面向嵌入式应用的DMA控制器的VLSI设计与实现

The VLSI Design and Implement of DMA Controller for Embedded Application

分析了DMA控制器在嵌入式系统中的应用需求,介绍了一种有实用价值的按软硬件协同方式工作的嵌入式DMA控制器,设计实现了一种由嵌入式软件触发的VLSI电路结构,基于DSP&CPU体系结构的MPEG—2算法仿真表明,该结构达到了很好的算法优化结果。可有效提高多媒体运算的速度,满足实时处理要求。

This paper analyzed the demand of DMA controller in embedded system and indicated the importance in transmitting data. We introduced a useful DMA controller, which cooperated with software and hardware. Here, a simple procedure controlled by software has been defined to enable CPU corc to drive DMA controller. The simulation of MPEG-2 based on DSP＆CPU architecture demonstrafed that the design could improve the algorithm significantly. The architecture could speed u Pmcdia calculation to meet real - time processing.