This not only helps to find errors in structural design early, avoids the waste of design work, but also reduces the workload of logic function simulation and improves the one-time success rate of design. Using ASIC chip in EDA technology, it can be easily realized by mask ASIC, so the development risk is greatly reduced.
Hardware description language (HDL) is an important part of EDA technology. It is a type of language that describes the internal structure and signal connection of digital circuits in the form of text, similar to the general high-level language form and structural form of computers. Very high speed integrated circuit hardware description language (VHDL-VHSICHardwareDescriptionLanguage) has strong circuit description and modeling capabilities, can model and describe digital systems from multiple levels, thus greatly simplifying the hardware design tasks, using VHDL for electronic systems A great advantage of design is that designers can concentrate on the realization of their functions without the need to spend too much time and effort on process-related factors that do not affect the function. The hardware description language is used as a design input and library (Libraly). The designer defines the internal logic and pins of the device. Most of the work that was originally designed by the circuit board is done in the design of the chip. Due to the flexibility of pin definition, the workload and difficulty of circuit diagram design and circuit board design are greatly reduced, the design flexibility is effectively enhanced, and the work efficiency is improved. Moreover, the number of chips can be reduced, the system volume can be reduced, energy consumption can be reduced, and the function and reliability of the system can be improved.
EDA technology development trend and research direction: combine logic synthesis and layout technology to perform high-level synthesis. Layout research is developing in depth, and delay constraints, performance optimization, clock skew, and noise crosstalk have become factors that must be considered in layout algorithms. In the deep submicron process, the delay of the interconnect line has exceeded the delay of the gate, and the transmission line must be considered when simulating the electrical performance of the chip. Transmission line delay model, critical path delay estimation and time delay analysis are the focus of research in this field. The transmission line itself also promotes the development of simulation technology, in which the AWE (Asymptotic Waveform Evaluation) method and its improvement are effective methods for the simulation of interconnection lines. In addition, low-power design technology, the development of EDA tools for analog circuits, and software and hardware IP cores are also the future development direction of EDA technology.
Conclusion With the in-depth development of electronic technology and computer technology and the continuous progress and improvement of EDA design technology, the system-on-chip that integrates CPU, DSP memory and other control functions on a single chip is in high development. Future electronic technology development methods must be highly hierarchical, integrated, and automated. The emergence of new devices and the progress of new development methods are interdependent and mutually reinforcing. They will be continuously updated and improved with the development of science.
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