Subversion Repositories de1_olpcl2294_system

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

//

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

`include "timescale.v"

`include "gpio_defines.v"

module top(

  ////////////////////////  Clock Input     ////////////////////////

  input [1:0]       clock_24,               //  24 MHz

  input [1:0]       clock_27,               //  27 MHz

  input             clock_50,               //  50 MHz

  input             ext_clock,              //  External Clock

  ////////////////////////  Push Button     ////////////////////////

  input [3:0]       key,                    //  Pushbutton[3:0]

  ////////////////////////  DPDT Switch     ////////////////////////

  input [9:0]       sw,                     //  Toggle Switch[9:0]

  ////////////////////////  7-SEG Dispaly   ////////////////////////

  output    [6:0]   hex0,                   //  Seven Segment Digit 0

  output    [6:0]   hex1,                   //  Seven Segment Digit 1

  output    [6:0]   hex2,                   //  Seven Segment Digit 2

  output    [6:0]   hex3,                   //  Seven Segment Digit 3

  ////////////////////////////  LED     ////////////////////////////

  output    [7:0]   ledg,                   //  LED Green[7:0]

  output    [9:0]   ledr,                   //  LED Red[9:0]

  ////////////////////////////  UART    ////////////////////////////

  output            uart_txd,               //  UART Transmitter

  input             uart_rxd,               //  UART Receiver

  ///////////////////////       SDRAM Interface ////////////////////////

  inout [15:0]      dram_dq,                //  SDRAM Data bus 16 Bits

  output    [11:0]  dram_addr,              //  SDRAM Address bus 12 Bits

  output            dram_ldqm,              //  SDRAM Low-byte Data Mask 

  output            dram_udqm,              //  SDRAM High-byte Data Mask

  output            dram_we_n,              //  SDRAM Write Enable

  output            dram_cas_n,             //  SDRAM Column Address Strobe

  output            dram_ras_n,             //  SDRAM Row Address Strobe

  output            dram_cs_n,              //  SDRAM Chip Select

  output            dram_ba_0,              //  SDRAM Bank Address 0

  output            dram_ba_1,              //  SDRAM Bank Address 0

  output            dram_clk,               //  SDRAM Clock

  output            dram_cke,               //  SDRAM Clock Enable

  ////////////////////////  Flash Interface ////////////////////////

  inout [7:0]       fl_dq,                  //  FLASH Data bus 8 Bits

  output    [21:0]  fl_addr,                //  FLASH Address bus 22 Bits

  output            fl_we_n,                //  FLASH Write Enable

  output            fl_rst_n,               //  FLASH Reset

  output            fl_oe_n,                //  FLASH Output Enable

  output            fl_ce_n,                //  FLASH Chip Enable

  ////////////////////////  SRAM Interface  ////////////////////////

  inout   [15:0]    sram_dq,                //  SRAM Data bus 16 Bits

  output  [17:0]    sram_addr,              //  SRAM Address bus 18 Bits

  output            sram_ub_n,              //  SRAM High-byte Data Mask 

  output            sram_lb_n,              //  SRAM Low-byte Data Mask 

  output            sram_we_n,              //  SRAM Write Enable

  output            sram_ce_n,              //  SRAM Chip Enable

  output            sram_oe_n,              //  SRAM Output Enable

  ////////////////////  SD Card Interface   ////////////////////////

  inout             sd_dat,                 //  SD Card Data

  inout             sd_dat3,                //  SD Card Data 3

  inout             sd_cmd,                 //  SD Card Command Signal

  output            sd_clk,                 //  SD Card Clock

  ////////////////////////  I2C     ////////////////////////////////

  inout             i2c_sdat,               //  I2C Data

  output            i2c_sclk,               //  I2C Clock

  ////////////////////////  PS2     ////////////////////////////////

  input             ps2_dat,                //  PS2 Data

  input             ps2_clk,                //  PS2 Clock

  ////////////////////  USB JTAG link   ////////////////////////////

  input             tdi,                    // CPLD -> FPGA (data in)

  input             tck,                    // CPLD -> FPGA (clk)

  input             tcs,                    // CPLD -> FPGA (CS)

  output            tdo,                    // FPGA -> CPLD (data out)

