6.5.5.1.3 Remappable Input Example

The following figure illustrates the remappable pin selection for the EXTINT0 input. In order to remap the EXTINT0 input to a particular pin, program the EXTINT0R remap register. EXTINT0 is in Group 1; therefore, it can be mapped to any pin that is in Group 1 (RPA3, RPA7, RPA9, RPA11, RPB0, RPB4, RPB8 and so on).

To map EXTINT0 to RPB0, program the value 4 (4’b0100) into the EXINTR0R SFR register. See the Input Pin Selection Group 1 table in the Input Mapping in PIC32CX-BZ3 Family of Devices from Related Links.

Figure 6-2. EXTINT0 Remappable Pin Selection

Note: For input only, PPS functionality does not have priority over TRISx settings. Therefore, when configuring the RPn pin for input, the user must configure the corresponding bit in the TRISx register for input (set to ‘1’).