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本文介绍了借助于8031单片机和IBM-PC微机设计高速数字信号处理(DSP)芯片TMS320C25仿真系统的基本原理。文中对TMS320C25仿真系统的总体逻辑框图、双端口RAM技术、切换控制电路、8031单片机与TMS320C25的总线管理电路等均作了详细论述。对8031单片机、IBM-PC微机与TMS320C25三者之间信息交换的方法亦进行了详细的讨论。根据本仿真系统的特点,介绍了系统管理软件的设计方法和技巧,给出了系统管理程序的总体框图。本系统已用于语音信号处理,并取得令人满意的结果。
This article describes the basic principles of designing a high-speed digital signal processing (DSP) chip TMS320C25 with 8031 MCU and IBM-PC microcomputer. In this paper, the overall logic diagram of TMS320C25 simulation system, dual-port RAM technology, switching control circuit, 8031 microcontroller and TMS320C25 bus management circuit are discussed in detail. The method of information exchange between 8031 MCU, IBM-PC microcomputer and TMS320C25 is also discussed in detail. According to the characteristics of this simulation system, the design methods and techniques of system management software are introduced, and the general block diagram of system management program is given. The system has been used for speech signal processing and achieved satisfactory results.