  ////////////////////////  VGA         ////////////////////////////

  output            vga_hs,                 //  VGA H_SYNC

  output            vga_vs,                 //  VGA V_SYNC

  output    [3:0]   vga_r,                  //  VGA Red[3:0]

  output    [3:0]   vga_g,                  //  VGA Green[3:0]

  output    [3:0]   vga_b,                  //  VGA Blue[3:0]

  ////////////////////  Audio CODEC     ////////////////////////////

  inout             aud_adclrck,            //  Audio CODEC ADC LR Clock

  input             aud_adcdat,             //  Audio CODEC ADC Data

  inout             aud_daclrck,            //  Audio CODEC DAC LR Clock

  output            aud_dacdat,             //  Audio CODEC DAC Data

  inout             aud_bclk,               //  Audio CODEC Bit-Stream Clock

  output            aud_xck,                //  Audio CODEC Chip Clock

  ////////////////////////  GPIO    ////////////////////////////////

  inout [35:0]      gpio_0,                 //  GPIO Connection 0

  inout [35:0]      gpio_1                  //  GPIO Connection 1

);

        parameter DW    = 32;

        parameter AW    = 32;

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

  // system wires

        wire                            sys_rst;

        wire        sys_clk = clock_24[0];

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

  // sync reset

  sync

    i_sync_reset(

            .async_sig(~key[0]),

            .sync_out(sys_rst),

            .clk(sys_clk)

          );

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

  // FLED

        reg [24:0] counter;

        wire [7:0]  fled;

        always @(posedge sys_clk or posedge sys_rst)

          if(sys_rst)

                counter <= 25'b0;

        else

                counter <= counter + 1;

        assign fled[0]  = sw[0];

        assign fled[1]  = sw[1];

        assign fled[2]  = sw[2];

        assign fled[3]  = sw[3];

        assign fled[4]  = sw[4];

        assign fled[5]  = sw[5];

        assign fled[6]  = sw[6];

        assign fled[7]  = counter[24];

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

//  wb_async_mem_bridge

  wire [31:0] m0_data_i;

  wire [31:0] m0_data_o;

  wire [31:0] m0_addr_o;

  wire [3:0]  m0_sel_o;

  wire        m0_we_o;

  wire        m0_cyc_o;

  wire        m0_stb_o;

  wire        m0_ack_i;

  wire        m0_err_i;

  wire        m0_rty_i;

  wb_async_mem_bridge #( .AW(24) )

    i_wb_async_mem_bridge(

      .wb_data_i(m0_data_i),

      .wb_data_o(m0_data_o),

      .wb_addr_o(m0_addr_o[23:0]),

      .wb_sel_o(m0_sel_o),

      .wb_we_o(m0_we_o),

      .wb_cyc_o(m0_cyc_o),

      .wb_stb_o(m0_stb_o),

      .wb_ack_i(m0_ack_i),

      .wb_err_i(m0_err_i),

      .wb_rty_i(m0_rty_i),

      .mem_d( gpio_1[31:0] ),

      .mem_a( gpio_0[23:0] ),

      .mem_oe_n( gpio_0[30] ),

      .mem_bls_n( { gpio_0[26], gpio_0[27], gpio_0[28], gpio_0[29] } ),

      .mem_we_n( gpio_0[25] ),

      .mem_cs_n( gpio_0[24] ),

      .wb_clk_i(sys_clk),

      .wb_rst_i(sys_rst)

    );

