Datasheet

769

SAM9G45 [DATASHEET]

Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15

Figure 35-6. SD Card Bus Connections with One Slot

Note: When several HSMCI (x HSMCI) are embedded in a product, MCCK refers to HSMCIx_CK, MCCDA to HSMCIx_CDA

MCDAy to HSMCIx_DAy.

When the HSMCI is configured to operate with SD memory cards, the width of the data bus can be selected in the

HSMCI SDCard/SDIO Register (HSMCI_SDCR). Clearing the SDCBUS bit in this register means that the width is

one bit; setting it means that the width is four bits. In the case of High Speed MultiMedia cards, only the data line 0

is used. The other data lines can be used as independent PIOs.

2345617

MCDA0 - MCDA3

MCCDA

MCCK

SD CARD