基于PCI9656控制芯片的DMA传输设计  

DMA Transmission Design Based on PCI9656 Controller Chip

作　　者：张际生[1] 谭钦红[1] 黄俊[1] 徐沛[1] 

机构地区：[1]重庆邮电大学信号与信息处理重点实验室,重庆400065

出　　处：《电光系统》2012年第1期57-61,共5页Electronic and Electro-optical Systems

摘　　要：PCI总线现已成为工业控制计算机应用的主流总线结构，本文在分析PCI9656控制芯片特性和DMA传输机制的基础上给出了PCI总线上实现DMA数据高速传输的方法，该传输方法是PCI设备驱动程序的重要组成部分。设计采用Linux嵌入式系统作为开发平台，并借助系统提供的操作函数，降低了设备驱动程序的开发难度，缩短了开发和调试周期。PCI bus has become the mainstream of industrial control computer bus. This paper proposes a high speed DMA data transmission method on PCI bus based on the analysis of PCI9656 control chip and DMA trans- mission mechanism. The transmission method is also an important part of PCI device driver. Linux-embedded system is used as the development platform, and with the aid of system operation function, the development difficulty is reduced and the cycle of development and debugging is shortened.

关 键 词：PCI9656 LINUX PCI总线 DMA 驱动 

分 类 号：TN215[电子电信—物理电子学]