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

  // wb_conmax_top

  // Slave 0 Interface

  wire  [DW-1:0]  s0_data_i;

  wire  [DW-1:0]  s0_data_o;

  wire  [AW-1:0]  s0_addr_o;

  wire  [3:0]     s0_sel_o;

  wire            s0_we_o;

  wire            s0_cyc_o;

  wire            s0_stb_o;

  wire            s0_ack_i;

  wire            s0_err_i;

  wire            s0_rty_i;

  wire  [DW-1:0]  s1_data_i;

  wire  [DW-1:0]  s1_data_o;

  wire  [AW-1:0]  s1_addr_o;

  wire  [3:0]     s1_sel_o;

  wire            s1_we_o;

  wire            s1_cyc_o;

  wire            s1_stb_o;

  wire            s1_ack_i;

  wire            s1_err_i;

  wire            s1_rty_i;

  wire  [DW-1:0]  s2_data_i;

  wire  [DW-1:0]  s2_data_o;

  wire  [AW-1:0]  s2_addr_o;

  wire  [3:0]     s2_sel_o;

  wire            s2_we_o;

  wire            s2_cyc_o;

  wire            s2_stb_o;

  wire            s2_ack_i;

  wire            s2_err_i;

  wire            s2_rty_i;

  wire  [DW-1:0]  s3_data_i;

  wire  [DW-1:0]  s3_data_o;

  wire  [AW-1:0]  s3_addr_o;

  wire  [3:0]     s3_sel_o;

  wire            s3_we_o;

  wire            s3_cyc_o;

  wire            s3_stb_o;

  wire            s3_ack_i;

  wire            s3_err_i;

  wire            s3_rty_i;

  wire  [DW-1:0]  s4_data_i;

  wire  [DW-1:0]  s4_data_o;

  wire  [AW-1:0]  s4_addr_o;

  wire  [3:0]     s4_sel_o;

  wire            s4_we_o;

  wire            s4_cyc_o;

  wire            s4_stb_o;

  wire            s4_ack_i;

  wire            s4_err_i;

  wire            s4_rty_i;

  wire  [DW-1:0]  s5_data_i;

  wire  [DW-1:0]  s5_data_o;

  wire  [AW-1:0]  s5_addr_o;

  wire  [3:0]     s5_sel_o;

  wire            s5_we_o;

  wire            s5_cyc_o;

  wire            s5_stb_o;

  wire            s5_ack_i;

  wire            s5_err_i;

  wire            s5_rty_i;

  wire  [DW-1:0]  s6_data_i;

  wire  [DW-1:0]  s6_data_o;

  wire  [AW-1:0]  s6_addr_o;

  wire  [3:0]     s6_sel_o;

  wire            s6_we_o;

  wire            s6_cyc_o;

  wire            s6_stb_o;

  wire            s6_ack_i;

  wire            s6_err_i;

  wire            s6_rty_i;

