module QuadSPIm(
    input Clk_i,
    input Rst_i,
    input Start_i,
    input EmptyFlag_i,
    input ClockPhase_i,
    input [31:0] SpiData_i,
    input SpiDataVal_i,
    input SelSt_i,
    input [1:0] WidthSel_i,
    input  Lag_i,
    input  Lead_i,
    input EndianSel_i,
    input [5:0] Stop_i,
    input PulsePol_i,   
    output reg Mosi0_i,
    output reg Mosi1_i,
    output reg Mosi2_i,
    output reg Mosi3_i,
    output reg  Sck_o,
    output reg Val_o,
    output Ss_o 
);
//================================================================================
//  REG/WIRE
//================================================================================
    reg startFlag;
    reg startR;
    reg [31:0] trCnt;

    reg valReg;
    reg lineBusy;
    reg [5:0] ssCnt;
    reg ss;
    reg ssR;
    reg [31:0] spiDataR;
    reg oldDataFlag;
    reg [7:0] mosiReg0;
    reg [7:0] mosiReg1;
    reg [7:0] mosiReg2;
    reg [7:0] mosiReg3;
    reg [3:0] ssNum;
    reg [2:0] delayCnt;
    reg stopFlag;
//================================================================================
//  ASSIGNMENTS
//================================================================================

    assign Ss_o = ss; 
//================================================================================
//  CODING
//================================================================================	


    always @(*) begin 
        if (Start_i) begin 
            Val_o = valReg;
        end
        else begin 
            Val_o = 1'b0;
        end
    end
    
    
    
    always @(*) begin 
        if (SelSt_i) begin 
            if (!ss) begin 
                lineBusy = 1'b1;
            end
            else begin 
                lineBusy = 1'b0;
            end
        end
        else begin 
            if (ss) begin 
                lineBusy = 1'b1;
            end
            else begin 
                lineBusy = 1'b0;
            end
        end
    end
    
    
    // always @(posedge Clk_i) begin 
    //     if (Rst_i) begin 
    //         trCnt <= 1'b0;
    //     end
    //     else begin 
    //         if ( ssCnt == (ssNum + Lead_i + Lag_i)) begin 
    //             trCnt <= trCnt + 1'b1;
    //         end
    //         else if (oldDataFlag) begin 
    //             trCnt <= 1'b0;
    //         end
    //     end
    // end
    
    
    
    always @(posedge Clk_i) begin 
        if (Rst_i) begin 
            delayCnt <= 1'b0;
        end
        else begin 
            if (stopFlag &&delayCnt < Stop_i) begin 
                delayCnt <= delayCnt + 1'b1;
            end
            else begin 
                delayCnt <= 1'b0;
            end
        end
    end
    
    always @(posedge Clk_i) begin 
        if (Rst_i) begin 
            stopFlag <= 1'b0;
        end
        else begin
            if (SelSt_i) begin 
                if (ss && !ssR) begin 
                    stopFlag <= 1'b1;
                end
                else if ( delayCnt == Stop_i) begin 
                    stopFlag <= 1'b0;
                end
            end
            else begin 
                if (!ss && ssR) begin 
                    stopFlag <= 1'b1;
                end
                else if (delayCnt == Stop_i) begin 
                    stopFlag <= 1'b0;
                end
            end
        end
    end
    
    
    
    always @(*) begin
        if (SelSt_i) begin 
            if (PulsePol_i) begin 
                if (ClockPhase_i) begin
                    if (Lead_i == 0) begin 
                        if (!ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (!ss && (ssCnt < ssNum+Lag_i+Lead_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end
                else begin
                    if (Lead_i == 0) begin 
                        if (!ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (!ss && (ssCnt < ssNum + Lag_i + Lead_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end
            end
            else begin 
                if (ClockPhase_i) begin
                    if (Lead_i == 0) begin  
                        if (!ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (!ss && (ssCnt <ssNum + Lag_i + Lag_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end 
                else begin
                    if (Lead_i == 0) begin 
                        if (!ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (!ss && (ssCnt < ssNum + Lag_i + Lead_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end
            end
        end
        else begin 
              if (PulsePol_i) begin 
                if (ClockPhase_i) begin
                    if (Lead_i == 0) begin 
                        if (ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (ss && (ssCnt < ssNum+Lag_i+Lead_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end
                else begin
                    if (Lead_i == 0) begin 
                        if (ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (ss && (ssCnt < ssNum + Lag_i + Lead_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end
            end
            else begin 
                if (ClockPhase_i) begin
                    if (Lead_i == 0) begin  
                        if (ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (ss && (ssCnt <ssNum + Lag_i + Lag_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end 
                else begin
                    if (Lead_i == 0) begin 
                        if (ss && (ssCnt <= ssNum+Lag_i+Lead_i && ssCnt > Lag_i) ) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                    else begin 
                        if (ss && (ssCnt < ssNum + Lag_i + Lead_i && ssCnt > Lag_i)) begin 
                            Sck_o = ~(~Clk_i);
                        end
                        else begin 
                            Sck_o = 1'b0;
                        end
                    end
                end
            end
        end
            
    end
    
    
    always @(*) begin
        if (SelSt_i) begin 
            if (EndianSel_i) begin 
                case (WidthSel_i) 
                    0 : begin 
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i) ) ? (mosiReg3[0]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg3[0]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                    1 : begin 
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg3[0]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg2[0]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                    2 : begin 
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg3[0]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg2[0]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                    3 : begin 
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg3[0]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg2[0]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                endcase
            end
            else begin 
                case (WidthSel_i)
                    0 : begin
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[1]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[1]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[1]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg3[1]):1'b0;
                    end
                    1 : begin
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[3]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[3]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[3]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt >Lag_i))? (mosiReg3[3]):1'b0;
                    end
                    2 : begin
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[5]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[5]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[5]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg3[5]):1'b0;
                    end
                    3 : begin
                        Mosi0_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[7]):1'b0;
                        Mosi1_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[7]):1'b0;
                        Mosi2_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[7]):1'b0;
                        Mosi3_i = (!ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg3[7]):1'b0;
                    end
                endcase
            end
        end
        else begin 
            if (EndianSel_i) begin 
                case (WidthSel_i) 
                    0 : begin 
                        Mosi0_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i) )?(mosiReg3[0]):1'b0;
                        Mosi1_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg2[0]):1'b0;
                        Mosi2_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                    1 : begin 
                        Mosi0_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg3[0]):1'b0;
                        Mosi1_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg2[0]):1'b0;
                        Mosi2_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                    2 : begin
                        Mosi0_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg3[0]):1'b0;
                        Mosi1_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg2[0]):1'b0;
                        Mosi2_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                    3 : begin 
                        Mosi0_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg3[0]):1'b0;
                        Mosi1_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg2[0]):1'b0;
                        Mosi2_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg1[0]):1'b0;
                        Mosi3_i = (ss && (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i)) ? (mosiReg0[0]):1'b0;
                    end
                endcase
            end
            else begin 
                case (WidthSel_i)
                    0 : begin
                        Mosi0_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[1]):1'b0;
                        Mosi1_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[1]):1'b0;
                        Mosi2_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[1]):1'b0;
                        Mosi3_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg3[1]):1'b0;
                    end
                    1 : begin
                        Mosi0_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[3]):1'b0;
                        Mosi1_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[3]):1'b0;
                        Mosi2_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[3]):1'b0;
                        Mosi3_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt >Lag_i))? (mosiReg3[3]):1'b0;
                    end
                    2 : begin
                        Mosi0_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[5]):1'b0;
                        Mosi1_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[5]):1'b0;
                        Mosi2_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[5]):1'b0;
                        Mosi3_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg3[5]):1'b0;
                    end
                    3 : begin
                        Mosi0_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg0[7]):1'b0;
                        Mosi1_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg1[7]):1'b0;
                        Mosi2_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg2[7]):1'b0;
                        Mosi3_i = (ss&& (ssCnt <= ssNum+Lag_i && ssCnt > Lag_i))? (mosiReg3[7]):1'b0;
                    end
                endcase
            end
        end
    end
    
