NCKU CSIE Wiki - Secure digital input/output interface (SDIO)
SDIO cards can be structured as 8 logical cards, although currently, the typical way that an SDIO card uses this capability is to structure itself as one I/O card and one memory card. SDIO bus topology 注意:若 Busy 信號被斷言 (SDIO_D0 pulled low),則 SDIO ......