SLAS986D November 2014 – February 2018 AMC7836
For write operation the GPIO pin operates as an output. Writing a 1 to the GPIO-n bit sets the GPIO-N pin to high impedance. Writing a 0 sets the GPIO-n pin to logic low.
For read operations the GPIO pin operates as an input. Read the GPIO-n bit to receive the status of the GPIO-n pin.
The GPIO-n pin has 48-kΩ input impedance to IOVDD.