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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 資訊工程學系 > 期刊論文 >  Timing-driven soft-macro placement and resynthesis method in interaction with chip floorplanning


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/12820


    Title: Timing-driven soft-macro placement and resynthesis method in interaction with chip floorplanning
    Authors: Su,Hsiao-Pin
    Wu,Allen C. -H
    Lin,Youn-Long
    Date: 1999
    Publisher: Institute of Electrical and Electronics Engineers Inc
    Keywords: Integrated circuit layout
    Microprocessor chips
    Macros
    Systems analysis
    Computer hardware description languages
    Performance
    Gates (transistor)
    Quality control
    Abstract: In this paper, we present a complete chip design method which incorporates a soft-macro placement and resynthesis method in interaction with chip floorplanning for area and timing improvements. We present a performance-driven soft-macro clustering and placement method which preserves hardware descriptive language (HDL) design hierarchy to guide the soft-macro placement process. We develop a timing-driven design flow to exploit the interaction between HDL synthesis and physical design tasks. During each design iteration, we resynthesize soft macros with either a relaxed or a tightened timing constraint which is guided by the post-layout timing information. The goal is to produce area-efficient designs while satisfying the timing constraints. Experiments on a number of industrial designs ranging from 75-K to 230-K gates demonstrate that the proposed soft-macro clustering and placement method improves critical-path delays on an average of 22%. Furthermore, the results show that by effectively relaxing the timing constraint of noncritical modules and tightening the timing constraint of critical modules, a design can achieve 11% to 30% timing improvements with little to no increase in chip area.
    Relation Link: http://webservices.ieee.org/pindex_basic.html
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/12820
    Appears in Collections:[資訊工程學系] 期刊論文
    [積體電路設計技術研發中心] 期刊論文
    [清大/工研院聯合研究中心] 期刊論文

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