    
    
    always @(posedge Clk_i) begin
        ssR <= ss;
    end
    
    
    always @(*) begin
        if (SelSt_i) begin 
            if (ss && !ssR) begin 
                valReg = 1'b1;
            end
            else begin 
                valReg = 1'b0;
            end
        end
        else begin 
            if (!ss&& ssR) begin 
                valReg = 1'b1;
            end
            else begin 
                valReg = 1'b0;
            end
        end
    end
    
    
    always @(posedge Clk_i) begin
        if (valReg) begin  
            spiDataR <= SpiData_i;
        end
    end
    
    
    // always @(*) begin 
    //     if (Rst_i) begin 
    //         oldDataFlag = 1'b0;
    //     end
    //     else begin 
    //         if (spiDataR == SpiData_i && (SpiData_i != 0) || EmptyFlag_i ) begin 
    //             oldDataFlag = 1'b1;
    //         end
    //         else begin 
    //             oldDataFlag = 1'b0;
    //         end
    //     end
    // end
    
    
    
    always @(*) begin 
        if (Rst_i) begin 
            startFlag = 1'b0;
        end
        else begin 
            if (Start_i && !stopFlag && !EmptyFlag_i  && !oldDataFlag ) begin 
                startFlag = 1'b1;
            end
            else begin 
                startFlag = 1'b0;
            end
        end
    end
    
    always @(*) begin 
        if (Rst_i) begin 
            ssNum = 1'b0;
        end
        else begin 
            case (WidthSel_i) 
                0 : begin 
                    ssNum = 2;
                end
                1 : begin 
                    ssNum = 4;
                end
                2 : begin 
                    ssNum = 6;
                end
                3 : begin 
                    ssNum = 8;
                end
            endcase
        end
    end
    
    
    always @(negedge Clk_i) begin 
        if (Rst_i) begin 
            ssCnt <= 1'b0;
        end
        else if (ssCnt < (ssNum+Lag_i+Lead_i)  && startFlag  ) begin 
            ssCnt <= ssCnt + 1'b1;
        end
        else begin
            if (ssCnt == ssNum-1 || !startFlag) begin 
                ssCnt <= 1'b0;
            end
        end
    end
    
    
    
    
    always @(negedge Clk_i) begin
        if (SelSt_i) begin  
            if (Rst_i) begin 
                ss <= 1'b1;
            end
            else begin 
                if (ssCnt < (ssNum+Lag_i+Lead_i)  && startFlag ) begin 
                    ss <= 1'b0;
                end
                else begin 
                    ss <= 1'b1;
                end
            end
        end
        else begin 
            if (Rst_i) begin 
                ss <= 1'b0;
            end
            else begin 
                if (ssCnt < (ssNum+Lag_i+Lead_i)  && startFlag ) begin 
                    ss <= 1'b1;
                end
                else begin 
                    ss <= 1'b0;
                end
            end
        end
    end
    
    
    always @(negedge Clk_i) begin 
        if (Rst_i) begin 
            mosiReg0 <= SpiData_i[31:24];
        end
        else begin
            case (WidthSel_i)
            3: begin
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR && (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[31:24];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[31:24];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[7:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[31:24];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[7:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[31:24];
                        end
                    end
                end
            end
            2: begin
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[23:18];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[23:18];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[5:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[23:18];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[5:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[23:18];
                        end
                    end
                end
            end
            1: begin
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[15:12];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[15:12];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[3:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[15:12];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[3:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[15:12];
                        end
                    end
                end
            end
            0: begin
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[7:6];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= { mosiReg0[0],1'b0 };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[7:6];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[1:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[7:6];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg0 <= {1'b0, mosiReg0[1:1] };
                        end
                        else begin 
                            mosiReg0 <= SpiData_i[7:6];
                        end
                    end
                end
            end
            endcase
        end
    end
    
