Description: DM642上的DMA性能一个简单的介绍和分析。
DM642中的DMA称为EDMA（Enhanced Direct Memory Access）,其EDMA控制器支持64个相互独立的DMA通道，每个通道都可以接受系统外设事件的触发或者CPU的指令的触发，不同DMA传输之间还可以进行连接，构成各种复杂的DMA操作，在600MHz主频时可以提供2.4GB/秒的数据吞吐量。具备的1维、2维传输模式，非常适合图像的处理。
-DMA performance on the DM642 a brief introduction and analysis. DM642 The DMA called EDMA (Enhanced Direct Memory Access), the EDMA controller to support 64 independent DMA channels, each channel would be acceptable to all system peripherals, or trigger events trigger CPU instructions, different DMA transmission of can also be used for inter-connections, constitute a complex DMA operation, in the 600MHz frequency can provide 2.4GB/s data throughput. With the 1-dimensional, 2-dimensional transport model, very suitable for image processing. Platform: |
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Author:色度 |
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Description: 增强型直接内存存取(EDMA)是数字信号处理器(DSP)中用于快速数据交换的重要技术，具有独立于CPU的后台批量数据传输的能力，能够满足实时图像处理中高速数据传输的要求。以TI公司的TMS320DM642型DSP为例，介绍EDMA控制器的特点。结合实例给出EDMA在图像数据实时传输中的具体控制和实现方法。-Enhanced direct memory access (EDMA) is a digital signal processor (DSP) for fast data exchange in an important technology, independent of the CPU with the background bulk data transmission capability to meet the real-time image processing in high-speed data transmission requirements . To TI s DSP-based TMS320DM642 as an example, the EDMA controller characteristics. EDMA examples given in the image data in real-time transmission control and the achievement of specific methods. Platform: |
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Author:色度 |
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