基于FPGA的双采样A/D通用配置方案

航天产品可靠性要求高,继承成熟的设计是可靠性的保证措施之一。航天技术发展日新月异,元器件更新换代频率也越来越快,解决继承性和技术更新是航天产品研制面临的问题。相关双采样A/D是航天遥感相机视频处理器的核心器件,对视频成像系统性能起到了决定性作用,配置寄存器是双采样A/D工作的前提。提出了一种串行配置通用设计方案,实现不同配置时钟,配置码字等的通用性,适用于不同类型A/D和硬件电路变化,保证了FPGA设计代码的可继承性,对产品的可靠性有重要促进作用。

Solution of Double Sampling A/D general configuration based on FPGA

Currently,it has a high demand for developing the Space product, the inheritance of design, which is one of the factors of product＇s reliability,however,has become a contrA/Diction with the updating of chip. Correlated Douhle Sample A/D which has a decisive effect for video image system is an important device in Space remote sensing camera video processor. Register configuration is first step for A/D working correctly, therefore, this article comes up with a solution that is an A/D serial configuration general design which solved the problems of changing the device in practical application and the coming potential risks with the code updating because of the different design in hardware circuit,so that realizing the generality in the condition of different configuration clock and configuration code, which ensured the inheritability of the code in FPGA design,arid improved the reliability of our products greatly.