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.

phyCORE-AM65x Power LEDs

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

Boot Settings

Reference Designator

Description

D10

VCC_5V0 Power Rail Indicator

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

  2. The VCC_5V0 supply rail is available at the Expansion Connector.

D11

VCC_3V3 Power Rail Indicator

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

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

  3. The VCC_3V3 supply rail is available at the Expansion Connector.

D12

VDD_3V3 Power Rail Indicator

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

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

  3. The VCC_3V3 supply rail is available at the Expansion Connector.

D13

VDD_5V0 Power Rail Indicator

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

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

  3. The VCC_5V0 supply rail is available at the Expansion Connector.

D14

VDD_12V0 Power Rail Indicator

  1. 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).

  2. The VDD_12V0 supply rail is available at the Expansion Connector.

Note

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

VDD_1V8 Power Rail

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

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

  3. The VDD_1V8 supply rail is available at the Expansion Connector.