Atmel SAM G55 Xplained Pro, User Manual

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Table 4-8. LED Connections
Pin on SAM G55 LED
PA06 Yellow LED0
4.2.4. USB
There is an USB available on the SAM G55 Xplained Pro board that can act as both host and device. It
has a micro usb connector with the silk screen TARGET USB.
Table 4-9. USB Connections
Pin on SAM G55 USB
PA22 DP
PA21 DM
PB02 USB ID
4.3. Embedded Debugger Implementation
The SAM G55 Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and
debug the ATSAMG55J19 using Serial Wire Debug (SWD). The Embedded debugger also provides a
Virtual Com port interface over UART, an Atmel Data Gateway Interface over UART and TWI, and it
monitors four of the SAM G55 GPIOs. Atmel Studio can be used as a front end for the Embedded
Debugger.
4.3.1. Serial Wire Debug
The Serial Wire Debug (SWD) uses two pins to communicate with the target. For further information on
how to use the programming and debugging capabilities of the EDBG, see the EDBG user guide.
Table 4-10. SWD Connections
Pin on SAM G55 Function
PB07 SWD clock
PB06 SWD data
PB05 SWD trace data
4.3.2. Virtual COM Port
The Embedded Debugger act as a Virtual Com Port gateway by using one of the ATSAMG55J19 UARTs.
For further information about using the Virtual COM port see the EDBG user guide.
Table 4-11. Virtual COM Port Connections
Pin on SAM G55 Function
PA28 UART TXD (SAM G55 TX line)
PA27 UART RXD (SAM G55 RX line)
4.3.3. Atmel Data Gateway Interface
The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using either UART or TWI.
The DGI can be used to send a variety of data from the SAM G55 to the host PC. For further information
about using the DGI interface see the EDBG user guide.
Atmel SAM G55 Xplained Pro [USER GUIDE]
Atmel-42389B-SAM-G55-Xplained-Pro_User Guide-04/2016
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