HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/PELLION/VHD_Lib Files · lib/lpp/general_purpose/lpp_AMR/Clock_multi.vhd

Correction de la FSM qui regule les données entrant dans la FFT

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(MINI-LFR) WFP_MS-0-1-67 (LFR-EM) WFP_MS_1-1-67 JC

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             Clock_multi.vhd
        
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      -- Clock_multi.vhd

      library IEEE;

      use IEEE.std_logic_1164.all;

      use IEEE.numeric_std.all;

      --! Compteur utilise en diviseur de frequence

      entity Clock_multi is

      port( 

          clk,raz     : in std_logic;                     --! Horloge 25Mhz et reset du systeme

          pulse       : in std_logic;                     --! Reset local

          N           : in integer range 4 to 25_000;     --! La valeur MAX du compteur

          clk_var     : out std_logic);                   --! Horloge obtenu en sortie

      end Clock_multi;

      --!@details Il permet a partir de l'horloge en entree, d'obtenir un horloge en sortie de frequence plus faible

      architecture ar_Clock_multi of Clock_multi is

      signal clockint : std_logic;

      signal countint : integer range 0 to 15_000;

      begin 

          process (clk,raz)

          begin

              if(raz='0' or pulse='1')then

                  clockint <= '0';

                  countint <= 0;

              elsif(clk' event and clk='1')then

                  if(countint = N/2-1)then 

                      countint <= 0;

                      clockint <= not clockint;

                  else 

                      countint <= countint+1;

                  end if;

              end if;

          end process;

      clk_var <= clockint;

      end ar_Clock_multi;

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				-- Clock_multi.vhd
				library IEEE;
				use IEEE.std_logic_1164.all;
				use IEEE.numeric_std.all;

				--! Compteur utilise en diviseur de frequence

				entity Clock_multi is

				port(
				clk,raz : in std_logic; --! Horloge 25Mhz et reset du systeme
				pulse : in std_logic; --! Reset local
				N : in integer range 4 to 25_000; --! La valeur MAX du compteur
				clk_var : out std_logic); --! Horloge obtenu en sortie

				end Clock_multi;

				--!@details Il permet a partir de l'horloge en entree, d'obtenir un horloge en sortie de frequence plus faible
				architecture ar_Clock_multi of Clock_multi is

				signal clockint : std_logic;
				signal countint : integer range 0 to 15_000;

				begin
				process (clk,raz)
				begin
				if(raz='0' or pulse='1')then
				clockint <= '0';
				countint <= 0;
				elsif(clk' event and clk='1')then
				if(countint = N/2-1)then
				countint <= 0;
				clockint <= not clockint;
				else
				countint <= countint+1;
				end if;
				end if;
				end process;

				clk_var <= clockint;

				end ar_Clock_multi;