单片机控制系统中实现DMA数据传送的方法

A method to perform DMA data transfer in a single-chip microcomputer control system

为实现单片机控制系统中高速数据的传送,应用接口扩展电路和DMA控制器,通过存储器扩展,在几乎不占用单片机资源的情况下,实现了单片机控制系统的DMA数据传送。该方法可用于软盘驱动器或高速采样的接口设计。

In order to transfer data with great speed in a singlechip microcomputer control system,the DMA circuit is designed with an interface circuit and a DMA controller.By extending the memory,the data can be transferred by DMA with little share in the singlechip microcomputer's resources.This method can be used to design the interface of a floppy disk driver or a highspeed sampling circuit.