特別版 No.3第5章　MIPIサポートページ

// ================================
// FILE NAME	: dsi_tx_top.v
// DEPARTMENT	: MACNICA Tecstar Company
// ================================
// DESCRIPTION	: DSI Tx top source
// ================================
module dsi_tx_top (

  input	wire  pixclk,
  input	wire  resetn,
  input	wire  [7:0] r_data_i,
  input	wire  [7:0] g_data_i,
  input	wire  [7:0] b_data_i,
  input	wire  hsync_i,
  input	wire  vsync_i,
  input	wire  de_i,
  inout	wire  clk_p_io,
  inout	wire  clk_n_io,
  inout	wire  [3:0] d_p_io,
  inout	wire  [3:0] d_n_io
);

// ======================
// REG / WIRE DECLARATION
// ======================
  wire  [23:0] rgb_data;
  wire  byte_clk;
  wire  [31:0] byte_data;
  wire  byte_en;
  wire  hsync_start;
  wire  vsync_start;
  wire  [5:0] dt;
  wire  [15:0] wc;
  wire  c2d_ready;
  wire  hsync_start_dly;
  wire  vsync_start_dly;

// ======================
// PARAMETER DEFINITION
// ======================
  parameter  VC = 2'b00;
  parameter  DATATYPE = 6'h3E;    // RGB888
  parameter  WORDCNT  = 16'h1680; // 1920x3byte(RGB888) = 5760byte = 0x1680

// ======================
// FUNCTION DESCRIPTION
// ======================
  assign     gb_data = {r_data_i, g_data_i, b_data_i};

// ----------------------
// Pixel to Byte converter
// ----------------------
  tx_pixel2byte
    u_tx_pixel2byte (
      .rst_n_i      (resetn	),
      .pix_clk_i    (pixclk	),
      .byte_clk_i   (byte_clk	),
      .vsync_i      (vsync_i	),
      .hsync_i      (hsync_i	),
      .de_i         (de_i	),
      .pix_data0_i  (rgb_data	),
      .c2d_ready_i  (c2d_ready	),
      .txfr_en_i    (1'b1	),
      .vsync_start_o(vsync_start),
      .vsync_end_o  (		),
      .hsync_start_o(hsync_start),
      .hsync_end_o  (		),
      .txfr_req_o   (		),
      .byte_en_o    (byte_en	),
      .byte_data_o  (byte_data	),
      .fifo_overflow_o(		),
      .fifo_underflow_o(	),
      .fifo_full_o  (		),
      .fifo_empty_o (		)
    ) ;


// --------------------------------
// Data Type / Word Count Generator
// --------------------------------
  dt_wc_gen
    #(
      .DATATYPE		(DATATYPE		),
      .WORDCNT		(WORDCNT		)
    )
    u_dt_wc_gen      (byte_clk	(byte_clk	),
      .resetn	     (resetn			),
      .de_i          (de_i			),
      .hsync_start_i (hsync_start		),
      .vsync_start_i (vsync_start		),
      .hsync_start_o (hsync_start_dly           ),
      .vsync_start_o (vsync_start_dly           ),
      .dt_o          (dt			),
      .wc_o          (wc			)
    );

// --------------------------------
// MIPI DSI Transmitter
// --------------------------------
  mipi_dsi_tx
    u_mipi_dsi_tx (.ref_clk_i ( pixclk	),
      .reset_n_i  (resetn		),
      .usrstdby_i (~resetn		),
      .pd_dphy_i  (~resetn		),
      .byte_or_pkt_data_i (byte_data	),
      .byte_or_pkt_data_en_i ( byte_en	),
      .ready_o    (			),
      .vc_i       (VC			),
      .dt_i       (dt			),
      .wc_i       (wc			),
      .clk_hs_en_i(1'b1			),
      .d_hs_en_i  (c2d_ready		),
      .d_hs_rdy_o (			),
      .byte_clk_o (byte_clk		),
      .c2d_ready_o(c2d_ready		),
      .clk_p_io   (clk_p_io		),
      .clk_n_io   (clk_n_io		),
      .d_p_io     (d_p_io		),
      .d_n_io	  (d_n_io		),
      .vsync_start_i (vsync_start_dly	),
      .hsync_start_i (hsync_start_dly	),
      .lp_rx_en_i (1'b0			), // Unuse LP signal command transmission
      .lp_rx_data_p_o (			), // Unuse LP signal command transmission
      .lp_rx_data_n_o (			)  // Unuse LP signal command transmission
    );

endmodule