A multi-channel direct memory access dma controller

Abstract

The invention provides a multichannel direct memory access (DMA) controller which comprises a configuration module, an arbitration module, a read instruction generating module, a write instruction generating module, a bus high-speed carrying interface module and an externally-arranged request interface module. The multichannel DMA controller can carry complex-format data and increase data transmission rate so as to reduce burden of a CPU (central processing unit) and improve system performance.

Description

technical field [0001] The invention relates to the technical field of direct memory access (DMA, Direct Memory Access), in particular to a multi-channel DMA controller. Background technique [0002] The DMA controller is a necessary device in today's mainstream system-on-chip (SOC, System on Chip) systems and embedded systems. Its function is to replace the CPU to complete a large number of complex data handling processes without the intervention of the CPU to improve system efficiency. . [0003] With the development of the SOC system, the DMA controller in the prior art is often directly hung on the system bus, and its direct access to storage devices and I / O devices is completed through the bus. It generally has multi-channel work and can carry data in a certain format. function. With the increasing demand for data transfer, it is difficult for the DMA controller in the prior art to efficiently transfer a large amount of data between memories. Therefore, a DMA controll...

AI Technical Summary

Problems solved by technology

As the demand for data transfer continues to grow, it is difficult for existing DMA controllers to efficiently transfer large amounts of data between memories. Therefore, there is an urgent need for a DMA controller to improve the efficiency of transferring large amounts of data between memories.

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