3.5.1 Serial Debug COM Port
The SAMA7G54-EK board features a dedicated serial port for debugging, accessible through header J20. Various interfaces can be used as a USB/serial DBGU port bridge, such as the FTDI TTL-232R USB-to-TTL serial cable.
| PIO | Signal Name | Shared | Signal Description |
|---|---|---|---|
| PD17 | DBGU_RX_PD17 | DEBUG | Receive data |
| PD16 | DBGU_TX_PD16 | DEBUG | Transmit data |
Note: The use of a 6-pin header FTDI cable is
necessary to supply U23 with 5V in order to polarize the pull-up resistors R234 and
R235. If a 3-wire FTDI cable is used, a shortcut between VBUS_FTDI and VDD_3V3 is
necessary.