【正文】 存、使用畢業(yè)設(shè)計（論文）的規(guī)定，即：按照學校要求提交畢業(yè)設(shè)計（論文）的印刷本和電子版本；學校有權(quán)保存畢業(yè)設(shè)計（論文）的印刷本和電子版，并提供目錄檢索與閱覽服務(wù)；學?？梢圆捎糜坝　⒖s印 、數(shù)字化或其它復(fù)制手段保存論文；在不以贏利為目的前提下，學?？梢怨颊撐牡牟糠只蛉績?nèi)容。 本文介紹了基于 AT89C52 單片機及 ISD4004 語音板為主要部件的語音錄放電路的工作原理、硬件和軟件的設(shè)計。芯片設(shè)計是基于所有操作必須由微控制器控制 ,操作命令可通過串行通信接口 SPI 送入 。針對錄放系統(tǒng)的錄音、放音部分的總體設(shè)計方案進行了論證。 本次設(shè)計目是完成一個簡單方便，能可靠穩(wěn)定工作的語音錄放系統(tǒng)，該方案結(jié)構(gòu)簡單 ,控制可靠 , 便于推廣。s toys, so can make a speech broadcast machine. This paper introduces ISD4004 based on AT89C52 single chip puter and of the main parts of speech plate as the working principle of voice recording circuit and the design of hardware and software. ISD4004 series working voltage, monolithic 3V recording time 8 to 16 minutes, timbre, suitable for mobile phones and other portable electronics. Chip design is based on all the operation must by micro controller control, operation orders through serial munication interface SPI into. This paper summarizes the principle of voice recording circuit, and introduces the function of speech on the basis of recording system, puts forward the general structure of the system. Recording system for the recording, playback part of the overall design scheme is demonstrated. This paper introduces microcontroller AT89C52 single applications in system, the application system were analyzed each part of hardware and software realization. This design is to plete a reliable and stable working voice recording circuit. The design is simple in structure, reliable control and facilitate promotion. Keywords: ISD4004； 89C52microcontroller； voice recording and playback I 目 錄 引 言 ......................................................................................................................................... 1 第 1 章緒論 .................................................................................................................................. 2 系統(tǒng)設(shè)計的意義 ................................................................................................................... 2 系統(tǒng)設(shè)計的目的 ................................................................................................................... 2 系統(tǒng)采用的實現(xiàn)方法 .......................................................................................................... 3 第 2 章 單片機控制技術(shù)和開發(fā)環(huán)境介紹 ....................................................................... 4 89C52 單片機性能和 引腳介紹 ........................................................................................... 4 概述 ............................................................................................................................... 4 AT89C52 主要性能參數(shù) ................................................................................................. 4 引腳功能說明 ................................................................................................................. 4 KEIL開發(fā)環(huán)境和建立工程 .................................................................................................... 8 keil 簡介 .......................................................................................................................... 8 Keil 工程建立 ................................................................................................................. 8 ISD4004 介紹 ..................................................................................................................... 11 性能簡述和引腳圖 ....................................................................................................... 11 引腳描述 ....................................................................................................................... 11 SPI(串行外設(shè)接口 ) .......................................................................................................... 13 協(xié)議介紹 ....................................................................................................................... 13 信息快進 ...................................................................................................................... 14 上電順序 ....................................................................................................................... 14 SPI 端口的控制位 ........................................................................................................ 15 SPI 控制寄存器 ............................................................................................................ 16 時序 ............................................................................................................................... 16 第 3 章 系統(tǒng)總體設(shè)計 ........................................................................................................... 18 硬件電路設(shè)計 .................................................................................................................... 18 II 硬件電路圖 ................................................................................................................... 18 ISD4004 原理圖 ........................................................................................................... 18 軟件設(shè)計 ............................................................................................................................ 19 語音芯片的內(nèi)部信息尋址機制 ................................................................................... 19 監(jiān)控 ISD4004 錄音地址的實例 .........