this control just output it's value in integers the same as the inputs or a normal frac32.s.map. The "fractioned" part is just the display that shows the corresponding pitch if you use the MTOFEXTENDED(..,..) code, which also outputs it's value in integers.
There are a couple of other controls that do use the MTOFEXTENDED(..,..) code inside their own behavior (eg. kdecay time as used in the AD-envelope), but these are again output as integers.
If you'ld want to set the pitch using hz, you should scale the value accordingly to get the integer value for incrementing the phase like: