Frequency measurement unit  
Model Name   FREQ(MIXED_SIGNAL)  
Symbol   No 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