3.5 PIO Usage on Expansion Connectors

This section describes the signals and connectors related to the PIO usage on expansion connectors.

The baseboard includes numerous peripherals. Many of these are connected to the GPIO block so that the I/O pins can be configured to carry out many alternative functions. This provides great flexibility to select a function multiplexing scheme for the pins that satisfy the interface need for a particular application.

Note that most pins are configured as GPIO inputs, with a 100 Kohm pull-up resistor, after reset.