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Xilinx FPGA MIPI DSI TX Subsystem 仿真笔记

news 来源：原创 2025/6/8 9:37:51

MIPI DSI TX Subsystem IP接口如图。

测试文件：

`timescale 1ns / 100ps

module Parallel2DSI_tb();

parameter periode_1 = 20;
parameter periode_2 = 20;
parameter periode_3 = 20;
parameter CLKT = 2;

reg rstn;
reg i_clk;

parameter C_M_AXI_ADDR_WIDTH = 7;

//s_axi
wire s_axi_awready ;
reg s_axi_awvalid ;
reg [C_M_AXI_ADDR_WIDTH-1:0] s_axi_awaddr ;
wire s_axi_arready ;
reg s_axi_arvalid ;
reg [C_M_AXI_ADDR_WIDTH-1:0] s_axi_araddr ;
wire s_axi_wready ;
reg s_axi_wvalid ;
reg [31:0] s_axi_wdata ;
reg [3:0] s_axi_wstrb ;
reg s_axi_rready ;
wire s_axi_rvalid ;
wire [31:0] s_axi_rdata ;
wire [1:0] s_axi_rresp ;
reg s_axi_bready ;
wire s_axi_bvalid ;
wire [1:0] s_axi_bresp ;


//s_axis
reg s_axis_aclk ;
reg s_axis_aresetn ;
// reg s_axis_tvalid ;
wire s_axis_tvalid ;
wire s_axis_tready ;
reg [7:0] s_axis_tdata ;
// reg s_axis_tlast ;
wire s_axis_tlast ;
// reg [95:0] s_axis_tuser ;
wire [0:0] s_axis_tuser ;
reg [0:0] s_axis_tkeep ;
reg [1:0] s_axis_tdest ;


wire mipi_phy_if_clk_hs_n;
wire mipi_phy_if_clk_hs_p;
wire mipi_phy_if_clk_lp_n;
wire mipi_phy_if_clk_lp_p;
wire [3 : 0] mipi_phy_if_data_hs_n;
wire [3 : 0] mipi_phy_if_data_hs_p;
wire [3 : 0] mipi_phy_if_data_lp_n;
wire [3 : 0] mipi_phy_if_data_lp_p;


wire interrupt;
wire s_axi_init_rdy;

   initial begin
   rstn = 1'b0;
s_axis_aresetn = 0;
s_axis_tdest = 0;
s_axis_aclk = 0;
s_axis_tdata = 0;
s_axis_tkeep = 1'b1;
//s_axi_bready = 1'b0;


   #1600;
   #1600 rstn = 1'b1;

#90000;
s_axis_aresetn = 1;

   end

   initial begin
   s_axi_awaddr = 7'd0;
   s_axi_araddr = 7'd0;
   s_axi_awvalid = 1'b0;
   s_axi_wvalid = 1'b0;
   s_axi_arvalid = 1'b0;
   s_axi_rready = 1'b0;
   s_axi_bready = 1'b0;
   s_axi_wdata = 32'h0104_15bc;
   s_axi_wstrb = 4'b1001;
#99000;
   s_axi_awaddr = 7'd0;
   s_axi_araddr = 7'd0;
   s_axi_awvalid = 1'b1;
   s_axi_wvalid = 1'b1;
   s_axi_arvalid = 1'b1;
   s_axi_rready = 1'b1;
   s_axi_bready = 1'b1;
   s_axi_wdata = 32'h0104_15bc;
   s_axi_wstrb = 4'b1001;


   wait(s_axi_awready == 1'b1) #(20 * 1) s_axi_awvalid = 1'b0;


   end

   initial begin
   i_clk = 1'b0;
   end

   always i_clk = #periode_1 ~i_clk;
always #20 s_axis_aclk = ~s_axis_aclk;




//assign s_axis_aresetn = locked;

reg [10:0] cnt_h = 0;
reg [10:0] cnt_v = 0;

