Understanding SD, SDIO and MMC Interface
In this blog post i will present the gist of the paper http://www.kaltech.co.il/pdf/Eureka_sd_wp1.pdf , It's crucial for anyone willing to understand how removable devices like sd card work, different protocols/functionalities they support. Secure Digital (SD) memory card today, 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 in applications demanding optimum memory capacity, smaller size, and low end product cost. The combination of small foot print, lower cost and optimal performance contributed in SD-card's success. What is MultiMedia Card (MMC)? MMC and Sd-card share many common features and have the same physical and electrical specifications. The differences between the two standards are mainly on the software level commands. The similarities allow many hosts to accept both MMC and SD cards on ...
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