一种支持全双工数据传输的多通道DMA控制器设计  

Design of DMA Controller Supporting Full-duplex Data Transmission and Multi-channel

作　　者：石文侠 吴龙胜[1] 盛廷义[1] 艾刁 陈庆宇[1] 

机构地区：[1]西安微电子技术研究所,陕西西安710065

出　　处：《微电子学与计算机》2015年第2期76-79,83,共5页Microelectronics & Computer

摘　　要：针对DMA数据传输中读写操作互斥及互锁问题,本文提出了一种基于AHB总线的流水化DMA控制器设计方案.通过内嵌两个AHB主机和数据缓冲区,实现了数据读写操作并行;通过多通道设计,避免了读写访问不能同时结束时的额外传输等待时间,使读写操作更独立.该设计与现有的DMA控制器相比,缩短了数据传输延迟,提高了数据传输效率,实现了全双工流水传输.For the exclusive and interlocking problems in DMA data reading and writing operations,the DMA design scheme based on AHB bus is proposed.Read and write operations parallel execution is implemented by embedded two AHB masters and a data buffer.Multi-channel design which avoids the additional time wasted when read and write access can't end synchronously make the read and write operation more independent.Compared with the existing design of DMA controller,the design reduces the transmission delay and improves the speed of data transfer with achieving full-duplex streaming transmission.

关 键 词：全双工 多通道 DMA控制器 流水化 并行 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]