// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// Each core or library found in this collection may have its own licensing terms. 
// The user should keep this in in mind while exploring these cores. 
//
// Redistribution and use in source and binary forms,
// with or without modification of this file, are permitted under the terms of either
//  (at the option of the user):
//
//   1. The GNU General Public License version 2 as published by the
//      Free Software Foundation, which can be found in the top level directory, or at:
// https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
//
// OR
//
//   2.  An ADI specific BSD license as noted in the top level directory, or on-line at:
// https://github.com/analogdevicesinc/hdl/blob/dev/LICENSE
//
// ***************************************************************************
// ***************************************************************************

`timescale 1ns/100ps

module system_top (

  input                   sys_rst,
  input                   sys_clk_p,
  input                   sys_clk_n,

  input                   uart_sin,
  output                  uart_sout,

  output      [13:0]      ddr3_addr,
  output      [ 2:0]      ddr3_ba,
  output                  ddr3_cas_n,
  output      [ 0:0]      ddr3_ck_n,
  output      [ 0:0]      ddr3_ck_p,
  output      [ 0:0]      ddr3_cke,
  output      [ 0:0]      ddr3_cs_n,
  output      [ 7:0]      ddr3_dm,
  inout       [63:0]      ddr3_dq,
  inout       [ 7:0]      ddr3_dqs_n,
  inout       [ 7:0]      ddr3_dqs_p,
  output      [ 0:0]      ddr3_odt,
  output                  ddr3_ras_n,
  output                  ddr3_reset_n,
  output                  ddr3_we_n,

  input                   sgmii_rxp,
  input                   sgmii_rxn,
  output                  sgmii_txp,
  output                  sgmii_txn,

  output                  phy_rstn,
  input                   mgt_clk_p,
  input                   mgt_clk_n,
  output                  mdio_mdc,
  inout                   mdio_mdio,

  output                  fan_pwm,

  output      [26:1]      linear_flash_addr,
  output                  linear_flash_adv_ldn,
  output                  linear_flash_ce_n,
  output                  linear_flash_oen,
  output                  linear_flash_wen,
  inout       [15:0]      linear_flash_dq_io,

  inout       [ 6:0]      gpio_lcd,
  inout       [20:0]      gpio_bd,

  output                  iic_rstn,
  inout                   iic_scl,
  inout                   iic_sda,

  input                   rx_ref_clk_p,
  input                   rx_ref_clk_n,
  output                  rx_sysref,
  output                  rx_sync,
  input       [ 3:0]      rx_data_p,
  input       [ 3:0]      rx_data_n,

  output                  spi_csn_0,
  output                  spi_clk,
  inout                   spi_sdio);

  // internal signals

  wire    [63:0]  gpio_i;
  wire    [63:0]  gpio_o;
  wire    [63:0]  gpio_t;
  wire    [ 7:0]  spi_csn;
  wire            spi_clk;
  wire            spi_mosi;
  wire            spi_miso;
  wire            rx_ref_clk;
  wire    [31:0]  mb_intrs;
  wire            rx_clk;
  wire            rx_sysref;

  assign ddr3_1_p = 2'b11;
  assign ddr3_1_n = 3'b000;
  assign iic_rstn = 1'b1;
  assign fan_pwm = 1'b1;
  assign spi_csn_0 = spi_csn[0];

  // instantiations

  IBUFDS_GTE2 i_ibufds_rx_ref_clk (
    .CEB (1'd0),
    .I (rx_ref_clk_p),
    .IB (rx_ref_clk_n),
    .O (rx_ref_clk),
    .ODIV2 ());

  ad_iobuf #(.DATA_WIDTH(21)) i_iobuf (
    .dio_t (gpio_t[20:0]),
    .dio_i (gpio_o[20:0]),
    .dio_o (gpio_i[20:0]),
    .dio_p (gpio_bd));

  fmcjesdadc1_spi i_fmcjesdadc1_spi (
    .spi_csn (spi_csn_0),
    .spi_clk (spi_clk),
    .spi_mosi (spi_mosi),
    .spi_miso (spi_miso),
    .spi_sdio (spi_sdio));

  ad_sysref_gen #(.SYSREF_PERIOD(64)) i_sysref (
    .core_clk (rx_clk),
    .sysref_en (gpio_o[32]),
    .sysref_out (rx_sysref));

