ウェブTwo scenarios are possible using SDIO in SPI mode: Ł One SPI port (or the corresponding GPIO pins) is not used, and all four SPI signals (CLK, MISO, MOSI and SS) are tied directly to the SDHC™s CLK, CMD, DAT0, and DAT3 signals. In this scenario, the three tristate buffers are not required.
ウェブOverview. The SDIO Host Controller PSB provides connectivity between the application processor and an SD/SDIO/MMC card. The SDIO Host Controller PSB solution addresses the needs of handheld system designs.