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

1,502 bytes removed, 14:09, 16 October 2020
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==micro SD interface ==
''TBD: sostituire le sezioni con le informazioni sull'uso della periferica e del suo connettore''
''Nell'esempio di seguito c'è la descrizione dell'interfaccia UART/console''
=== Description ===
The micro SD interface available on the Evaluation Kit at the connector ''TBD:Jxxx''J26.
''Jxx'' J26 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)USDHC1 controller of the i.MX6 CPU.
===Signals ===
! latexfontsize="scriptsize"| Pin Notes
|-
|1,2,4,6,,7,8,10|| J10.79 || SD_DAT2 || Data 1|| | -| N2 || J10.A.81 || SD_DAT3 || Data 3| N.C.| Not connected
|-
| 3| J1| J10.18983 || SD_CMD || RS232_RXCMD| Receive line|
|-
| 4 || - || 3V3 || +3| J1.187| RS232_TX3 V| Transmit line|
|-
| 95 || J10.85 || SD_CLK || Clock|| | -| 6, 12 || - || DGND|| Ground|| |-| 7 || J10.75 || SD_DAT0 || Data 0|| |-| 8 || J10.77 || SD_DAT1 || Data 1|| | Ground-| 9, 10, 11 || - || SD_SHIELD || Shield|| |-| 13 || J10.177 || EIM_D19 || Card detect||
|}
=== Device mapping ===
UART3 The microSD card is mapped to <code>/dev/ttymxc2mmcblk0</code> device in Linux. The peripheral is used available partitions are available as the default serial console<code>/dev/mmcblk0p1</code>, <code>/dev/mmcblk0p2</code>, both for the bootloader and the kerneletc.
=== Device usage ===
 
To connect to the debug serial port:
 
# connect the DB9 adapter bracket to the J22 connector on the SBCX board
# connect 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,8,1
----
[[Category:AXEL Lite]]
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