SLAZ250Z October 2012 – May 2021 MSP430F5171
PORT Module
Functional
Setting PxSEL bit for XTAL pins
Setting the PxSEL bit of XIN pin does not disable the digital function of the XOUT pin (in non-bypass mode). The primary port function will still be active on the XOUT pin.
Set the PxSEL bit of XOUT pin explicitly to disable the port function of the XOUT pin.