| 嵌入式视频处理EDMA数据存储 |
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| 引用本文： | 周礼庆.嵌入式视频处理EDMA数据存储[J].科技情报开发与经济,2011,21(12):112-113. |
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| 作者姓名： | 周礼庆 |
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| 作者单位： | 平朔工贸公司回收站,山西朔州,036801 |
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| 摘 要： | 嵌入式系统中内部RAM存储空间普遍较小,无法直接将视频处理系统处理的大量数据存储到内部RAM上,而增强型直接内存存取（EDMA）可独立于CPU进行后台批量数据传输,并行用于嵌入式视频处理系统快速数据交换。以嵌入式平台TMS320DM6446 DSP为例,详细介绍了如何使用EDMA优化数据存取的策略。
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| 关 键 词： | 数据存取 EDMA TMS320DM6446 视频处理 |
Embedded Video Processing for EDMA Data Storage |
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| ZHOU Li-qing.Embedded Video Processing for EDMA Data Storage[J].Sci-Tech Information Development & Economy,2011,21(12):112-113. |
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| Authors: | ZHOU Li-qing |
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| Institution: | ZHOU Li-qing |
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| Abstract: | The internal RAM storage space in embedded system is generally smaller, so the mass data processed in video processing system can't be directly stored into internal RAM. The enhanced direct memory access (EDMA) can be independent of CPU to make backstage batch data transmission and be paiallelly used in rapid data exchange in embedded video processing system. Taking the embedded platform TMS320DM6446 DSP as an example, this paper introduces in detail how to use the strategy for optimizing EDMA data access. |
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| Keywords: | data access EDMA TMS320DM6446 video processing |
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