基于TMS320F2812的任意波形发生器设计

Design of arbitrary waveform generator based on TMS320F2812

为了能够方便地产生一些复杂具有特殊要求的、频率稳定的任意波形,本文提出了一种任意波形发生器的设计方法。完成了基于TI公司高性能DSP芯片—TMS320F2812和BB公司数模转换器——DAC7724的任意波形发生器设计,设计中使用TMS320F2812的外部扩展接口代替通用I/O口完成DAC7724的控制功能,详细叙述了设计方案、接口电路以及软件实现。实验结果表明,该任意波形发生器能够按照要求输出相应波形,达到了设计要求。

This paper introduced a way of the arbitrary waveform generator to produce the complex and special waveform with the stable frequency. In this paper, an arbitrary waveform generator is designed and implemented in this article based on TMS320F2812 and DAC7724. The control function of DAC7724 adopt exterior extendable interface based on TMS320F2812 to replace the current I/O. The scheme, the interface circuit and the software design are introduced particularly. At last, the results show that the arbitrary waveform generator can export the corresponding output waveform and reach the design requirement.