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<section begin="History" />
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==Power Supply interface ==
=== Description ===
The Power Supply interface available on the Evaluation Kit at the connector ''TBD:JxxxJ3''.
[[File:{{{nomeORCA-som}}-EVBEVK-Power Supply-connector.png|thumb|center|500px|Power Supply connector]]
===Signals ===
{| class="wikitable"
! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin name! latexfontsize="scriptsize"| Pin function! latexfontsize="scriptsize"| Pin Notes|-|1,2,4,6,,7,8,10| -| N.A.| N.C.| Not connected
|-
| 3A4, A9, B4, B9| J1.189VBUS1| RS232_RX| Receive lineBoard supply
|
|-
| 3A1, A12, B1, B12| J1.187GND| RS232_TX| Transmit lineGround
|
|-
| 9| -| DGND| GroundA6, A7, B6, B7, A2, A3, B10, B11, B2, B3, A10, A11, A5, B5, A8, B8
|
| USB signals
| See [[ORCA SOM/ORCA Evaluation Kit/Interfaces and Connectors/USB ports|USB ports]]
|}
=== Device mapping Power LED ===UART3 DL2 is mapped to <code>/dev/ttymxc2</code> device in Linuxa green LED (placed near the reset button) that shows the status of the power input. The peripheral This LED is used as the default serial console, both for the bootloader ON when a valid power supply is present and the kernelsystem is out of reset.
=== Device usage ===
The USB-C PD protocol starts providing 5V to the system, this voltage is enough to boot the CPU and execute the bootloader.
The bootloader starts the PD handshake with the wall adapter and chose the input rail voltage between 5V, 9V, 12V, 15V or 20V.
By default the Evaluation Kit sets the input to 12V for LCD backlight compatibility, see the [[ORCA SOM/ORCA Evaluation Kit/Interfaces and Connectors/LVDS|LVDS section]] for more details.
=== Alternate supply ===
An auxiliary connector is present on the board (not mounted by default) to power the system with a standard power supply.
This connector is meant for developing purpose (eg when the SW is not already able to handshake a valid PD profile) and cannot be mounted for some Evaluation Kit models.
==== Description ====
Power can be provided through the J20 connector. Power voltage range is +[12-24 V].
J20 is a two pins MC 1,5/2-G-3,81 Phoenix connector.
[[File:ORCA-EVK-J20-Power_Supply-connector.png|thumb|center|500px|J20 Power Supply connector]]
====Signals ====
{| class="wikitable" ! latexfontsize="scriptsize" | Pin# 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! latexfontsize="scriptsize" | Pin name! latexfontsize="scriptsize" | Pin function! latexfontsize="scriptsize" | Pin Notes|-modem cable (not provided)# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,|1| VIN_AUX| Board supply| +[12-24 V]|-|2| GND| Ground| |}
----
[[Category:ORCA SOM]]