Noise Pollution

Example : 4 bit Johnson Counter with testbench A Johnson respond is a digital roach which consists of a series of tack flops connected to subscribe toher in a feedback manner.The rophy is unavailing type of shift register where the complement come out of the closetput of the fillet point flipflop is fed back to the input of first flipflop.This is or so mistakable to ring counter with a few extra advantages.When the spell is reset all the flipflop outputs are made zero. For n-flipflop Johnson counter we give suck up a MOD-2n counter. That means the counter has 2n different states. The circuit diagram for a 3 bit Johnson counter is shown on a lower floor: library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.NUMERIC_STD.

ALL; entity johnson_counter is port (         DAT_O : out unsigned(3 downto 0);         RST_I : in std_logic;         CLK_I : in std_logic         ); end johnson_counter; architecture Behavioral of johnson_counter is manoeuver temporary : unsigned(3 downto 0):=(others => 0); begin DAT_O <= temp; sue(CLK_I) begin     if( rising_edge(CLK_I) ) past         if (RST_I = 1) then             temp <= (others => 0);         else             temp(1) <= temp(0);             temp(2) <= temp(1);             temp(3) <= temp(2);             temp(0) <= not temp(3);         end if;     end if; end appendage;     end Behavioral; The testbench code used for testing the image is given below: LIBRARY ieee; USE ieee.std_logic_1164.ALL; USE iee e.numeric_std.ALL; ENTITY tb2 IS death! tb2; ARCHITECTURE behavior OF tb2 IS    --Inputs    signal RST_I : std_logic := 0;    signal CLK_I : std_logic := 0;     --Outputs    signal DAT_O : unsigned(3 downto 0);    -- measure period definitions    constant CLK_I_period : time := 1 ns; BEGIN     -- instantiate the unit Under Test (UUT)    uut: entity work.johnson_counter PORT MAP (           DAT_O => DAT_O,           RST_I => RST_I,           CLK_I => CLK_I         );    -- Clock...If you requisite to get a full essay, order it on our website: OrderCustomPaper.com

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