  wb_conmax_top

    i_wb_conmax_top(

      // Master 0 Interface

      .m0_data_i(m0_data_o),

      .m0_data_o(m0_data_i),

      .m0_addr_i( {m0_addr_o[23:20], 8'b0, m0_addr_o[19:0]} ),

      .m0_sel_i(m0_sel_o),

      .m0_we_i(m0_we_o),

      .m0_cyc_i(m0_cyc_o),

      .m0_stb_i(m0_stb_o),

      .m0_ack_o(m0_ack_i),

      .m0_err_o(m0_err_i),

      .m0_rty_o(m0_rty_i),

      // Master 1 Interface 

      .m1_data_i(32'h0000_0000),

      .m1_addr_i(32'h0000_0000),

      .m1_sel_i(4'h0),

      .m1_we_i(1'b0),

      .m1_cyc_i(1'b0),

      .m1_stb_i(1'b0),

      // Master 2 Interface

      .m2_data_i(32'h0000_0000),

      .m2_addr_i(32'h0000_0000),

      .m2_sel_i(4'h0),

      .m2_we_i(1'b0),

      .m2_cyc_i(1'b0),

      .m2_stb_i(1'b0),

      // Master 3 Interface

      .m3_data_i(32'h0000_0000),

      .m3_addr_i(32'h0000_0000),

      .m3_sel_i(4'h0),

      .m3_we_i(1'b0),

      .m3_cyc_i(1'b0),

      .m3_stb_i(1'b0),

      // Master 4 Interface

      .m4_data_i(32'h0000_0000),

      .m4_addr_i(32'h0000_0000),

      .m4_sel_i(4'h0),

      .m4_we_i(1'b0),

      .m4_cyc_i(1'b0),

      .m4_stb_i(1'b0),

      // Master 5 Interface

      .m5_data_i(32'h0000_0000),

      .m5_addr_i(32'h0000_0000),

      .m5_sel_i(4'h0),

      .m5_we_i(1'b0),

      .m5_cyc_i(1'b0),

      .m5_stb_i(1'b0),

      // Master 6 Interface

      .m6_data_i(32'h0000_0000),

      .m6_addr_i(32'h0000_0000),

      .m6_sel_i(4'h0),

      .m6_we_i(1'b0),

      .m6_cyc_i(1'b0),

      .m6_stb_i(1'b0),

      // Master 7 Interface

      .m7_data_i(32'h0000_0000),

      .m7_addr_i(32'h0000_0000),

      .m7_sel_i(4'h0),

      .m7_we_i(1'b0),

      .m7_cyc_i(1'b0),

      .m7_stb_i(1'b0),

      // Slave 0 Interface

      .s0_data_i(s0_data_i),

      .s0_data_o(s0_data_o),

      .s0_addr_o(s0_addr_o),

      .s0_sel_o(s0_sel_o),

      .s0_we_o(s0_we_o),

      .s0_cyc_o(s0_cyc_o),

      .s0_stb_o(s0_stb_o),

      .s0_ack_i(s0_ack_i),

      .s0_err_i(s0_err_i),

      .s0_rty_i(s0_rty_i),

      // Slave 1 Interface

      .s1_data_i(s1_data_i),

      .s1_data_o(s1_data_o),

      .s1_addr_o(s1_addr_o),

      .s1_sel_o(s1_sel_o),

      .s1_we_o(s1_we_o),

      .s1_cyc_o(s1_cyc_o),

      .s1_stb_o(s1_stb_o),

      .s1_ack_i(s1_ack_i),

      .s1_err_i(s1_err_i),

      .s1_rty_i(s1_rty_i),

      // Slave 2 Interface

      .s2_data_i(s2_data_i),

      .s2_data_o(s2_data_o),

      .s2_addr_o(s2_addr_o),

      .s2_sel_o(s2_sel_o),

      .s2_we_o(s2_we_o),

      .s2_cyc_o(s2_cyc_o),

      .s2_stb_o(s2_stb_o),

      .s2_ack_i(s2_ack_i),

      .s2_err_i(s2_err_i),

      .s2_rty_i(s2_rty_i),

      // Slave 3 Interface

      .s3_data_i(32'h0000_0000),

      .s3_ack_i(1'b0),

      .s3_err_i(1'b0),

      .s3_rty_i(1'b0),

      // Slave 4 Interface

      .s4_data_i(32'h0000_0000),

      .s4_ack_i(1'b0),

      .s4_err_i(1'b0),

      .s4_rty_i(1'b0),

      // Slave 5 Interface

      .s5_data_i(32'h0000_0000),

      .s5_ack_i(1'b0),

      .s5_err_i(1'b0),

      .s5_rty_i(1'b0),

      // Slave 6 Interface

      .s6_data_i(32'h0000_0000),

      .s6_ack_i(1'b0),

      .s6_err_i(1'b0),

      .s6_rty_i(1'b0),

      // Slave 7 Interface

