摘要
在DSP芯片中采用DMA技术,可将DSP从数据传输任务中解放出来,专门从事复杂的信号处理任务,提高系统整体性能。文中介绍一种高性能32位双通道可编程DMA控制器的设计,重点讨论了该DMA的主要功能、设计构思、控制单元及主要部分的电路实现。通过对具体电路的分析和讲解把相应功能模块进行了介绍。通过在Cadence(R)NC-verilog上的仿真结果检测了DMA工作正确性。
Adopting the technology of DMA in DSP chips, could liberate DSP from the assignment of the data transmission and let it engage in the task of complieated signal processing wholly, which could enhance the whole performance of system. Presents a programmable 2 - channel ＆ 32 - bit direct memory access controller with high performance in DSP. And it emphasizes on the discussion of the primary function, design concept, control unit and the circuit realization of the main part in DMA. And it introduces the corresponding function of module through the analysis and the explanation to the special circuits. Finally, the simulation result on Cadence（R） NC is used to detect the correctness of DMA felicitously.
出处
《计算机技术与发展》
2008年第3期36-39,共4页
Computer Technology and Development
