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FPGA-Based System Design by Wayne Wolf

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3 FPGA Fabrics

3.1 Introduction

In this chapter we will study the basic structures of FPGAs, known as fabrics. We will start with a brief introduction to the structure of FPGA fabrics. However, there are several fundamentally different ways to build an FPGA. Therefore, we will discuss combinational logic and interconnect for the two major styles of FPGA: SRAM-based and antifuse-based. The features of I/O pins are fairly similar among these two types of FPGAs, so we will discuss pins at the end of the chapter.

3.2 FPGA Architectures

elements of FPGAs

In general, FPGAs require three major types of elements:

• combinational ...

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