基于CPLD的高速音频数据采集系统的设计及实现

Design and Implementation of High Speed Data of Audio Frequency Gathering System Based on CPLD

介绍了在地下漏水探测仪中用CPLD实现高速音频数据采集控制及与单片机的接口逻辑设计.其中,总线接口,A/D采样控制,双端口RAM缓存,控制译码,时序逻辑电路均由CPLD实现.整个系统控制灵活,结构紧凑,体积小,功耗低,抗干扰能力强,适合于室外作业.

The gathering and controlling of high speed data of audio frequency by CPLD and the logic design of interface are introduced for underground water leakage detecting instrument .In this instrument, bus interface, controlling of sampling of A/D, double port RAM, controlling coding,timing logic circuit are all realized by CPLD. The characters of the system are flexible control, tight structure, small volume, low power,and high capability of antijamming.It is suitable for outdoor work. 