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AXEL ULite SOM/AXEL ULite Evaluation Kit/Interfaces and Connectors/micro SD

< AXEL ULite SOM‎ | AXEL ULite Evaluation Kit
History
Version Issue Date Notes
1.0.0 Jul 2021 First DESK release


Contents

micro SD interfaceEdit

DescriptionEdit

The micro SD interface available on the Evaluation Kit at the connector J13.

J13 is a Micro-SD card header. This interface is connected to the USDHC1 controller of the i.MX6UL CPU.

 
micro SD connector

SignalsEdit

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
J13.1 J1.79 SD_DATA2 Data 2
J13.2 J1.81 SD_DATA3 Data 3
J13.3 J1.83 SD_CMD CMD
J13.4 - 3V3 +3.3 V
J13.5 J1.85 SD_CLK Clock
J13.6, J13.12 - DGND Ground
J13.7 J1.75 SD_DATA0 Data 0
J13.8 J1.77 SD_DATA1 Data 1
J13.9, J13.10, J13.11 - SD_SHIELD Shield
J13.13 J1.177 UART1_nRTS Card detect

Device mappingEdit

The microSD card is mapped to /dev/mmcblk0. The available partitions are available as /dev/mmcblk0p1, /dev/mmcblk0p2, etc.

Device usageEdit

The device can be mounted/accessed as a standard block device in Linux.