SPRUJ85A April 2024 – August 2024
PRODUCTION DATA
The AM263Px LaunchPad provides a micro SD card interface that is mapped to the MMC0 instance of the AM263Px SoC.
A load switch (TPS22918TDBVTQ1) is used to power the micro SD card connector. The load switch is driven by the output of a 2-input AND gate between WARMRESETn and the SD Card enable GPIO (GPIO122) to power cycle the card upon reset. The load switch uses quick output discharge (QOD) to make sure that the supply voltage reaches <10% of nominal value during reset.
Inline ESD protection is provided for the MMC signals in the form of a six channel transient voltage suppressor device (TPD6E001RSER) and two channel transient voltage suppressor device (TPD2E001DRLR).
The Write Protect (WP) and Card Detect (CD) signals of the SD card connector are pulled up to the 3.3V System voltage supply.
A series termination resistor is provided for all MMC signals besides CD.