////////////////////////
//LVDS-BUS SYSTEM DEMO//
////////////////////////

module master_top(
  input resetn,
  input clock, 
    
  input lvds_up_din_p,
  input lvds_up_din_n, 
           
  output lvds_down_dout_p,
  output lvds_down_dout_n,
     
  input  [12:0] io_FSMC_addr,
  input  [7:0]  io_FSMC_dataIn,
  output [7:0]  io_FSMC_dataOut,
  output        io_FSMC_dataOEn,
  input         io_FSMC_cen,
  input         io_FSMC_oen,
  input         io_FSMC_wen

);

wire clk_400m;
wire clk_100m;
wire clk_50m;
wire clk_50m_a;
wire clk_10m;

reg        rst_n;

wire       lvds_down_dout;
wire       lvds_up_din;

reg        rstn_d;






always@(posedge clk_10m) begin
    rstn_d <= resetn;
	rst_n <= rstn_d;
end


Gowin_rPLL u_Gowin_rPLL(
  .clkout(clk_400m), //pll clkout,400MHz
  .clkoutd(clk_100m), //100MHz
  .clkin(clock) //clkin,50MHz
);


Gowin_rPLL1 u_Gowin_rPLL1(
  .clkout(clk_50m), //output clkout
  .lock(), //output lock
  .clkin(clock) //input clkin
);


TLVDS_OBUF lvds_downstream_out(
  .O(lvds_down_dout_p),
  .OB(lvds_down_dout_n),
  .I(lvds_down_dout)
);


TLVDS_IBUF lvds_upstream_in(
  .O(lvds_up_din),
  .I(lvds_up_din_p),
  .IB(lvds_up_din_n)
);


defparam Inst5_CLKDIVC.DIV_MODE = "5" ;
CLKDIV Inst5_CLKDIVC(
  .RESETN (1'b1  ),
  .HCLKIN (clk_50m),
  .CALIB  (1'b0     ),
  .CLKOUT (clk_10m  )
);


BackBoardMst i_BackBoardMst(
    .io_FSMC_addr(io_FSMC_addr),
    .io_FSMC_dataIn(io_FSMC_dataIn),
    .io_FSMC_dataOut(io_FSMC_dataOut),
    .io_FSMC_dataOEn(io_FSMC_dataOEn),
    .io_FSMC_cen(io_FSMC_cen),
    .io_FSMC_oen(io_FSMC_oen),
    .io_FSMC_wen(io_FSMC_wen),

    .io_reset(~rst_n),

    .io_oser_pclk(clk_10m), 
    .io_oser_fclk(clk_50m),  
    .io_ides_pclk(clk_100m),
    .io_ides_fclk(clk_400m),

    .io_lvds_down_dout(lvds_down_dout),
    .io_lvds_up_din(lvds_up_din)
);






endmodule