应用PCI总线的音频处理系统的设计

Design of the audio processing system by applications by PCI bus

讨论了一种关于音频调理的方法,由于该系统对传输要求比较高,所以系统的传输速度和效率都是很重要的性能指标,在系统的性能指标基础上,选定了PCI总线接口的方案,为简化电路,论文采用PLX公司的PCI9054芯片实现PCI接口,用FPGA实现FIFO数据缓存和本地总线控制逻辑,使通过音频处理后的声音信号通过声音编解码器出去。最后编写了该系统的驱动程序以及应用程序,达到了预期效果。

This paper discussed a kind of method about audio frequency adjusting.Since this system has high expectations for transmitted,so systematic transmission speed and efficiency are all very important performance indexes.According to systematic performance index,the authors selected the scheme of bus interface of PCI and adopted PCI9054 chip of PLX Company to realize PCI interface in order to simplify the circuit.Fintdly,by realizing FIFO data buffer memory and local bus control logic with FPGA,Writing driver and application program of system, the authors achieved anticipated result.