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研究生: 張劭鍇
Shao-kai Chang
論文名稱: 混合式加法器設計
Hybrid Adder Designs
指導教授: 魏慶隆
Chin-Long Wey
謝韶徽
Shao-Hui Shieh
口試委員:
學位類別: 碩士
Master
系所名稱: 資訊電機學院 - 電機工程學系
Department of Electrical Engineering
論文出版年: 2011
畢業學年度: 99
語文別: 中文
論文頁數: 44
中文關鍵詞: 混合式加法器前瞻進位加法器跳躍進位加法器平行預算加法器
外文關鍵詞: Parallel Prefix adder, Carry Skip Adder, Carry lookahead adder, Hybrid Adder
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  • 本論文提出一個快速的六十四位元加法器﹐使用動態的邏輯電路及傳輸閘的架構﹐應用於Brent-Kung Tree。此加法器為混合式的加法器架構,其採用前瞻進位單元和多工器且具有8個邏輯閘階層。由模擬結果顯示,混合加法器在最壞情況的延遲為298ps,而使用的製程技術為TSMC 0.18 um 2P6M CMOS technology,電源電壓為1.8伏特。同時我們也在其他的先進製程中模擬,模擬結果顯示,混合加法器在最壞情況的延遲為110ps,而使用的製程技術為UMC 90 nm 1P9M CMOS Low-K technology,電源電壓為1伏特。


    The thesis presents a fast 64-bit adder based on domino logics and pass transmission gates in the Brent-Kung Tree. The proposed adder uses a hybrid adder of Carry Look-Ahead and MUX architecture in 8 logic levels. Simulation results show that the proposed hybrid adder achieves a delay of 298ps, where the TSMC 0.18 um 2P6M CMOS technology with the supply voltage of 1.8V. Based on UMC 90 nm 1P9M CMOS Low-K technology with the supply voltage of 1V, the proposed 64-bit hybrid adder achieves a delay of 110ps with 6mW power dissipation.

    摘要 i Abstract ii 致謝 iii 圖目錄 vi 表目錄 viii 一、前言 1 1.1研究動機 1 1.2論文大綱 1 二、預備知識 2 2.1 Carry Look-Ahead Addition 2 2.2 Ling’s Adder 4 2.3 Parallel-Prefix (P-P) Addition 5 2.3.1 Kogge-Stone Tree 5 2.3.2 Brent-Kung Tree 6 2.3.3 Han-Carson 6 2.3.4 Sklansky 7 2.3.5 總結 7 2.4 Fan-out of 4 8 三、我們提出的加法器架構 10 3.1 回顧以前的加法器 10 3.2 新加法器的架構 10 3.2.1 Hybrid Adder Unit 12 3.2.2應用於六十四位元加法器 14 3.2.3進位的方式 16 3.2.4 新架構和可組態加法器 17 3.3 總結新架構的優點 21 四、電路設計 23 4.1 Domino Logics 23 4.2 Transmission Gates (MUX) 24 4.3 Critical Path and Driving Power 27 4.4 Floorplaning 30 五、模擬分析以比較 33 5.1模擬分析 33 5.2 Layout 33 5.3 比較 39 六、結論與未來工作 42 6.1結論 42 6.2未來工作 42 參考文獻 43

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