摘要
结合1个基于ARM与DSP双核架构的声频数据采集系统的开发,介绍了ARM和DSP之间基于HPI通信的接口设计以及A/D、D/A接口设计,说明了接口工作原理及相关配置。提出了一种声频数据采集方案,利用ARM实现控制与人机交互,用DSP做信号处理,给出了数据采集的系统框图和软件流程图。该方案可充分利用DSP的McASP接口实现高精度A/D、D/A转换,利用HPI主机并行接口实现ARM与DSP之间的快速数据传输,从而实现海量声频数据流的高效、实时传输。
According to an audio data acquisition system, this paper introduces the communication interface design on the basis of HPI between ARM and DSP, and A/D,D/A converter design, describes the operating principle of interfaces and relevant configuration. A method of audio data acquisition is presented, control is based on ARM, DSP takes charge of signal processing,it provides the system chart of data acquisition and software flow chart. This design scheme can take full advantage of McASP interface to achieve high-precision AD ＆ DA converter,and HPI interface is used to realize high speed data transfer between ARM and DSP,thereby achieving efficient and real-time transmission of huge amounts of audio data stream.
出处
《电子测量技术》
2012年第10期102-106,共5页
Electronic Measurement Technology
基金
陕西省教育厅基金项目(11JK0548)
关键词
主机接口
DSP
ARM
数据采集
HPI （host port interface）
DSP
ARM
data acquisition
