基于TI6000系列DSP的多路信号采集系统

Multichannel Signal Sampling System Based on TI6000 Series DSP

提出一种新的方法更好地使外部器件通过SPI口与TI6000系列DSP(TMS320C621x/C671x/C64x)进行多路数据通讯。在提出的方法中,TI6000系列DSP(TMS320C621x/C671x/C64x)的McBSP工作在SPI模式时与外部器件的SPI接口通讯时,通过EDMA的配合可以实现连续的没有DSP程序中断的数据传输。示例给出了硬件电路和软件配置。

This paper put forward a new method to make the communication between external device and DSP from Tl6000 series （TMS320C621x/C671x/C64x） by SPI interface become better.in the method of this paper,when the McBSP of DSP from Tl6000 series （TMS320C621x/ C671x/ C64x） which works in the SPI mode communicates with SPI interface of external device,it can achieve continuous data transfers without DSP program interrupt through the cooperation of EDMA,The demon-stration in this paper gives us a detailed hardware circuit and work flow.The practical test indicates that the method in this paper is credible and can be applied in other situation.