SD Standards Make Product Design Easier
The SD host controller specification manages both SD memory card standards and SDIO card standards. This simplifies host system and driver designs by using a standardized implementation that reduces product development time. It defines a standard register set to control SD memory card and SDIO card standards.
The specification also provides a sophisticated direct memory access function to achieve high-performance data transfers between SD standard host systems and memory cards. Largely because of hardware control, SD transfers data without having to rely on the CPU specifications.