VHDL

1

Digital Design Flow

CHAPTER OBJECTIVES

• Significance of CAD tools
• Design flow for circuit design
• Introduction to design tools
• Basics of HDLs

1.1 INTRODUCTION

With the growth in the integrated circuit technology, from large scale integration (LSI) to ultra large scale integration (ULSI), increasing the number of components on a chip with speed and power optimization, the designing of complex digital circuits has become a challenging task. Over the time, different methods of digital circuit design have come into picture like

1. Manual paper–pen method, and
2. Computer-aided design (CAD) tools method.

The manual paper–pen method for circuit design is now obsolete because of its incompetence to capture the complex designs at the basic as well ...