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Verilog HDL
Digital Design and Modeling




ISBN 9781420051544
Published February 20, 2007 by CRC Press
920 Pages - 796 B/W Illustrations

 
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Book Description

Emphasizing the detailed design of various Verilog projects, Verilog HDL: Digital Design and Modeling offers students a firm foundation on the subject matter. The textbook presents the complete Verilog language by describing different modeling constructs supported by Verilog and by providing numerous design examples and problems in each chapter. Examples include counters of different moduli, half adders, full adders, a carry lookahead adder, array multipliers, different types of Moore and Mealy machines, and much more. The text also contains information on synchronous and asynchronous sequential machines, including pulse-mode asynchronous sequential machines.

In addition, it provides descriptions of the design module, the test bench module, the outputs obtained from the simulator, and the waveforms obtained from the simulator illustrating the complete functional operation of the design. Where applicable, a detailed review of the topic's theory is presented together with logic design principles, including state diagrams, Karnaugh maps, equations, and the logic diagram.

Verilog HDL: Digital Design and Modeling is a comprehensive, self-contained, and inclusive textbook that carries all designs through to completion, preparing students to thoroughly understand this popular hardware description language.

Table of Contents

PREFACE

INTRODUCTION
History of HDL
Verilog HDL
IEEE Standard
Features
Assertion Levels

OVERVIEW
Design Methodologies
Modulo-16 Synchronous Counter
Four-Bit Ripple Adder
Modules and Ports
Designing a Test Bench for Simulation
Construct Definitions
Introduction to Dataflow Modeling
Two-Input Exclusive-OR Gate
Four 2-Input AND Gates With Delay
Introduction to Behavioral Modeling
Three-Input OR Gate
Four-Bit Adder
Modulo-16 Synchronous Counter
Introduction to Structural Modeling
Sum-of-Products Implementation
Full Adder
Four-Bit Ripple Adder
Introduction to Mixed-Design Modeling
Full Adder
Problems

LANGUAGE ELEMENTS
Comments
Identifiers
Keywords
Bidirectional Gates
Charge Storage Strengths
CMOS Gates
Combinational Logic Gates
Continuous Assignment
Data Types
Module Declaration
MOS Switches
Multiple-Way Branching
Named Event
Parameters
Port Declaration
Procedural Constructs
Procedural Continuous Assignment
Procedural Flow Control
Pull Gates
Signal Strengths
Specify Block
Tasks and Functions
Three-State Gates
Timing Control
User-Defined Primitives
Value Set
Data Types
Net Data Types
Register Data Types
Compiler Directives
Problems

EXPRESSIONS
Operands
Constant
Parameter
Net
Register
Bit-Select
Part-Select
Memory Element
Operators
Arithmetic
Logical
Relational
Equality
Bitwise
Reduction
Shift
Conditional
Concatenation
Replication
Problems

GATE-LEVEL MODELING
Multiple-Input Gates
Gate Delays
Inertial Delay
Transport Delay
Module Path Delay
Additional Design Examples
Iterative Networks
Priority Encoder
Problems

USER-DEFINED PRIMITIVES
Defining a User-Defined Primitive
Combinational User-Defined Primitives
Map-Entered Variables
Sequential User-Defined Primitives
Level-Sensitive User-Defined Primitives
Edge-Sensitive User-Defined Primitives
Problems

DATAFLOW MODELING
Continuous Assignment
Three-Input AND Gate
Sum Of Products
Reduction Operators
Octal-To-Binary Encoder
Four-To-One Multiplexer
Four-To-One Multiplexer Using The Conditional
Operator
Four-Bit Adder
Carry Lookahead Adder
Asynchronous Sequential Machine
Pulse-Mode Asynchronous Sequential Machine
Implicit Continuous Assignment
Delays
Problems

BEHAVIORAL MODELING
Procedural Constructs
Initial Statement
Always Statement
Procedural Assignments
Intrastatement Delay
Interstatement Delay
Blocking Assignments
Nonblocking Assignments
Conditional Statement
Case Statement
Loop Statements
For Loop
While Loop
Repeat Loop
Forever Loop
Block Statements
Sequential Blocks
Parallel Blocks
Procedural Continuous Assignment
Assign . . . Deassign
Force . . . Release
Problems

STRUCTURAL MODELING
Module Instantiation
Ports
Unconnected Ports
Port Connection Rules
Design Examples
Gray-To-Binary Code Converter
BCD-To-Decimal Decoder
Modulo-10 Counter
Adder/Subtractor
Four-Function ALU
Adder and High-Speed Shifter
Array Multiplier
Moore-Mealy Synchronous Sequential Machine
Moore Synchronous Sequential Machine
Moore Asynchronous Sequential Machine
Moore Pulse-Mode Asynchronous Sequential
Machine
Problems

TASKS AND FUNCTIONS
Tasks
Task Declaration
Task Invocation
Functions
Function Declaration
Function Invocation
Problems

ADDITIONAL DESIGN EXAMPLES
Johnson Counter
Counter-Shifter
Universal Shift Register
Hamming Code Error Detection and Correction
Booth Algorithm
Moore Synchronous Sequential Machine
Mealy Pulse-Mode Asynchronous Sequential Machine
Mealy One-Hot Machine
BCD Adder/Subtractor
BCD Addition
BCD Subtraction
Pipelined RISC Processor
Instruction Cache
Instruction Unit
Decode Unit
Execution Unit
Register File
Data Cache
RISC CPU Top
System Top
Problems

APPENDIX A Event Queue
Event Handling for Dataflow Constructs
Event Handling for Blocking Assignments
Event Handling for Nonblocking Assignments
Event Handline for Mixed Blocking and Nonblocking
Assignments

APPENDIX B Verilog Project Procedure

APPENDIX C Answers to Selected Problems
Overview
Language Elements
Expressions
Gate Level Modeling
User-Defined Primitives
Dataflow Modeling
Behavioral Modeling
Structural Modeling
Tasks and Functions
Additional Design Examples

INDEX

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