第 1章數位系統設計概論

義守大學電機工程學系陳慶瀚

pierre@mail.isu.edu.tw

1. EDA & VHDL

1.1 Electronic Design Industry

Great challenges in electronic design industry:

─ Size and complexity of digital systems increase

─ Life-cycle of product decrease

─ cost down

─ functionalities increase

1.2 Digital System Design Process

1.3 Design Process

-> design idea->behavioral definition->flowchart/flow graph/pseudocode -> design of the system data path -> specifies the registers and logic units->implementation of data registers, busses, logic units, and their controlling hardware

->netlist of gates and flip-flops

->transformation of the netlist into a transistor list or layout ->manufacturing(FPGA or ASIC)

1.4 What is HDL

HDLs are used to describe hardware for the purpose of simulation, modeling, testing, design, and documentation of digital systems.

HDLs provide a convenient and compact format for the hierarchical representation of functional and wiring details of digital systems.

HDLs consist of a simple set of symbols and notations which replace schematic diagrams of digital circuits, as well as define the hardware at one or more levels of abstraction.

HDLs software tools includes compilers, simulators, testers, and hardware synthesis programs.

─ compiler is used for syntax and semantic verification,

─ simulation program can be used for functionalities verification,

─ synthesizer is used for automatic hardware circuit generation.

─ tester is a test generation program may depend on a hardware description language to provide a netlist format, test application test bench, and fault injection

1.5 VHDL for EDA

Electronic Design Automation(EDA) tools can help the designer with design entry, hardware generation, test sequence generation, documentation, verification, and design management

VHDL for EDA:

─ modeling

─ design

─ simulation

─ hardware synthesis

1.6 Hardware Modeling

‧Modeling tools available to a hardware engineer include paper and pencil, schematic capture programs, breadboarding facilities.

‧The newest and most promising of these tools are hardware description languages.

‧These modeling tools enable a hardware designer to model his circuit at many levels of abstraction for various design, analysis, and documentation purposes.

2. 數位系統設計

2.1 數位系統設計流程

2.2 數位系統設計方法論

2.3 數位系統設計範式

2.4 數位系統設計原則

2.5 使用 FPGA設計數位系統

2.6 數位系統設計演變史

結論