|  | MCUXpresso SDK API Reference Manual
    Rev. 0
    NXP Semiconductors | 
The MCUXpresso SDK provides drivers to access the Secure Digital Card(up to v3.0) ,Embedded MultiMedia Card(up to v5.0) and sdio card(up to v3.0) based on the SDHC/USDHC/SDIF driver. Here is a simple block diagram about the driver,
                ---------------------------
                |       Application       |
                ---------------------------
                            |
                            v
                ---------------------------
                |       Card driver       |
                ---------------------------
                            |
                            v
                ------------- -------------
                |host driver| |OSA adapter|
                ------------- -------------
                            |
                            v
                ----------------------------
                |  host controller driver  |
                ----------------------------
                            |
                            v
                ----------------------------
                |host controller peripheral|
                ----------------------------
                            |
                            v
                ----------------------------
                |          card            |
                ----------------------------