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通过分析TMS320C2XX使用保持(HOLD)操作的直接存储器访问(DMA)和DMA控制器8237-5的工作原理,解决了DSP与8237-5的软、硬件接口问题,实现了DMA在数字化语言学习系统中的应用。
By analyzing the direct memory access (DMA) of the TMS320C2XX using the HOLD operation and the working principle of the DMA controller 8237-5, the hardware and software interface problems between the DSP and the 8237-5 are solved, and the DMA is implemented in the digital language learning system Applications.