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在微处理器控制的模数模系统中,收,发双方怎样实现同步,不仅影响到系统工作的质量,也直接影响到系统的体积、成本和工作可靠性。文中所提出的实现同步的方案,是我们在一年多科研实践中总结出来的。文中应用了早已成熟的同步理论,简单论证了同步参数的选择,着重介绍了在微处理器控制的模数模系统中,起始点型同步怎样尽量用Z—80微处理器系统本身的硬件(PIO、CTC),特别是较强的软件功能来完成。详细论述了工作原理,程序流程图。介绍了利用统计原理和计数技术完成“软件锁相”的原理。本方案所用其它硬件极少,经过我们所研制的Z—80微处理器控制的实际系统的检验,证明是一种较佳的同步方案。
In the microprocessor-controlled analog-digital module system, how the receiving and sending parties synchronize not only affects the quality of the system work, but also directly affects the system’s size, cost and work reliability. The solution proposed in the article to achieve synchronization is what we summed up in more than a year of scientific research. This paper applies the already mature synchronization theory and simply demonstrates the choice of synchronization parameters. It mainly introduces how to use the Z-80 microprocessor system’s own hardware in the microprocessor-controlled analog-digital module system PIO, CTC), especially the stronger software function to finish. Discussed in detail the working principle, the program flow chart. Introduced the principle of using statistical principles and counting technology to complete the “software phase lock” principle. This program uses very few other hardware, after we developed by the Z-80 microprocessor control of the actual system test proved to be a better synchronization program.