    always @(negedge Clk_i) begin 
        if (Rst_i) begin 
            mosiReg1 <= SpiData_i[23:16];
        end
        else begin
            case(WidthSel_i)
            3: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[23:16];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[23:16];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[7:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[23:16];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[7:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[23:16];
                        end
                    end
                end
            end
            2: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[17:12];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[17:12];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[5:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[17:12];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[5:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[17:12];
                        end
                    end
                end
            end
            1: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[11:8];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[11:8];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[3:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[11:8];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[3:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[11:8];
                        end
                    end
                end
            end
            0: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[5:4];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= { mosiReg1[0],1'b0 };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[5:4];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[1:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[5:4];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg1 <= {1'b0, mosiReg1[1:1] };
                        end
                        else begin 
                            mosiReg1 <= SpiData_i[5:4];
                        end
                    end
                end
            end
            endcase
        end
    end
    
    always @(negedge Clk_i) begin 
        if (Rst_i) begin 
            mosiReg2 <= SpiData_i[15:8];
        end
        else begin
            case(WidthSel_i)
            3 : begin 
                if (!EndianSel_i) begin
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= { mosiReg2[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[15:8];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= { mosiReg2[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[15:8];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= {1'b0, mosiReg2[7:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[15:8];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= {1'b0, mosiReg2[7:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[15:8];
                        end
                    end
                end
            end
            2 : begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= { mosiReg2[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[11:6];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg2 <= { mosiReg2[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[11:6];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= {1'b0, mosiReg2[5:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[11:6];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg2 <= {1'b0, mosiReg2[5:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[11:6];
                        end
                    end
                end
            end
            1 : begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= { mosiReg2[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[7:4];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg2 <= { mosiReg2[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[7:4];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= {1'b0, mosiReg2[3:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[7:4];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg2 <= {1'b0, mosiReg2[3:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[7:4];
                        end
                    end
                end
            end
            0 : begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= { mosiReg2[0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[3:2];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg2 <= { mosiReg2[0],1'b0 };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[3:2];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg2 <= {1'b0, mosiReg2[1:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[3:2];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg2 <= {1'b0, mosiReg2[1:1] };
                        end
                        else begin 
                            mosiReg2 <= SpiData_i[3:2];
                        end
                    end
                end
            end
            endcase
        end
    end


    
    always @(negedge Clk_i) begin 
        if (Rst_i) begin 
            mosiReg3 <= SpiData_i[7:0];
        end
        else begin
            case (WidthSel_i)
            3: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= { mosiReg3[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[7:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= { mosiReg3[6:0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[7:0];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin 
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= {1'b0, mosiReg3[7:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[7:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= {1'b0, mosiReg3[7:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[7:0];
                        end
                    end
                end
            end
            2: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= { mosiReg3[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[5:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg3 <= { mosiReg3[4:0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[5:0];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= {1'b0, mosiReg3[5:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[5:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg3 <= {1'b0, mosiReg3[5:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[5:0];
                        end
                    end
                end
            end
            1: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= { mosiReg3[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[3:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg3 <= { mosiReg3[2:0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[3:0];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= {1'b0, mosiReg3[3:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[3:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg3 <= {1'b0, mosiReg3[3:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[3:0];
                        end
                    end
                end
            end
            0: begin 
                if (!EndianSel_i) begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= { mosiReg3[0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[1:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg3 <= { mosiReg3[0],1'b0 };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[1:0];
                        end
                    end
                end
                else begin 
                    if (SelSt_i) begin  
                        if (!ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin
                            mosiReg3 <= {1'b0, mosiReg3[1:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[1:0];
                        end
                    end
                    else begin 
                        if (ssR&& (ssCnt > Lag_i && ssCnt < ssNum + Lag_i + Lead_i)) begin 
                            mosiReg3 <= {1'b0, mosiReg3[1:1] };
                        end
                        else begin 
                            mosiReg3 <= SpiData_i[1:0];
                        end
                    end
                end
            end
            endcase
        end
    end
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    endmodule