Frequency measurement unit
Model Name	FREQ(MIXED_SIGNAL)
Symbol
Generics	Name   Type   Default   Unit   Description   THRESHOLD   real   0.0   V   threshold value for period measurement
Ports	Interface   Name   Type/Nature   Mode   Description   terminal   P_1   ELECTRICAL     terminal at pin 1   terminal   P_2   ELECTRICAL     terminal at pin 2   quantity   F_HZ   REAL   out   output frequency
Description	The test-bench shows how the current frequency of the input signal can be measured by a mixed-signal model. The distance in time between two successive crossings of a given threshold is measured.
Dependencies	Logical Library   Design Unit/Design Entity   IEEE_proposed   ELECTRICAL_SYSTEMS   IEEE   MATH_REAL
Source	See source code
Example	See test-bench