With the marketization of scientific research and technology development, it has become increasingly difficult to complete complex electronic system design in a short period of time using traditional electronic design methods. EDA (EleCTRonICs Design AutomaTIon) technology is an advanced, fast and effective electronic design automation tool with the rapid development of integrated circuits and computer technology. 1. EDA technology EDA (Electronic Circuit Design Station Automation) is based on computer as the working platform, hardware description language (VHDL) as the design language, programmable device (CPLD/FPGA) as the experimental carrier, and ASIC/SOC chip as the target device. Component modeling and system simulation electronics automation design process. EDA is a revolution in the field of electronic design, which is derived from computer-aided design, computer-aided manufacturing, computer-aided testing, and computer-aided engineering. Using EDA tools, electronic designers start designing electronic systems from concepts, algorithms, and protocols, from circuit design to performance analysis to IC layout or PCB layout generation. EDA represents the latest development direction of today's electronic design technology. Its basic feature is that designers use computer as a tool, according to the top-down design method, the whole system is designed and functionally divided, and the system description level is completed by hardware description language. Using advanced development tools to automate logic compilation, simplification, segmentation, synthesis, optimization, place and route, simulation, and specific target chip adaptation and program download, this is called a high-level design method for digital logic circuits. 1.1, EDA software introduction "EDA" is Electronic Design AutomaTIon, which helps people design electronic circuits or system software tools that make it possible to design more complex circuits and systems. Currently entering China and having a wide range of EDA software: muhisim7, OW_AD, Protel, Viewlogio, Mentor, Synopsys, PCBW Id, Cadence, MicmSim, etc. These softwares have their own characteristics, which are roughly divided into chip-level design tools and board-level design. Tools, programmable logic device development tools and circuit simulation tools, etc.; Protel is the most popular and widely used software for printed circuit board design in China. It is produced by Australian protd Technology and used to be used for schematics. Input and PCB layout design, starting with Protel 98, adding analog and digital hybrid circuit simulation module and programmable logic device design module. In 1999, Protel launched a more powerful EDA integrated design environment Protel 99, which integrates all EDA content into one. As a complete EDA software, the software has great potential, but its most distinctive and powerful features are still schematic input and PCB layout design. 1.2, the main content of EDA technology EDA technology covers a wide range of content, from the perspective of teaching and practical, it should mainly grasp the following four aspects: one is large-scale programmable logic device; the second is hardware description language; the third is software development tool; the fourth is experiment development system. Among them, the large-scale programmable logic device is the electronic system design carrier using EDA technology, the hardware description language is the main expression means of electronic system design using EDA technology, and the software development tool is the intelligent automatic design tool for electronic system design using EDA technology. The experimental development system is an electronic system design download tool and hardware verification tool using EDA technology. 1.3, main features of EDA technology 1.3.1, designing hardware using software design methods The hardware system conversion is automatically completed by the relevant development software. The design input can be the schematic VHDL language. The software design method is used to test the specific function hardware circuit design, and the hardware design modification work is as fast and convenient as modifying the software program. The process involves almost no hardware, and the operability and product interchangeability are strong. 1.3.2, based on chip design method The EDA design method, also known as the chip-based design method, has a higher degree of integration, enabling on-chip system integration, more complex circuit chip design and ASIC design, resulting in small size, low power consumption, and high reliability. In system programming or field programming, the device programming, reconstruction, and modification are simple and convenient, and online upgrade can be realized; various simulations can be performed, the development cycle is short, the design cost is low, and the design flexibility is high. 1.3.3, high degree of automation EDA technology automatically processes the electronic product from the circuit function simulation, performance analysis, optimization design to the result test according to the design input file, and automatically generates the target system, so that the designer does not have to learn a lot of in-depth professional knowledge, and can also be exempted. Many derivation operations can achieve optimized design results, high degree of design automation, reduced designer workload, and high development efficiency. 1.3.4, automatic product design EDA technology automatically performs logic compilation, simplification, synthesis, simulation, optimization, layout, routing, adaptation, and download programming to generate a target system based on a design input file (HDL or schematic) to simulate an electronic product from a circuit function. The whole process of performance analysis, optimization design and result testing is automatically processed on the computer.
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