SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
An eMMC device typically requires two supplies: one for the core memory array (VCC) and one for the device interface I/Os and controller (typical VCCQ = 1.8 V). Both memory device supply pins can possibly be merged into one, thus requiring only one power supply.
Figure 32-21 shows an example of the system connection between the PMIC, memory device, and device.
Figure 32-21 eMMC ConnectionFor correct handling of eMMC boot partitions when using alternative boot operation mode, it is recommended to tie the eMMC RST_N signal to the signal indicating a platform warm reset (nRESWARM).
The ROM code performs the necessary I/O pin muxing configuration to route the MMC2 I/O signals on the eMMC pads depending on the selected SYSBOOT configuration.