时采用超高速集成电路硬件描述语言VHDL (Very High Speed Integrated Circuit Hard—ware Description Language)，其具有多层次描述系统硬件功能的能力，既支持模块化设计，也支持层次化设计，使各种数字化电子系统的设计通过描述芯片功能实现系统功能，从而有效地缩短了产品开发周期，减少了设计芯片的数量，缩小了系统体积，降低了系统能耗，提高了系统的灵活性和可靠性。 关键词 FPGA, 音乐节拍发生器模块，音乐译码电路模块，数控分频模块 Abstract Technically fly to soon develop along with science, micro-electronics technique, integration technique and calculator technique also had a quick development and the design method of electronics system also immediately took place a change and also become modern main current of design of the electronics system according to the EDA technical design method.Large-scale and programmable FPGA/CPLD of the logic spare part is nowadays to apply two types of most extensive programmable appropriation integrated circuits(ASIC).Because of the improvement of structure and craft, include on the programmable ASIC chip of the resources be more and more abundant, can carry out of the function be more and more strong, it has become to carry out electronics system the integration turn of important means.Function and capacity of especially programmable logic spare part continuously extend and make the design of integrated circuit get into a slice of top system(the System on a Chip, SOC) or programmable slice the top system(a Programmable of the System on Chip, SOPC) such as the FPGA(the Gate Array of the Field Programmable, the spot programmable door array) of design ages.Adopt in the meantime extremely high soon the integrated circuit hardware describe language VHDL(the Circuit Description Language of the Hard-ware of the Speed Integrated of the Very High), it has the system hardware o