Transistor Level Micro Placement And Routing For Two Dimensional Digital Vlsi Cell Synthesis
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Transistor Level Micro Placement And Routing For Two Dimensional Digital Vlsi Cell Synthesis
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Author : Michael Anthony Riepe
language : en
Publisher:
Release Date : 1999
Transistor Level Micro Placement And Routing For Two Dimensional Digital Vlsi Cell Synthesis written by Michael Anthony Riepe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Digital electronics categories.
The automated synthesis of mask geometry for VLSI leaf cells, referred to as the cell synthesis problem, is an important component of any structured custom integrated circuit design environment. Traditional approaches based on the classic functional cell style of Uehara & VanCleemput pose this problem as a straightforward one-dimensional graph optimization problem for which optimal solution methods are known. However, these approaches are only directly applicable to static CMOS circuits and they break down when faced with more exotic logic styles. Our methodology is centered around techniques for the efficient modeling and optimization of geometry sharing. Chains of diffusion-merged transistors are formed explicitly and their ordering optimized for area and global routing. In addition, more arbitrary merged structures are supported by allowing electrically compatible adjacent transistors to overlap during placement. The synthesis flow in TEMPO begins with a static transistor chain formation step. These chains are broken at the diffusion breaks and the resulting sub-chains passed to the placement step. During placement, an ordering is found for each chain and a location and orientation is assigned to each sub-chain. Different chain orderings affect the placement by changing the relative sizes of the sub-chains and their routing contribution. We conclude with a detailed routing step and an optional compaction step.
Direct Transistor Level Layout For Digital Blocks
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Author : Prakash Gopalakrishnan
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-01-16
Direct Transistor Level Layout For Digital Blocks written by Prakash Gopalakrishnan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-16 with Technology & Engineering categories.
Cell-based design methodologies have dominated layout generation of digital circuits. Unfortunately, the growing demands for transparent process portability, increased performance, and low-level device sizing for timing/power are poorly handled in a fixed cell library. Direct Transistor-Level Layout For Digital Blocks proposes a direct transistor-level layout approach for small blocks of custom digital logic as an alternative that better accommodates demands for device-level flexibility. This approach captures essential shape-level optimizations, yet scales easily to netlists with thousands of devices, and incorporates timing optimization during layout. The key idea is early identification of essential diffusion-merged MOS device groups, and their preservation in an uncommitted geometric form until the very end of detailed placement. Roughly speaking, essential groups are extracted early from the transistor-level netlist, placed globally, optimized locally, and then finally committed each to a specific shape-level form while concurrently optimizing for both density and routability. The essential flaw in prior efforts is an over-reliance on geometric assumptions from large-scale cell-based layout algorithms. Individual transistors may seem simple, but they do not pack as gates do. Algorithms that ignore these shape-level issues suffer the consequences when thousands of devices are poorly packed. The approach described in this book can pack devices much more densely than a typical cell-based layout. Direct Transistor-Level Layout For Digital Blocks is a comprehensive reference work on device-level layout optimization, which will be valuable to CAD tool and circuit designers.
Integrated Circuit And System Design
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Author : Enrico Macii
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-09-07
Integrated Circuit And System Design written by Enrico Macii and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-09-07 with Computers categories.
This book constitutes the refereed proceedings of the 14th International Workshop on Power and Timing Optimization and Simulation, PATMOS 2004, held in Santorini, Greece in September 2004. The 85 revised papers presented together with abstracts of 6 invited presentations were carefully reviewed and selected from 152 papers submitted. The papers are organized in topical sections on buses and communication, circuits and devices, low power issues, architectures, asynchronous circuits, systems design, interconnect and physical design, security and safety, low-power processing, digital design, and modeling and simulation.
Integrated Circuit Design Power And Timing Modeling Optimization And Simulation
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Author : Bertrand Hochet
language : en
Publisher: Springer
Release Date : 2003-08-02
Integrated Circuit Design Power And Timing Modeling Optimization And Simulation written by Bertrand Hochet and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-08-02 with Technology & Engineering categories.
The International Workshop on Power and Timing Modeling, Optimization, and Simulation PATMOS 2002, was the 12th in a series of international workshops 1 previously held in several places in Europe. PATMOS has over the years evolved into a well-established and outstanding series of open European events on power and timing aspects of integrated circuit design. The increased interest, espe- ally in low-power design, has added further momentum to the interest in this workshop. Despite its growth, the workshop can still be considered as a very - cused conference, featuring high-level scienti?c presentations together with open discussions in a free and easy environment. This year, the workshop has been opened to both regular papers and poster presentations. The increasing number of worldwide high-quality submissions is a measure of the global interest of the international scienti?c community in the topics covered by PATMOS. The objective of this workshop is to provide a forum to discuss and inves- gate the emerging problems in the design methodologies and CAD-tools for the new generation of IC technologies. A major emphasis of the technical program is on speed and low-power aspects with particular regard to modeling, char- terization, design, and architectures. The technical program of PATMOS 2002 included nine sessions dedicated to most important and current topics on power and timing modeling, optimization, and simulation. The three invited talks try to give a global overview of the issues in low-power and/or high-performance circuit design.
Proceedings
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Author :
language : en
Publisher:
Release Date : 1999
Proceedings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Integrated circuits categories.
Digest Of Technical Papers
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Author :
language : en
Publisher:
Release Date : 1999
Digest Of Technical Papers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Computer-aided design categories.
Proceedings
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Author : Asim Smailagic
language : en
Publisher:
Release Date : 2002
Proceedings written by Asim Smailagic and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Technology & Engineering categories.
This text contains information on the design and testing of computer hardware presented at the 2002 IEEE Computer Society Annual Symposium on VLSI.
Dissertation Abstracts International
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Author :
language : en
Publisher:
Release Date : 1999
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Dissertations, Academic categories.
Proceedings Of Technical Papers
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Author :
language : en
Publisher:
Release Date : 2005
Proceedings Of Technical Papers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Integrated circuits categories.
A Boolean Based Layout Approach And Its Application To Fpga Routing
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Author : Gi-Joon Nam
language : en
Publisher:
Release Date : 2001
A Boolean Based Layout Approach And Its Application To Fpga Routing written by Gi-Joon Nam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.