source: trunk/MultiChannelUSB/adc_para.v@ 143

module adc_para
        (
                input   wire                    lvds_dco,
                input   wire                    lvds_fco,
                input   wire                    para_data_ready,
                input   wire    [11:0]  para_data,

                output  wire    [11:0]  adc_data
        );

        reg     [1:0]   int_data_ready;
        reg     [11:0]  int_data, int_adc_data;

        always @ (posedge lvds_dco)
        begin
                int_data_ready[1] <= int_data_ready[0];
                int_data_ready[0] <= para_data_ready;
                if ((int_data_ready[0]) & (~int_data_ready[1]))
                begin
                        int_data <= para_data;
                end
        end

        always @ (posedge lvds_fco)
        begin
                int_adc_data <= int_data;
        end
        
        assign  adc_data = int_adc_data;

endmodule