Analysis and evaluation method of communication performance of single chip microcomputer
This paper studies the analysis and evaluation methods of single-chip communication performance, points out the analysis method of the distribution parameters of the physical interface circuit and the combination selection method to ensure the correctness of the communication interface control performance firmware of the communication system. When evaluating the communication performance of the single-chip microcomputer, the parameters of the communication performance analysis of the single-chip microcomputer can be used. These parameters are bit throughput coefficient ξ, data transmission validity σ, and data recognition rate η. Using these parameters, the communication performance of the MCU can be quantitatively analyzed, and these parameters can also be used to select the MCU and design the application system. Keywords: MCU communication performance analysis Introduction A prominent feature of modern information network technology is that all the devices in the industrial control system 6 are connected into a network to work under a core software management (this software may be a distributed operating system,
It may also be an embedded operating system) that forms an organic whole. This modern networked industrial control system has the advanced nature unmatched by traditional independent control systems, which not only greatly improves the production efficiency of industrial equipment, but also greatly improves the safety and reliability of the system. At present, in order to realize a networked system, industrial equipment must appear in the system in the form of a network terminal, and such network terminals are mostly implemented by using a single chip microcomputer or digital signal processing. Due to the diversity and distribution of industrial control system equipment, the intelligent module mode microcontroller terminal has become the mainstream device control method. With the development of information and electronic technology, various industrial control system networks have been continuously improved, which has increasingly increased the requirements for the communication functions of single-chip microcomputers. Especially for the communication interface and communication protocol in various fieldbus technologies, new communication requirements are proposed: not only can adapt to a certain communication protocol, but also hope to become an intelligent terminal for automatic conversion of communication protocols. Therefore, whether the communication function of the MCU meets the design target requirements is a key issue in the design. In the application technology of single chip microcomputer, it is necessary to have a theoretical method for analyzing and evaluating the communication performance of the single chip microcomputer. Only in this way can the problem of evaluating and designing the communication performance of the single chip microcomputer be solved. The purpose of this paper is to present an analysis and evaluation method for the communication performance of single-chip microcomputer through research and discussion. This paper analyzes the communication interface of MCU from the two aspects of physical structure and firmware characteristics of MCU communication interface, and puts forward the parameters of physical analysis model of interface circuit and quantitative evaluation of communication characteristics.
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