Design of a DMA Controller for Loss-less Image Processing

In this paper, we present a DMA (Direct Memory Access) controller to access data from the system memory on image processing system. The image data, which are processed in real time, have to be stored or read without loss of data in the memory. However, an embedded processor has a limit to directly process large amounts of the image data from camera sensor in real time. In order to resolve this limitation, DMAs are used in various systems. In this paper, we implement the DMA controller by using an FPGA and verify the functionality of the DMA controller in the system based on Avalon Memory Mapped interface. Also, the DMA controller is fabricated by using Magnachip/Hynix 0.35 um CMOS technology and operations of the fabricated DMA is verified.