Difference between revisions of "RIALTO SBC/Interfaces and Connectors/micro SD"

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<section end=History/>
 
<section end=History/>
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__FORCETOC__
 
<section begin=Body/>
 
<section begin=Body/>
  
 
==micro SD interface ==
 
==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  ===
 
=== Description  ===
  
−
The micro SD interface available on the Evaluation Kit at the connector ''TBD:Jxxx''.  
+
The SD interface is available on RIALTO SBC at the connector J43.
  
−
''Jxx'' is a ''TBD:connector-type'' header connector for the RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console).
+
J43 is a Micro-SD card header. This interface is connected to the SD1 controller of the i.MX6UL CPU.  
  
−
 
+
[[File:RIALTO_SBC-microSD-connector.png|thumb|center|500px|micro SD connector]]
−
[[File:{{{nome-som}}-EVB-micro SD-connector.png|thumb|center|500px|micro SD connector]]
 
  
 
===Signals ===
 
===Signals ===
  
 
The following table describes the interface signals:
 
The following table describes the interface signals:
−
 
+
{| class="wikitable"
−
{| class="wikitable"  
+
!Pin#
−
! latexfontsize="scriptsize"| Pin#
+
!Pin name
−
! latexfontsize="scriptsize"| SOM Pin#
+
!Pin function
−
! latexfontsize="scriptsize"| Pin name
+
!Pin Notes
−
! latexfontsize="scriptsize"| Pin function
+
|-
−
! latexfontsize="scriptsize"| Pin Notes
+
|1
 +
|SD_DAT2
 +
|Data 2
 +
|
 +
|-
 +
|2
 +
|SD_DAT3
 +
|Data 3
 +
|
 +
|-
 +
|3
 +
|SD_CMD
 +
|CMD
 +
|
 +
|-
 +
|4
 +
|3V3_IO
 +
| +3.3 V
 +
|
 +
|-
 +
|5
 +
|SD_CLK
 +
|Clock
 +
|
 +
|-
 +
|6, 11
 +
|DGND
 +
|Ground
 +
|
 
|-
 
|-
−
|1,2,4,6,,7,8,10
+
|7
−
| -
+
|SD_DAT0
−
| N.A.
+
|Data 0
−
| N.C.
+
|
−
| Not connected
 
 
|-
 
|-
−
| 3
+
|8
−
| J1.189
+
|SD_DAT1
−
| RS232_RX
+
|Data 1
−
| Receive line
+
|
−
|  
 
 
|-
 
|-
−
| 3
+
|9, 10
−
| J1.187
+
|PCB_GND_RNG
−
| RS232_TX
+
|Shield
−
| Transmit line
+
|
−
|  
 
 
|-
 
|-
−
| 9
+
|12
−
| -
+
|SD_DET
−
| DGND
+
|Card detect
−
| Ground
+
|
−
|  
 
 
|}
 
|}
  
 
=== Device mapping ===
 
=== Device mapping ===
−
UART3 is mapped to <code>/dev/ttymxc2</code> device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.
+
The microSD card is mapped to <code>/dev/mmcblk0</code>.
  
 
=== Device usage ===
 
=== Device usage ===
  
−
To connect to the debug serial port:
+
The device can be mounted/accessed as a standard block device in Linux.
  
−
# connect the DB9 adapter bracket to the J22 connector on the SBCX board
+
<section end=Body/>
−
# 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:RIALTO SBC]]
 
[[Category:RIALTO SBC]]

Latest revision as of 14:44, 12 January 2024

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History
Issue Date Notes
2024/01/12 First documentation release



micro SD interface[edit | edit source]

Description[edit | edit source]

The SD interface is available on RIALTO SBC at the connector J43.

J43 is a Micro-SD card header. This interface is connected to the SD1 controller of the i.MX6UL CPU.

micro SD connector

Signals[edit | edit source]

The following table describes the interface signals:

Pin# Pin name Pin function Pin Notes
1 SD_DAT2 Data 2
2 SD_DAT3 Data 3
3 SD_CMD CMD
4 3V3_IO +3.3 V
5 SD_CLK Clock
6, 11 DGND Ground
7 SD_DAT0 Data 0
8 SD_DAT1 Data 1
9, 10 PCB_GND_RNG Shield
12 SD_DET Card detect

Device mapping[edit | edit source]

The microSD card is mapped to /dev/mmcblk0.

Device usage[edit | edit source]

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


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