1.3.2.4 SAMD20 Xplained Pro

The following picture shows the SAMD20 Xplained Pro board connected to PL460-EK expansion board:

Figure 1-34. SAMD20 Xplained Pro + PL460-EK

PL460-EK is connected to XPRO Interface connector (EXT1) of SAMD20 Xplained Pro. A 15V DC jack must be plugged into PL460-EK in order to supply the power for PLC transmission. For more information about PL460-EK refer to its user guide.

PVdd Monitor functionality on this platform requires a change in resistors on PL460-EK to meet expected voltage levels at ADC input of SAMD20. For such reason, PVdd Monitor is disabled by means of APP_PLC_DISABLE_PVDDMON macro definition.
Figure 1-35. Resistors to be replaced on PL460-EK
The proper resistor values are already configured on MCC for provided projects.
Figure 1-36. Resistor Values configured on MCC
The USB connector of SAMD20 Xplained Pro can be used to:
  • Manage the PLC PHY Tx Test Console. UART baud-rate is configured at 115200 bps (it can’t be higher due to hardware limitations on this board).
  • Flash/debug the SAMD20 device with the on-board Jlink debugger

For more information about SAMD20 Xplained Pro refer to its user guide.