The digital signal processor (DSP) performances highly in data processing and was widely used in embedded equipment As the core, it cooperates with lots of peripheral devices. The DSP chip has limited I/O ports and should focus on data processing, so a controller was designed utilizing complex programmable logic device (CPLD) to realize the coordinated control of peripheral resources, which accomplishes a data processing unit with data storage, communication and reset logic. This unit was applied to an ultrasonic converter to ensure its accurate sampling and data rapid processing.%数字信号处理器(DSP)以其数据处理功能强大的特点在嵌入式设备中得到广泛应用,作为设备数据处理核心的DSP,往往需要多种外设的协同工作.而DSP本身接口有限,且片内资源应尽量集中于核心运算功能,故需引入外部控制与协调模块.文中实现了一种基于复杂可编程逻辑器件(CPLD)的控制与协调模块,协助DSP芯片TMS320C6713进行逻辑控制和时序协调,从而实现具备完整存储、通讯、复位功能的数据处理单元,并应用于一个超声波流量检测系统,保证了系统的精确信号采样和高速数据处理.
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