介绍一种以MCS51为核,加上FSK、DTMF、数字调制/解调等外围电路组成的控制系统。在类似控制系统中,如何满足系统要求且与MCS51微处理器兼容和如何减少系统面积是设计中的两大关键问题。通过分析MCS51的指令和时序关系,设计出具有自主知识产权的与MCS51兼容的微处理器,完成它与外围电路的集成和自测试电路的插入。该系统在FPGA和门阵列上分别进行了布局布线和后仿真,并通过了FPGA的原型样机测试。 Describes a MCS51 as the core, with FSK, DTMF, digital modulation / demodulation and other peripheral circuits composed of control system. In a similar control system, how to meet the system requirements and compatibility with the MCS51 microprocessor and how to reduce the system area are two key design issues. By analyzing the MCS51 instruction and timing relationship, designed with independent intellectual property MCS51-compatible microprocessors to complete its integration with peripheral circuits and self-test circuit insertion. The system in the FPGA and gate array were conducted on the layout and post-simulation, and passed the FPGA prototype prototype test.