Power LEDs
==========

There are five green LEDs on the phyCORE-AM65x Carrier Board which indicate the presence of power on the various supply rails available. These LEDs are not user programmable and are present for hardware debugging purposes only.

.. image:: ../../images/phycore-am65x/pcm-067-pwr-leds.webp
   :width: 700px
   :alt: phyCORE-AM65x Power LEDs

The table below lists the LEDs and information about their corresponding power rails.

.. list-table:: Boot Settings
   :header-rows: 1

   * - Reference Designator
     - Description
   * - D10
     - VCC_5V0 Power Rail Indicator

       #. The Texas Instruments LM25119 dual output switching regulator (U10) powers the VCC_5V0 supply rail from the VCC_12V0 supply rail.

       #. The VCC_5V0 supply rail is available at the :ref:`expansion-65`.
   * - D11
     - VCC_3V3 Power Rail Indicator

       #. The Texas Instruments LM25119 dual output switching regulator (U10) powers the VCC_3V3 supply rail from the VCC_12V0 supply rail.

       #. The VCC_3V3 supply rail brings power to the SOM as the VCC_3V3_SOM supply rail.

       #. The VCC_3V3 supply rail is available at the :ref:`expansion-65`.
   * - D12
     - VDD_3V3 Power Rail Indicator

       #. The Texas Instruments TPS22965 load switch (U7) powers the VDD_3V3 power supply rail from VCC_3V3.

       #. The VDD_3V3 power supply rail powers most of the accessory circuits on the Carrier Board.

       #. The VCC_3V3 supply rail is available at the :ref:`expansion-65`.
   * - D13
     - VDD_5V0 Power Rail Indicator

       #. The Texas Instruments TPS22965 load switch (U6) powers the VDD_5V0 supply rail from VCC_5V0.

       #. The VDD_5V0 supply rail powers various accessory circuits on the Carrier Board.

       #. The VCC_5V0 supply rail is available at the :ref:`expansion-65`.
   * - D14
     - VDD_12V0 Power Rail Indicator

       #. The Dialog Semiconductor SLG59H1120V load switch (U2) powers the VDD_12V0  supply rail from the VCC_12V0 supply rail (VCC_12V0 is the filtered version of the input voltage from the main power input VIN_12V).

       #. The VDD_12V0 supply rail is available at the :ref:`expansion-65`.



.. note:: There is an additional 1.8V power supply rail that does not feature an indicator LED.

         **VDD_1V8 Power Rail**

          #. The Texas Instruments LP5912 DC-DC regulator (U9) powers the VDD_1V8 power supply rail from the VDD_3V3 power supply rail.

          #. The VDD_1V8 power supply rail powers various accessory circuits on the Carrier Board.

          #. The VDD_1V8 supply rail is available at the :ref:`expansion-65`.