基于DSP的信号发生器的设计与实现

Design and Realization of Signal Generator Based on DSP

阐述了基于TMS320VC5402DSP实现信号发生器的设计原理和实现方法,详细介绍了所设计的信号发生器的硬件电路结构和程序设计流程图。该信号发生器可以产生任意复杂的波形,且信号的幅度和频率全部由DSP程序控制,易于修改,弥补了通常信号发生器模式固定、波形不可编程以及精度低的不足。此外,还运用了DSP的外部并行16位FLASH引导装载设计方法,通过在线FLASH编程,使得所设计的DSP目标系统成为一个独立的脱机运行系统,灵活性大大增强,使用也更加方便。

This paper expounds the design and realization of signal generator based on TMS320VC5402 DSP. The hardware circuit structure and the program flow charts are also given in this paper. Unlike the general signal generators which are often mode-fixed, it has unprogramable and low precision,this signal generator can generate complex waveforms,and the voltage and frequency of the signal generated by this signal generator are controlled by DSP programs which can be easily modified. In order to improve the independence of this DSP system and the flexibility of its application,the design of parallel boot （16 b） is also applied to the DSP system by in-system programming.