clk_to_phase :
A clock-to-phase domain translator.

The clk_to_phase primitive takes a periodic clock input in and produces an output signal out that expresses the phase of the clock according to the user-specified frequency (freq). The output signal is an xreal-typed, step signal which gets updated at each rising edge of the input clock.

The parameter phase_wrap controls whether the output is to be wrapped within a [-pi, pi) range (phase_wrap=1) or not (phase_wrap=0).

Input/Output Terminals

Name	I/O	Type	Description
out	output	xreal	phase output
in	input	xbit	clock input

Parameters

Name	Type	Default	Unit	Description
freq	real	1.0e9	Hz	nominal clock frequency
phase_wrap	integer	1	None	enable phase wrapping within [-pi, pi)