5.2.4 Position Decoder

SAM E54 Xplained Pro has a header footprint for the position decoder module. The PDEC can be used for quadrature, hall, and counter decoding.

Info: External pull-ups are mounted on the three signal lines for use with passive quadrature encoders.
Table 5-6. PDEC Header
J407 pinSAM E54 pinFunctionShared functionality
1 [PHASE A]PC16PDEC QDI[0]EDBG GPIO0
2 [PHASE B]PC17PDEC QDI[1]EDBG GPIO1
3 [INDEX]PC18PDEC QDI[2]EDBG GPIO2 and User LED
4-GND-