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This book provides the reader with an extensive background in the field of logic-timing simulation and delay modeling. It includes detailed information on the challenges of logic-timing simulation, applications, advantages and drawbacks. The capabilities of logic-timing are explored using the latest research results that are brought together from previously disseminated materials. An important part of the book is devoted to the description of the ?Degradation Delay Model?, developed by the authors, showing how the inclusion of dynamic effects in the modeling of delays greatly improves the application cases and accuracy of logic-timing simulation. These ideas are supported by simulation results extracted from a wide range of practical applications.Sample Chapter(s)
As digital integrated circuit size and complexity increases, the need for accurate and efficient computer simulation increases. Logic simulators such as SALOGS (SAndia LOGic Simulator), which utilize transition states in addition to the normal stable states, provide more accurate analysis than is possible with traditional logic simulators. Furthermore, the computational complexity of this analysis is far lower than that of circuit simulation such as SPICE. An eight-value logic simulation environment allows the use of accurate delay models that incorporate both element response and transition times. Thus, timing simulation with an accuracy approaching that of circuit simulation can be accomplished with an efficiency comparable to that of logic simulation. 4 figures.
This book constitutes the refereed proceedings of the 12th International Workshop on Power and Timing Modeling, Optimization and Simulation, PATMOS 2002, held in Seville, Spain in September 2002. The 37 revised full papers and 12 poster papers presented were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on arithmetics, low-level modeling and characterization, asynchronous and adiabatic techniques, CAD tools and algorithms, timing, gate-level modeling and design, and communications modeling and activity reduction.
Welcome to the proceedings of PATMOS 2005, the 15th in a series of international workshops.PATMOS2005wasorganizedbyIMECwithtechnicalco-sponsorshipfrom the IEEE Circuits and Systems Society. Over the years, PATMOS has evolved into an important European event, where - searchers from both industry and academia discuss and investigate the emerging ch- lenges in future and contemporary applications, design methodologies, and tools - quired for the developmentof upcominggenerationsof integrated circuits and systems. The technical program of PATMOS 2005 contained state-of-the-art technical contri- tions, three invited talks, a special session on hearing-aid design, and an embedded - torial. The technical program focused on timing, performance and power consumption, as well as architectural aspects with particular emphasis on modeling, design, char- terization, analysis and optimization in the nanometer era. The Technical Program Committee, with the assistance of additional expert revi- ers, selected the 74 papers to be presented at PATMOS. The papers were divided into 11 technical sessions and 3 poster sessions. As is always the case with the PATMOS workshops, the review process was anonymous, full papers were required, and several reviews were carried out per paper. Beyond the presentations of the papers, the PATMOS technical program was - riched by a series of speeches offered by world class experts, on important emerging research issues of industrial relevance. Prof. Jan Rabaey, Berkeley, USA, gave a talk on “Traveling the Wild Frontier of Ulta Low-Power Design”, Dr. Sung Bae Park, S- sung, gave a presentation on “DVL (Deep Low Voltage): Circuits and Devices”, Prof.
Este libro contiene las presentaciones de la XVII Conferencia de Diseño de Circuitos y Sistemas Integrados celebrado en el Palacio de la Magdalena, Santander, en noviembre de 2002. Esta Conferencia ha alcanzado un alto nivel de calidad, como consecuencia de su tradición y madurez, que lo convierte en uno de los acontecimientos más importantes para los circuitos de microelectrónica y la comunidad de diseño de sistemas en el sur de Europa. Desde su origen tiene una gran contribución de Universidades españolas, aunque hoy los autores participan desde catorce países
Abstract: "Symbolic timing simulation is an extension of general symbolic simulation that properly accounts for continuous real-valued delays through logic stages. We have recently demonstrated the simulator SirSim, which is based on an Elmore delay model, in the timing verification of full-custom circuitry. However, due to the close interaction between functionality and timing in some circuits, a more advanced timing model may be required simply to model functional behavior. We present an introduction to symbolic timing simulation, discuss several delay-dependent circuit examples, and show results in SirSim versus those from the unit-delay symbolic simulator COSMOS."
The growing awareness of the effects that simulation is having on the way we design our computing, communication, and control systems is leading to an increased demand for a better understanding of all aspects of simulation, ANSS'03 covers broad topics in the areas of distributed systems, network modeling, and advances in simulation methodology and practices.