SPRUI97E May 2017 – September 2025
The SD/MMC connector on the AM571x IDK EVM is a MicroSD connector (part number SCHA5B0200). This is a standard SD/MMC card type of connector. It is connected to the MMC1 port of the AM571x processor that is optimized for this use. Refer to the AM571x Sitara Processors Silicon Revision 2.0 Data Manual (SPRS957) and the AM571x Sitara Processors Technical Reference Manual (SPRUHZ7) for supported card types and densities.
The SDWP input pin to the MMC1 port is connected to a 2-pin header, J44. The default state has the pin pulled high. Shorting the header pulls the pin low. The polarity of this input is programmable; thus, the hardware does not define whether a high or low level indicates Write Protest is active or not.
The transient protection implemented at the SDCARD connector is the TPD6E001.