BeagleBoard BeagleBone AI-64, System Reference Manual

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5.3. Power Management
The TPS65941213 and TPS65941111 power management device is used along with a separate LDO
to provide power to the system. The TPS65941213 and TPS65941111 version provides for the proper
voltages required for the LPDDR4. This is the same device as used on the original BeagleBone with
the exception of the power rail configuration settings which will be changed in the internal
EEPROM to the
TPS65941213 and TPS65941111 to support the new voltages.
5.4. PC USB Interface
The board has a USB type-C connector that connects the USB0 port to the processor. This is the same
connector as used on the original BeagleBone.
5.5. Serial Debug Ports
Two serial debug ports are provided on board via 3pin micro headers,
1. WKUP_UART0: Wake-up domain serial port
2. UART0: Main domain serial port
In order to use the interfaces a 3pin micro to 6pin dupont adaptor header is required with a 6 pin
USB to TTL adapter. The header is compatible with the one provided by FTDI and canbe purchased
for about 12 to 20 from various sources. Signals supported are TX and RX. None of the handshake
signals are supported.
5.6. USB1 Host Port
On the board is a single USB Type A female connector with full LS/FS/HS Host support that connects
to USB1 on the processor. The port can provide power on/off control and up to 1.5A of current at 5V.
Under USB power, the board will not be able to supply the full 1.5A, but should be sufficient to
supply enough current for a lower power USB device supplying power between 50 to 100mA.
5.7. Power Sources
The board can be powered from two different sources:
• A 5V ≥ 3A power supply plugged into the barrel jack.
• A wall adaptor with 5V ≥ 3A output power.
The power supply is not provided with the board but can be easily obtained from numerous
sources. A 5V ≥ 3A supply is mandatory to have with the board, but if there is a cape plugged into
the board or you have a power hungry device or hub plugged into the host port, then more current
may needed from the DC supply.
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