SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
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 34-21 shows an example of the system connection between the PMIC, memory device, and device.
For 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.