Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Texas Instruments/CC26x0/GPIO/DOUT19_16#0x0
Data Out 16 to 19
Alias register for byte access to each bit in DOUT31_0
DIO16
DIO17
DIO18
DIO19
https://github.com/cmsis-svd/cmsis-svd-data