摘要
介绍基于实时操作系统VxWorks和微处理器MPC860构建的多通道语音实时通信系统。MPC860负责完成语音通信、语音压缩、解压缩和IP封装、解封装。基于FPGA实现的通信控制器协调语音采集和回放模块同工作在QMC(多通道时分复用)模式的SCC(串行通信控制器)串口间的通信。针对实际软硬件环境定制BSP并开发了SCC串口的QMC驱动程序。
A multi- channel real- time voice communication system based on RTOS VxWorks and MPC860T is introduced in this paper. Voice communication, compression, decompression, IP encapsulation and decapsulation are accomplished by MPC860. A communication controller implemented by FPGA is used to handle the data transfer between speech acquisition and playback modules and Serial Communication Controler （SCC） working at QUICC Multi -channel Controler （QMC） mode. The BSP files are modified according to the specific software and hardware environment. The SCC QMC driver is developed.
出处
《现代电子技术》
2009年第15期122-125,130,共5页
Modern Electronics Technique
基金
广西自然科学基金资助项目(0832007Z)
