4.2.4.1 GPIO Pins/PPS Functions
Most of the WBZ35x Module pins can be configured as GPIOs pins or for PPS functionality. To find the functionality supported by each of these GPIOs, see I/O Ports and Peripheral Pin Select (PPS) from Related Links. The recommendation is to add a series resistor on the host board for all critical, high frequency pins and clocks for EMI considerations. The value of the series resistor depends on the actual pin configuration. The user must place these resistors close to the module. Example of Host Board on Top Layer illustrates the placement of the series resistor; see the Example of Host Board on Top Layer figure in the WBZ35x Module Routing Guidelines from Related Links.