3.2.6 PIO Branching Structure
Most PIO lines share multiple functions and are branched to multiple destinations through passive resistors on the SAM9X75 Curiosity Pro board.
CAUTION: To ensure flexibility during evaluation and to
avoid excluding any options prematurely, all resistors are installed during board
manufacturing. It is the end customer's responsibility to ensure that their
implementation and connections do not cause functional conflicts, for example, if
multiple branches are driven by more than one target device at a time. See the
illustration for the PIOA17/FLEXCOM4_IO1 net in the figure below.