Changes

<section begin="History" />

!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History

!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Version!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Issue Date!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes

|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|X1.Y0.Z0|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Month YearSep 2021|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|TBDFirst release

<section end="History" /><section begin="Body" />

The micro SD interface available on the Evaluation Kit at the connector J16, labelled as ''TBD:JxxxuSD''on the bottom.

''Jxx'' J16 is a ''TBD:connectorMicro-type'' SD card header connector for . This interface is connected to the RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console)USDHC2 controller of the i.MX8M Plus CPU.

 {| class="wikitable" ! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin name! latexfontsize="scriptsize"| Pin function! latexfontsize="scriptsize"| Pin Notes|-|1|J15.52|SD_DAT2|Data 2||-|2|J15.54|SD_DAT3|Data 3||-|3|J15.46|SD_CMD|CMD||-|4| -|VDD| +3.3 V|BOARD_PGOOD driven rail with 200mA fuse|-|5|J15.44|SD_CLK|Clock|

|1,2,4,6,,7,8,1012

| N.A.VSS| N.C.Ground| Not connected

| 37| J1J15.18948| RS232_RXSD_DAT0| Receive lineData 0|

| 38| J1J15.18750| RS232_TXSD_DAT1| Transmit lineData 1|

| 9, 10, 11

| DGNDSD_SHIELD| GroundShield||-|13|J15.42|SD2_CD_B|Card detect|

UART3 The microSD card is mapped to <code>/dev/ttymxc2mmcblk1</code> device in Linux. The peripheral is used available partitions are shown as the default serial console<code>/dev/mmcblk1p1</code>, <code>/dev/mmcblk1p2</code>, both for the bootloader and the kerneletc.

To connect to the debug serial port: # connect the DB9 adapter bracket to the J22 connector on the SBCX board# connect The device can be mounted/accessed as a serial cable between DB9 connector and PC COM port through a NULL-modem cable (not provided)# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1standard block device in Linux.