Understanding SD, SDIO and MMC Interface

    In this blog post, I will present a gist of the paper http://www.kaltech.co.il/pdf/Eureka_sd_wp1.pdf , (updated link). This is meant for anyone willing to understand how removable devices like sd card work and different protocols/functionalities they support. Secure Digital (SD) memory card is one of the most popular non-volatile removable data storage media for consumer applications. It’s not intended to remove hard-disk. Hard-disk can still deliver much better speed and memory capacity. SD card is used…

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