详细说明:sd卡的高速读写程序,sd模式(4数据线),是普通spi模式的约6倍,以及完全的sd卡的data sheet-sd card high speed read-write procedure, the sd pattern (4 data lines), are the ordinary spi pattern approximately 6 times, as well as complete sd card data sheet文件列表: sd_mem.c sd_mem.h SD_Simplified_Physical_Layer_Specification.pdf SD_Spec.pdf Simplified_SDIO_Card_Specification.pdf
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