  // instantiations

  system_wrapper i_system_wrapper (
    .ddr3_addr (ddr3_addr),
    .ddr3_ba (ddr3_ba),
    .ddr3_cas_n (ddr3_cas_n),
    .ddr3_ck_n (ddr3_ck_n),
    .ddr3_ck_p (ddr3_ck_p),
    .ddr3_cke (ddr3_cke),
    .ddr3_cs_n (ddr3_cs_n),
    .ddr3_dm (ddr3_dm),
    .ddr3_dq (ddr3_dq),
    .ddr3_dqs_n (ddr3_dqs_n),
    .ddr3_dqs_p (ddr3_dqs_p),
    .ddr3_odt (ddr3_odt),
    .ddr3_ras_n (ddr3_ras_n),
    .ddr3_reset_n (ddr3_reset_n),
    .ddr3_we_n (ddr3_we_n),
    .linear_flash_addr (linear_flash_addr),
    .linear_flash_adv_ldn (linear_flash_adv_ldn),
    .linear_flash_ce_n (linear_flash_ce_n),
    .linear_flash_oen (linear_flash_oen),
    .linear_flash_wen (linear_flash_wen),
    .linear_flash_dq_io(linear_flash_dq_io),
    .gpio0_i (gpio_i[31:0]),
    .gpio0_o (gpio_o[31:0]),
    .gpio0_t (gpio_t[31:0]),
    .gpio1_i (gpio_i[63:32]),
    .gpio1_o (gpio_o[63:32]),
    .gpio1_t (gpio_t[63:32]),
    .gpio_lcd_tri_io (gpio_lcd),
    .iic_main_scl_io (iic_scl),
    .iic_main_sda_io (iic_sda),
    .mb_intr_06 (1'b0),
    .mb_intr_07 (1'b0),
    .mb_intr_08 (1'b0),
    .mb_intr_14 (mb_intrs[14]),
    .mb_intr_15 (mb_intrs[15]),
    .mdio_mdc (mdio_mdc),
    .mdio_mdio_io (mdio_mdio),
    .mgt_clk_clk_n (mgt_clk_n),
    .mgt_clk_clk_p (mgt_clk_p),
    .phy_rstn (phy_rstn),
    .phy_sd (1'b1),
    .sgmii_rxn (sgmii_rxn),
    .sgmii_rxp (sgmii_rxp),
    .sgmii_txn (sgmii_txn),
    .sgmii_txp (sgmii_txp),
    .sys_clk_n (sys_clk_n),
    .sys_clk_p (sys_clk_p),
    .sys_rst (sys_rst),
    .uart_sin (uart_sin),
    .uart_sout (uart_sout),
    .rx_data_0_n (rx_data_n[0]),
    .rx_data_0_p (rx_data_p[0]),
    .rx_data_1_n (rx_data_n[1]),
    .rx_data_1_p (rx_data_p[1]),
    .rx_data_2_n (rx_data_n[2]),
    .rx_data_2_p (rx_data_p[2]),
    .rx_data_3_n (rx_data_n[3]),
    .rx_data_3_p (rx_data_p[3]),
    .rx_ref_clk_0 (rx_ref_clk),
    .rx_sync_0 (rx_sync),
    .rx_sysref_0 (rx_sysref),
    .rx_core_clk (rx_clk),
    .spi_clk_i (1'b0),
    .spi_clk_o (spi_clk),
    .spi_csn_i (8'hff),
    .spi_csn_o (spi_csn),
    .spi_sdi_i (spi_miso),
    .spi_sdo_i (1'b0),
    .spi_sdo_o (spi_mosi));

endmodule

// ***************************************************************************
// ***************************************************************************