Subversion Repositories cic_core

module downsampler

/*********************************************************************************************/

#(parameter dw = 8, r = 4)

/*********************************************************************************************/

(

    input   clk,

    input   reset_n,

    input   [dw-1:0] data_in,

    output  reg [dw-1:0] data_out,

    output  reg dv

);

/*********************************************************************************************/

reg [$clog2(r)-1:0] counter;

/*********************************************************************************************/

always_ff @(posedge clk)

begin

    if (!reset_n) begin

        counter <= '0;

        data_out <= '0;

        dv <= 1'b0;

    end

    else begin

        counter <= (counter < r-1) ? counter + 1 : '0;

        dv <= (counter == r-1);

        data_out <= (counter == r-1) ? data_in : data_out;

    end

end

/*********************************************************************************************/

endmodule