PoC.misc.FrequencyMeasurementΒΆ

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This module counts 1 second in a reference timer at reference clock. This reference time is used to start and stop a timer at input clock. The counter value is the measured frequency in Hz.

Entity Declaration:

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entity misc_FrequencyMeasurement is
  generic (
    REFERENCE_CLOCK_FREQ  : FREQ      := 100 MHz
  );
  port (
    Reference_Clock   : in  std_logic;
    Input_Clock       : in  std_logic;

    Start             : in  std_logic;
    Done              : out std_logic;
    Result            : out T_SLV_32
  );
end entity;