【正文】 PLD design method. Key words: CPLD； MAX+PLUS II； Pseudorandom Code； m sequence code Generator 3 目 錄 前言 ................................................................................................................................ 6 1 課題介紹 .....................................................................................................................7 為什 么研究此課題 ............................................................................................7 偽隨機序列的應(yīng)用與意義 ..................................................................................................7 偽隨機序列的研究現(xiàn)狀 ......................................................................................................8 研究內(nèi)容 ..............................................................................................................................8 2 設(shè)計中使用芯片及 VHDL 語言介紹 ...........................................................................................9 CPLD芯片介紹 ...................................................................................................................9 概述 .............................................................................................................................9 MAX7000 特點 ..........................................................................................................9 EPM7128LC847......................................................................................................11 3 偽隨機序列介紹 ......................................................................................................12 偽隨機序列理論的發(fā)展史 .................................................................................................13 偽隨機序列的構(gòu)造方法 .....................................................................................................13 4 序列信號發(fā)生器原理 .............................................................................................. 14 序列信號發(fā)生器的設(shè)計 ................................................................................. 15 反饋移位型序列信號發(fā)生器 ...............................................................15 計數(shù)型序列碼發(fā)生器 ............................................................................ 18 5 移位寄存器 ............................................................................................................20 移位寄存器 .....................................................................................................20 寄存器 ...................................................................................................20 移位寄存器 ............................................................................................21 線 性反饋移位寄存器結(jié)構(gòu) ............................................................................22 D 觸發(fā)器 ................................................................................................22 D 觸發(fā)器工作原理 .......................................................................22 D 觸發(fā)器真值表 ...........................................................................23 特征方程 ......................................................................................23 狀態(tài)轉(zhuǎn)移圖 ..................................................................................23 時序圖 ...........................................................................................24 脈沖特性 ......................................................................................24 異或門 ....................................................................................................25 基本原理 ......................................................................................25 異或門邏輯符號 ..........................................................................25 邏輯表達式 ..................................................................................25 真值表 ..........................................................................................25 線性反饋移位寄存器 ....................................................................................26 什么是反饋移位寄存器 .....................................................................26 線性反饋移位寄存器 .........................................................................26 性質(zhì) ...................................................................................................26 6 偽隨機信號 ..............................................................................................................27 偽隨機信號 ...................................................................................................27 4 m序列碼發(fā)生器 ............................................................................................30 7 m序列性質(zhì) ...............................................................................................................33 均衡性 ...........................................................................................................33 .........................................................................................................33 移位相加性 ...................................................................................................33 相關(guān)特性 .......................................................................................................33 偽隨機特性 ...................................................................................................34 8 序列信號發(fā)生器的設(shè)計和仿真實現(xiàn) ...................................................................... 35 m序列生成單 元的電路設(shè)計 ......................................................................... 35 系統(tǒng)組成 ............................................................................................35 程序方框圖 ........................................................................................36 m序列發(fā)生器 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