基于CK-Core的处理器SDIO接口主控制器设计

作为具有自主知识产权的国产嵌入式CPU核,CK-Core系列处理器核已广泛应用于嵌入式各领域。为满足基于CK-Core内核的处理器芯片的各类应用需求,需开发功能强大的芯片外围扩展接口。介绍了一种具有广阔应用前景的片外扩展接口,即SDIO接口。在分析了SDIO接口工作原理的基础上,开发了基于CK-Core的处理器SDIO接口主控制器IP核。利用RVM方法进行硬件RTL代码功能验证,通过CKSOC开发平台完成了FPGA原型验证,同时给出了DC综合结果。实验结果表明,该自行开发的IP核工作正常,性能良好,有效提高了CK-Core处理器的外围扩展能力。

Design of SDIO host controller of CK-Core based processor

As a domestic embedded CPU core of proprietary intellectual property rights,CK-Core has been widely used in various situations.In order to meet various application needs of CK-Core based processors,more powerful peripheral interfaces are required.A kind of peripheral extension interface was introduced,which has a bright future for application-SDIO interface.Based on the analysis of the SDIO specification,a SDIO Host Controller IP of CK-Core based processor was developed.The IP verification was done under RVM platform and also FPGA platform.The design was synthesized in Synopsys DC.The results indicate that this self-developed IP has been reasonably designed and works well,which improves the peripheral extension capability of the CK-Core based processor.