19.6.2.7 Changing the Clock Frequency
The selected source for a Generator can be divided by writing a division value in the Division Factor bit field of the Generator Control register (GENCTRLn.DIV). How the actual division factor is calculated on the Divide Selection bit (GENCTRLn.DIVSEL).
If GENCTRLn.DIVSEL=0 and GENCTRLn.DIV is either 0 or 1, the output clock will be undivided.
Note: The GCLK
Generator source input clock, defined by GENCTRLx.SRC, can be divided as defined in
GENCTRLx.DIV.