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This commit is contained in:
Rémi Heredero
2021-11-24 10:50:51 +01:00
commit c7ba678fbb
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29
Cursor_test/hds/pulse@width@modulator_tester/test.vhd Normal file
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ARCHITECTURE test OF pulseWidthModulator_tester IS
constant clockPeriod: time := 50 ns;
signal sClock: std_uLogic := '1';
constant enPeriodNb: positive := 3;
signal sEn: std_uLogic := '0';
BEGIN
------------------------------------------------------------------------------
-- clock and reset
--
reset <= '1', '0' after clockPeriod/4;
sClock <= not sClock after clockPeriod/2;
clock <= sClock after clockPeriod/10;
------------------------------------------------------------------------------
-- control signals
--
amplitude <= to_unsigned( 64, amplitude'length),
to_unsigned(128, amplitude'length) after 10*256*enPeriodNb*clockPeriod,
to_unsigned(192, amplitude'length) after 20*256*enPeriodNb*clockPeriod;
sEn <= '1' after (enPeriodNb-1)*clockPeriod when sEn = '0' else '0' after clockPeriod;
en <= sEn;
END test;