NXP SD/SDIO/MMC/CE-ATA Host Controller Interface IC manages the physical
layer of SD, SDIO, MMC and CE-ATA protocols. Featuring a 16-bit asynchronous memory interface, the device can be used
with SD Host Standard compatible driver software to add
SD/SDIO/MMC/CE-ATA host functionality to a variety of microprocessor
systems. The device supports both full-speed (< 25 MHz) and high-speed (< 52 MHz) data transmissions on the SD/SDIO/MMC/CE-ATA port, and can operate in a wide voltage range (1.8 V to 3.6 V). SDIO101A's built-in, 2 kB data buffer provides a low interrupt latency time and efficient communication with the host processor at high data rates.