      .s7_data_i(32'h0000_0000),

      .s7_ack_i(1'b0),

      .s7_err_i(1'b0),

      .s7_rty_i(1'b0),

      // Slave 8 Interface

      .s8_data_i(32'h0000_0000),

      .s8_ack_i(1'b0),

      .s8_err_i(1'b0),

      .s8_rty_i(1'b0),

      // Slave 9 Interface

      .s9_data_i(32'h0000_0000),

      .s9_ack_i(1'b0),

      .s9_err_i(1'b0),

      .s9_rty_i(1'b0),

      // Slave 10 Interface

      .s10_data_i(32'h0000_0000),

      .s10_ack_i(1'b0),

      .s10_err_i(1'b0),

      .s10_rty_i(1'b0),

      // Slave 11 Interface

      .s11_data_i(32'h0000_0000),

      .s11_ack_i(1'b0),

      .s11_err_i(1'b0),

      .s11_rty_i(1'b0),

      // Slave 12 Interface

      .s12_data_i(32'h0000_0000),

      .s12_ack_i(1'b0),

      .s12_err_i(1'b0),

      .s12_rty_i(1'b0),

      // Slave 13 Interface

      .s13_data_i(32'h0000_0000),

      .s13_ack_i(1'b0),

      .s13_err_i(1'b0),

      .s13_rty_i(1'b0),

      // Slave 14 Interface

      .s14_data_i(32'h0000_0000),

      .s14_ack_i(1'b0),

      .s14_err_i(1'b0),

      .s14_rty_i(1'b0),

      // Slave 15 Interface

      .s15_data_i(32'h0000_0000),

      .s15_ack_i(1'b0),

      .s15_err_i(1'b0),

      .s15_rty_i(1'b0),

      .clk_i(sys_clk),

      .rst_i(sys_rst)

    );

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

  // async_mem_if

  assign s0_err_i = 1'b0;

  assign s0_rty_i = 1'b0;

  async_mem_if #( .AW(18), .DW(16) )

    i_sram (

      .async_dq(sram_dq),

      .async_addr(sram_addr),

      .async_ub_n(sram_ub_n),

      .async_lb_n(sram_lb_n),

      .async_we_n(sram_we_n),

      .async_ce_n(sram_ce_n),

      .async_oe_n(sram_oe_n),

      .wb_clk_i(sys_clk),

      .wb_rst_i(sys_rst),

      .wb_adr_i( {14'h0000, s0_addr_o[17:0]} ),

      .wb_dat_i(s0_data_o),

      .wb_we_i(s0_we_o),

      .wb_stb_i(s0_stb_o),

      .wb_cyc_i(s0_cyc_o),

      .wb_sel_i(s0_sel_o),

      .wb_dat_o(s0_data_i),

      .wb_ack_o(s0_ack_i),

      .ce_setup(4'h0),

      .op_hold(4'h1),

      .ce_hold(4'h0),

      .big_endian_if_i(1'b0),

      .lo_byte_if_i(1'b0)

    );

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

  // GPIO a

  assign s1_rty_i = 1'b0;

  wire        gpio_a_inta_o;

  wire        gpio_a_clk_i;

  wire [31:0] gpio_a_aux_i;

  wire [31:0] gpio_a_ext_pad_i;

  wire [31:0] gpio_a_ext_pad_o;

  wire [31:0] gpio_a_ext_padoe_o;

  gpio_top

    i_gpio_a(

                  .wb_clk_i(sys_clk),

                  .wb_rst_i(sys_rst),

                  .wb_cyc_i(s1_cyc_o),

                  .wb_adr_i( {24'b0, s1_addr_o[7:0]} ),

                  .wb_dat_i(s1_data_o),

                  .wb_sel_i(s1_sel_o),

                  .wb_we_i(s1_we_o),

                  .wb_stb_i(s1_stb_o),

                  .wb_dat_o(s1_data_i),

                  .wb_ack_o(s1_ack_i),

                  .wb_err_o(s1_err_i),

                  .wb_inta_o(gpio_a_inta_o),

`ifdef GPIO_AUX_IMPLEMENT

                  .aux_i(gpio_a_aux_i),

`endif // GPIO_AUX_IMPLEMENT

`ifdef GPIO_CLKPAD

              .clk_pad_i(gpio_a_clk_i),

`endif //  GPIO_CLKPAD

                  .ext_pad_i(gpio_a_ext_pad_i),

                  .ext_pad_o(gpio_a_ext_pad_o),

                  .ext_padoe_o(gpio_a_ext_padoe_o)

