.. _powerled-57:

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

The phyCORE-AM57x carrier board has five LEDs 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-am57x/pb-057948_pwrled.png
    :width: 650px
    :alt: Power LED Locations

.. image:: ../../images/phycore-am57x/pb-057948_pwrled-close-up.png
    :width: 350px
    :alt: Power LED Close Up

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

.. list-table:: Power Rail LED Indicators
   :header-rows: 1

   * - Reference Designator
     - Description
   * - D5
     - VDD_3V3 Power Rail Indicator

       * The Texas Instruments TPS22965 load switch (U11) powers the VDD_3V3 supply rail from the VCC_3V3 supply rail.

       * The VDD_3V3 supply rail is available at the Expansion Connector.
   * - D6
     - VDD_5V0 Power Rail Indicator

       * The Texas Instruments TPS22965 load switch (U8) powers the VDD_5V0 supply rail from the VCC_5V0 supply rail.

       * The VDD_5V0 supply rail is available at the Expansion Connector.
   * - D10
     - VDD_12V0 Power Rail Indicator

       * A MOSFET (U2) powers the VDD_12V0  supply rail from the VCC_12V0 supply rail.

       * The VDD_12V0 supply rail is available at the Expansion Connector.
   * - D22
     - VCC_5V0 Power Rail Indicator

       * The Texas Instruments TPS54531 switching regulator (U21) powers the VCC_5V0 supply rail from VIN_12V.

       * The VCC_5V0 supply rail is used for powering the SOM via the signal name VCC_5V0_IN.
   * - D23
     - VCC_3V3 Power Rail Indicator

       * The Texas Instruments TPS54531 switching regulator (U29) powers the VCC_3V3 supply rail from VIN_12V.

       * The VCC_3V3 supply rail is used for powering the SOM via the signal name VCC_3V3_IN.