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提出了一种基于 PCI总线的数字下变频模块设计方案 ,它与商业化的 DSP处理板相结合 ,可以构成一个完整的多制式数字接收机。文中首先介绍它的总体结构 ,并分析了其中主要功能模块的工作原理 ,最后着重阐述全局控制器的设计与主控程序的工作流程。
A design scheme of digital down conversion module based on PCI bus is proposed. Combining with commercial DSP processing board, it can form a complete multi-system digital receiver. The paper first introduces its overall structure, and analyzes the working principle of the main functional modules, and finally focuses on the global controller design and master control program workflow.