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Digital design width CPLD Application and VHDL - Chapter 4

Introduction to PLDs and MAX PLUS II Trong ba chương đầu của cuốn sách này, chúng tôi kiểm tra các cổng logic và đại số Boolean. Những nền tảng cơ bản của mạch tổ hợp, cũng như các mạch logic tuần tự chúng tôi sẽ nghiên cứu trong một chương sau, hình thành các khối xây dựng cơ bản của nhiều kỹ thuật số mạch tích hợp (IC). , Quá khứ chẳng hạn kỹ thuật số IC đã được cố định trong các chức năng logic của họ, nó là không thể thay đổi thiết kế mà không thay đổi các chip trong một. | CHAPTER ll ll ll 4l l llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll Introduction to PLDs and MAX PLUS II OUTLINE CHAPTER OBJECTIVES 4.1 What is a PLD 4.2 Programming PLDs using MAX PLUS II 4.3 Graphic Design File 4.4 Compiling MaX PlUs II Files 4.5 Hierarchical Design 4.6 Text Design File VHDL 4.7 Creating a Physical Design Upon successful completion of this chapter you will be able to Describe some advantages of programmable logic over fixed-function logic. Name some types of programmable logic devices PLDs . Use Altera s MAX PLUS II PLD Design Software to enter simple combinational circuits using schematic capture. Use VHDL entity declarations architecture bodies and concurrent signal assignments to enter simple combinational circuits. Create circuit symbols from schematic or VHDL designs and use them in hierarchical designs for PLDs. Assign device and pin numbers to schematic or VHDL designs and compile them for programming Altera MAX7000S or FLEX10K20 devices. Program Altera PLDs via a JTAG interface and a ByteBlaster Parallel Port Download Cable. In the first three chapters of this book we examined logic gates and Boolean algebra. These basic foundations of combinational circuitry as well as the sequential logic circuits we will study in a later chapter form the fundamental building blocks of many digital integrated circuits ICs . In the past such digital ICs were fixed in their logic functions it was not possible to change designs without changing the chips in a circuit. Programmable logic offers the digital circuit designer the possibility of changing design function even after it has been built. A programmable logic device PLD can be programmed erased and reprogrammed many times allowing easier prototyping and design modification. The industry marketing buzz often refers to rapid prototyping and reduced time to