// 128*32
always @(posedge s_axis_aclk)
   if(s_axis_aresetn && s_axi_init_rdy==1 )
   begin
       if(s_axis_tready)
           if(cnt_h==200)
               cnt_h <= 40;
           else
               cnt_h <= cnt_h + 1;

       if(cnt_h==200)
           if(cnt_v >= 31)
               cnt_v <= 0;
           else
               cnt_v <= cnt_v + 1;
   end

//----------------------------------------------------------------------------------

// assign s_axis_tvalid = 0;
assign s_axis_tvalid = (cnt_h >= 73) ? 1:0;
assign s_axis_tuser[0] = (cnt_v==0 && cnt_h==73)? 1 : 0 ;
assign s_axis_tlast = (cnt_h==200)? 1 : 0 ;
// s_axis_tuser[0] = 0; //Frame start

always @(posedge s_axis_aclk)
   if(s_axis_tvalid && s_axis_tready) begin
       s_axis_tdata[7:0] <= s_axis_tdata[7:0] + 1;
   end

clk_wiz_0 clk_wiz_0inst
(
.clk_in1 (i_clk)
,.resetn (rstn)
,.clk_out1 (dphy_clk_200M)
,.clk_out2 (txclkesc_in)
,.clk_out3 (oserdes_clk_in)
,.clk_out4 (oserdes_clk90_in)
,.clk_out5 (txbyteclkhs_in)
,.locked (locked)
);

mipi_dsi_tx_subsystem_0 tx_inst
(
.s_axis_aclk (s_axis_aclk)
,.s_axis_aresetn (s_axis_aresetn)
,.dphy_clk_200M (dphy_clk_200M)
,.txclkesc_out (txclkesc_out)
,.oserdes_clk_out (oserdes_clk_out)
,.txbyteclkhs (txbyteclkhs)
,.oserdes_clkdiv_out (oserdes_clkdiv_out)
,.system_rst_out (system_rst_out)
,.mmcm_lock_out (mmcm_lock_out)
,.interrupt (interrupt)
,.s_axi_araddr (s_axi_araddr)
,.s_axi_arready (s_axi_arready)
,.s_axi_arvalid (s_axi_arvalid)
,.s_axi_awaddr (s_axi_awaddr)
,.s_axi_awready (s_axi_awready)
,.s_axi_awvalid (s_axi_awvalid)
,.s_axi_bready (s_axi_bready)
,.s_axi_bresp (s_axi_bresp)
,.s_axi_bvalid (s_axi_bvalid)
,.s_axi_rdata (s_axi_rdata)
,.s_axi_rready (s_axi_rready)
,.s_axi_rresp (s_axi_rresp)
,.s_axi_rvalid (s_axi_rvalid)
,.s_axi_wdata (s_axi_wdata)
,.s_axi_wready (s_axi_wready)
,.s_axi_wstrb (s_axi_wstrb)
,.s_axi_wvalid (s_axi_wvalid)
,.s_axis_tdata (s_axis_tdata)
,.s_axis_tlast (s_axis_tlast)
,.s_axis_tready (s_axis_tready)
,.s_axis_tuser (s_axis_tuser)
,.s_axis_tvalid (s_axis_tvalid)
,.mipi_phy_if_clk_hs_n (mipi_phy_if_clk_hs_n)
,.mipi_phy_if_clk_hs_p (mipi_phy_if_clk_hs_p)
,.mipi_phy_if_clk_lp_n (mipi_phy_if_clk_lp_n)
,.mipi_phy_if_clk_lp_p (mipi_phy_if_clk_lp_p)
,.mipi_phy_if_data_hs_n (mipi_phy_if_data_hs_n)
,.mipi_phy_if_data_hs_p (mipi_phy_if_data_hs_p)
,.mipi_phy_if_data_lp_n (mipi_phy_if_data_lp_n)
,.mipi_phy_if_data_lp_p (mipi_phy_if_data_lp_p)
);