            );

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

  // GPIO b

  assign s2_rty_i = 1'b0;

  wire        gpio_b_inta_o;

  wire        gpio_b_clk_i;

  wire [31:0] gpio_b_aux_i;

  wire [31:0] gpio_b_ext_pad_i;

  wire [31:0] gpio_b_ext_pad_o;

  wire [31:0] gpio_b_ext_padoe_o;

  gpio_top

    i_gpio_b(

                  .wb_clk_i(sys_clk),

                  .wb_rst_i(sys_rst),

                  .wb_cyc_i(s2_cyc_o),

                  .wb_adr_i( {24'b0, s2_addr_o[7:0]} ),

                  .wb_dat_i(s2_data_o),

                  .wb_sel_i(s2_sel_o),

                  .wb_we_i(s2_we_o),

                  .wb_stb_i(s2_stb_o),

                  .wb_dat_o(s2_data_i),

                  .wb_ack_o(s2_ack_i),

                  .wb_err_o(s2_err_i),

                  .wb_inta_o(gpio_b_inta_o),

`ifdef GPIO_AUX_IMPLEMENT

                  .aux_i(gpio_b_aux_i),

`endif // GPIO_AUX_IMPLEMENT

`ifdef GPIO_CLKPAD

              .clk_pad_i(gpio_b_clk_i),

`endif //  GPIO_CLKPAD

                  .ext_pad_i(gpio_b_ext_pad_i),

                  .ext_pad_o(gpio_b_ext_pad_o),

                  .ext_padoe_o(gpio_b_ext_padoe_o)

            );

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

  // IO pads

  genvar i;

  // gpio a

  wire [31:0] gpio_a_io_buffer_o;

  generate for( i = 0; i < 32; i = i + 1 )

    begin: gpio_a_pads

      assign gpio_a_io_buffer_o[i] = gpio_a_ext_padoe_o[i] ? gpio_a_ext_pad_o[i] : 1'bz;

    end

  endgenerate

  // gpio b

  wire [31:0] gpio_b_io_buffer_o;

  generate for( i = 0; i < 32; i = i + 1 )

    begin: gpio_b_pads

      assign gpio_b_io_buffer_o[i] = gpio_b_ext_padoe_o[i] ? gpio_b_ext_pad_o[i] : 1'bz;

    end

  endgenerate

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

  // outputs

  //  Turn off all display

//   assign  hex0        =   7'h7f;

//   assign  hex1        =   7'h7f;

//   assign  hex2        =   7'h7f;

//   assign  hex3        =   7'h7f;

//   assign  ledg        =   8'hff;

//   assign  ledg        =   fled;

//   assign  ledr        =   10'h000;

  //  All inout port turn to tri-state

  assign  dram_dq     =   16'hzzzz;

  assign  fl_dq       =   8'hzz;

//   assign  sram_dq     =   16'hzzzz;

  assign  sd_dat      =   1'bz;

  assign  i2c_sdat    =   1'bz;

  assign  aud_adclrck =   1'bz;

  assign  aud_daclrck =   1'bz;

  assign  aud_bclk    =   1'bz;

//   assign  gpio_0      =   36'hzzzzzzzzz;

//   assign  gpio_1      =   36'hzzzzzzzzz;

  assign hex0             = gpio_a_io_buffer_o[6:0];

  assign hex1             = gpio_a_io_buffer_o[14:8];

  assign hex2             = gpio_a_io_buffer_o[22:16];

  assign hex3             = gpio_a_io_buffer_o[30:24];

  assign gpio_a_aux_i     = 32'b0;

  assign gpio_a_ext_pad_i = 32'b0;

  assign ledg             = gpio_b_io_buffer_o[7:0];

  assign ledr             = gpio_b_io_buffer_o[17:8];

  assign gpio_b_aux_i     = { 24'b0, fled } ;

  assign gpio_b_ext_pad_i = { key, sw, 18'b0};

endmodule