基于ARM+FPGA的多路广播音频处理系统  

Multiplex Broadcasting Audio Processing System Based on ARM and FPGA

作　　者：张高健 杨刚[1] 杨霖[1] 张青青[1] 

机构地区：[1]中国传媒大学,北京100024

出　　处：《电声技术》2015年第12期68-70,83,共4页Audio Engineering

摘　　要：如今,越来越多的ARM+FPGA联合系统,被用来作为数字信号处理的硬件方案。但在这种系统应用的时候,实现ARM和FPGA这两种不同速率的硬件之间的高速通信,一直是重难点技术。为了解决这一问题,可以用到一种被称之为DMA(Direct Memory Access)的传输技术。这一技术不需要依赖于CPU的大量中断负载,就能实现异步数据的高速率传输。利用这一技术,在基于ARM+FPGA联合系统的基础上,可以实现具有多路广播音频实时采集和处理功能的硬件设备。Nowadays, more and more ARM and FPGA joint systems are used as digital signal processing hardware solu- tion. However, it has always been a difficult technology to realize the high-speed comnmnication between ARM and FPGA while the joint system is in the application. In order to solve this problem, a transmission technology called DMA （ Direct Memory Access） can be used. This technology can achieve the high-speed communication of asynchronous data transfer with- out a large number of interrupt loads. On the basis of the joint system ARM and FPGA, A hardware device including multicast audio real-time acquisition and processing functions can be realized with the DMA technology.

关 键 词：ARM FPGA DMA 高速通信 

分 类 号：TN91[电子电信—通信与信息系统]