Method and device for dispersing converged DMA (Direct Memory Access)
A technology of decentralized aggregation and DMA controller, which is applied in the field of data transmission to achieve the effect of saving internal storage resources and meeting storage requirements
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[0037] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and implementation manners.
[0038] In the embodiment of the present invention, the distributed and aggregated DMA method and device, the CPU stores the DMA linked list in a storage unit outside the FPGA, and the DMA controller reads the DMA linked list from the storage unit after obtaining the bus control right from the CPU, and According to the DMA linked list, the data stored in the external memory is transferred to the video memory or the internal memory, thereby saving the internal storage resources of the FPGA and meeting the storage requirements of the larger DMA linked list of complex applications.
[0039] DMA data transmission does not require the participation of the CPU, and is a more efficient data transmission meth...
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