Computer-Aided Design Techniques for Low Power Sequential Logic Circuits

Computer-Aided Design Techniques for Low Power Sequential Logic Circuits
Author: José Monteiro
Publisher: Springer Science & Business Media
Total Pages: 194
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 1461563194

Rapid increases in chip complexity, increasingly faster clocks, and the proliferation of portable devices have combined to make power dissipation an important design parameter. The power consumption of a digital system determines its heat dissipation as well as battery life. For some systems, power has become the most critical design constraint. Computer-Aided Design Techniques for Low Power Sequential Logic Circuits presents a methodology for low power design. The authors first present a survey of techniques for estimating the average power dissipation of a logic circuit. At the logic level, power dissipation is directly related to average switching activity. A symbolic simulation method that accurately computes the average switching activity in logic circuits is then described. This method is extended to handle sequential logic circuits by modeling correlation in time and by calculating the probabilities of present state lines. Computer-Aided Design Techniques for Low Power Sequential Logic Circuits then presents a survey of methods to optimize logic circuits for low power dissipation which target reduced switching activity. A method to retime a sequential logic circuit where registers are repositioned such that the overall glitching in the circuit is minimized is also described. The authors then detail a powerful optimization method that is based on selectively precomputing the output logic values of a circuit one clock cycle before they are required, and using the precomputed value to reduce internal switching activity in the succeeding clock cycle. Presented next is a survey of methods that reduce switching activity in circuits described at the register-transfer and behavioral levels. Also described is a scheduling algorithm that reduces power dissipation by maximising the inactivity period of the modules in a given circuit. Computer-Aided Design Techniques for Low Power Sequential Logic Circuits concludes with a summary and directions for future research.

Logic Circuit Design

Logic Circuit Design
Author: Shimon P. Vingron
Publisher: Springer Science & Business Media
Total Pages: 265
Release: 2012-03-28
Genre: Technology & Engineering
ISBN: 3642276571

In three main divisions the book covers combinational circuits, latches, and asynchronous sequential circuits. Combinational circuits have no memorising ability, while sequential circuits have such an ability to various degrees. Latches are the simplest sequential circuits, ones with the shortest memory. The presentation is decidedly non-standard. The design of combinational circuits is discussed in an orthodox manner using normal forms and in an unorthodox manner using set-theoretical evaluation formulas relying heavily on Karnaugh maps. The latter approach allows for a new design technique called composition. Latches are covered very extensively. Their memory functions are expressed mathematically in a time-independent manner allowing the use of (normal, non-temporal) Boolean logic in their calculation. The theory of latches is then used as the basis for calculating asynchronous circuits. Asynchronous circuits are specified in a tree-representation, each internal node of the tree representing an internal latch of the circuit, the latches specified by the tree itself. The tree specification allows solutions of formidable problems such as algorithmic state assignment, finding equivalent states non-recursively, and verifying asynchronous circuits.

Computer Aided Logical Design with Emphasis on VLSI

Computer Aided Logical Design with Emphasis on VLSI
Author: Frederick J. Hill
Publisher: John Wiley & Sons
Total Pages: 568
Release: 1993-02-11
Genre: Computers
ISBN:

Tied to no particular set of computer-aided logic design tools, it advocates the new emphasis in VLSI design. Includes support of layout synthesis from description in a register transfer level language as well as from design capture. Contains a detailed introduction to Boolean algebra, Karnaugh maps and sequential circuits. In this edition discussion of combination logic has been extended; switching circuits updated; a comprehensive treatment of test generation for VLSI included.

Computer Aided Logic Design

Computer Aided Logic Design
Author: Frederick J. Hill
Publisher:
Total Pages: 534
Release: 1993
Genre: Computer-aided design
ISBN: 9780471599876

Tied to no particular set of computer-aided logic design tools, it advocates the new emphasis in VLSI design. Includes support of layout synthesis from description in a register transfer level language as well as from design capture. Contains a detailed introduction to Boolean algebra, Karnaugh maps and sequential circuits. In this edition discussion of combination logic has been extended; switching circuits updated; a comprehensive treatment of test generation for VLSI included.

Practical Digital Logic Design and Testing

Practical Digital Logic Design and Testing
Author: Parag K. Lala
Publisher:
Total Pages: 440
Release: 1996
Genre: Computers
ISBN:

This text presents the essentials of modern logic design. The author conveys key concepts in a clear, informal manner, demonstrating theory through numerous examples to establish a theoretical basis for practical applications. All major topics, including PLD-based digital design, are covered, and detailed coverage of digital logic circuit testing methods critical to successful chip manufacturing, are included. The industry standard PLD programming language ABEL is fully integrated where appropriate. The work also includes coverage of test generation techniques and design methods for testability, a complete discussion of PLD (Programmable Logic Device) based digital design, and coverage of state assignment and minimization explained using computer aided techniques.

Principles of Modern Digital Design

Principles of Modern Digital Design
Author: Parag K. Lala
Publisher: John Wiley & Sons
Total Pages: 448
Release: 2007-09-10
Genre: Computers
ISBN: 0470125209

PRINCIPLES OF MODERN DIGITAL DESIGN FROM UNDERLYING PRINCIPLES TO IMPLEMENTATION—A THOROUGH INTRODUCTION TO DIGITAL LOGIC DESIGN With this book, readers discover the connection between logic design principles and theory and the logic design and optimization techniques used in practice. Therefore, they not only learn how to implement current design techniques, but also how these techniques were developed and why they work. With a deeper understanding of the underlying principles, readers become better problem-solvers when faced with new and difficult digital design challenges. Principles of Modern Digital Design begins with an examination of number systems and binary code followed by the fundamental concepts of digital logic. Next, readers advance to combinational logic design. Armed with this foundation, they are then introduced to VHDL, a powerful language used to describe the function of digital circuits and systems. All the major topics needed for a thorough understanding of modern digital design are presented, including: Fundamentals of synchronous sequential circuits and synchronous sequential circuit design Combinational logic design using VHDL Counter design Sequential circuit design using VHDL Asynchronous sequential circuits VHDL-based logic design examples are provided throughout the book to illustrate both the underlying principles and practical design applications. Each chapter is followed by exercises that enable readers to put their skills into practice by solving realistic digital design problems. An accompanying website with Quartus II software enables readers to replicate the book’s examples and perform the exercises. This book can be used for either a two- or one-semester course for undergraduate students in electrical and computer engineering and computer science. Its thorough explanation of theory, coupled with examples and exercises, enables both students and practitioners to master and implement modern digital design techniques with confidence.