3.2.4 Processor PIOs
This section describes all the signals connected to the SAMA7D6 Series MPU ports. Some of the ports are multiplexed to accommodate more devices on the board and to showcase multiple functions the SAMA7D6 Series MPU can address off a single PIO. Some of the ports that share multiple functions are split through passive resistors placed on the board as close to the MPU as possible, but are configured so that only one function is available at a time, requiring manual replacement of some resistors to access the alternate function.