In Pulse Frequency (PF) mode, the output becomes active on the rising clock edge
immediately following the overflow event, and goes inactive 1 to 128 clock periods
later, determined by the
PWS bits. This provides a pulsed output at the F
OVERFLOW
frequency. For more information, refer to the figure above.
Important: When the selected
pulse width is greater than the accumulator overflow time frame, then the NCO output
does not toggle.
The level of the Active and Inactive states is determined by the POL
bit.
PF mode is selected by setting the PFM bit.