SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
Most peripherals can be reset and powered on or off by GPIO. By default, under POR, most device signals are in safe mode with a default value driven by the I/O cell. The value is driven by an internal pullup or pulldown. Depending on the peripheral reset active level, users must select one GPIO or another (according to the reset value).
Once POR is released, the value on the pad is driven by the default configuration of the device control module. Most of time, this configuration is aligned with the default value selected on the I/O cell.
The next step is application-dependent: Users must configure the device registers to validate GPIO use and the default configuration of the control module.