Moore state Machine of 11 verilog program

The Moore state machine is a finite state machine whose output values depend on the current state.

The Moore state machine output will have the n+1 states for n inputs. For example, if the input has 2 states then it will produce 3 output states.

THE MOORE STATE MACHINE OF 11:

The Moore state machine for 11. It has three states S0, S1, S2. The output will be '1' when it enters to state S2 and the remaining state outputs are '0'.

PROGRAM:

// The inputs and outputs are declared here

module moore_sequence_11(input CLK,RST,DIN, output reg DOUT);

  

 parameter [1:0]S0 = 2'b00;

 parameter [1:0]S1 = 2'b01;

 parameter [1:0]S2 = 2'b10;

 

 reg [1:0]PS;

 reg [1:0]NS;

 

 // Moore state machine is designed using asynchronous

 always @(posedge CLK or negedge RST)

  begin

    if(RST)

      PS <= S0;

    else

      PS <= NS;

  end

    

  always @(PS, DIN)

  begin

    case(PS)

   

// For the state S0

   

      S0:if(DIN)

          begin

            NS = S1;

            DOUT = 1'b0;

          end

        else

        begin

          NS = S0;

          DOUT = 1'b0;

        end

// For the state S1

            

      S1:if(DIN) 

          begin

            NS = S2;

            DOUT = 1'b0;

          end

      else

        begin

            NS = S0;

            DOUT = 1'b0;

        end

// For the state S2

               

      S2:if(DIN)

          begin

            NS = S1;

            DOUT = 1'b1;

          end

        else

          begin

            NS = S0;

            DOUT = 1'b1;

          end

          

    endcase

  end   

endmodule 

OUTPUT WAVEFORM:

The output values are tested by forcing the input manually.

when the CLK input is high, rst is low, and based on din the output will be high. When the rst pin is high the output will be zero.

The input is given as 0,0,1,1,1,0.