// ***************************************************************************
// ***************************************************************************
// 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 (
  inout       [14:0]      ddr_addr,
  inout       [ 2:0]      ddr_ba,
  inout                   ddr_cas_n,
  inout                   ddr_ck_n,
  inout                   ddr_ck_p,
  inout                   ddr_cke,
  inout                   ddr_cs_n,
  inout       [ 3:0]      ddr_dm,
  inout       [31:0]      ddr_dq,
  inout       [ 3:0]      ddr_dqs_n,
  inout       [ 3:0]      ddr_dqs_p,
  inout                   ddr_odt,
  inout                   ddr_ras_n,
  inout                   ddr_reset_n,
  inout                   ddr_we_n,

  inout                   fixed_io_ddr_vrn,
  inout                   fixed_io_ddr_vrp,
  inout       [53:0]      fixed_io_mio,
  inout                   fixed_io_ps_clk,
  inout                   fixed_io_ps_porb,
  inout                   fixed_io_ps_srstb,

  inout       [14:0]      gpio_bd,

  output                  hdmi_out_clk,
  output                  hdmi_vsync,
  output                  hdmi_hsync,
  output                  hdmi_data_e,
  output      [23:0]      hdmi_data,

  output                  spdif,

  inout                   iic_scl,
  inout                   iic_sda,

  input                   adc_clk_in_n,
  input                   adc_clk_in_p,
  input       [ 7:0]      adc_data_in_n,
  input       [ 7:0]      adc_data_in_p,
  input                   adc_data_or_n,
  input                   adc_data_or_p,
  output                  spi_clk,
  output                  spi_csn_adc,
  output                  spi_csn_clk,
  inout                   spi_sdio);

// internal signals
wire   [ 1:0]   spi_csn;
wire            spi_miso;
wire            spi_mosi;
wire    [63:0]  gpio_i;
wire    [63:0]  gpio_o;
wire    [63:0]  gpio_t;
wire    [ 2:0]  spi0_csn;
wire            spi0_clk;
wire            spi0_mosi;
wire            spi0_miso;
wire    [ 2:0]  spi1_csn;
wire            spi1_clk;
wire            spi1_mosi;
wire            spi1_miso;

// instantiations

assign spi_csn_adc = spi0_csn[0];
assign spi_csn_clk = spi0_csn[1];
assign spi_clk = spi0_clk;
assign spi_mosi = spi0_mosi;
assign spi0_miso = spi_miso;

ad_iobuf #(.DATA_WIDTH(15)) iobuf_gpio_bd (
  .dio_i (gpio_o[14:0]),
  .dio_o (gpio_i[14:0]),
  .dio_t (gpio_t[14:0]),
  .dio_p (gpio_bd));

ad9265_spi i_spi (
    .spi_csn(spi0_csn[1:0]),
    .spi_clk(spi_clk),
    .spi_mosi(spi_mosi),
    .spi_miso(spi_miso),
    .spi_sdio(spi_sdio)
    );

system_wrapper i_system_wrapper (
    .ddr_addr(ddr_addr),
    .ddr_ba(ddr_ba),
    .ddr_cas_n(ddr_cas_n),
    .ddr_ck_n(ddr_ck_n),
    .ddr_ck_p(ddr_ck_p),
    .ddr_cke(ddr_cke),
    .ddr_cs_n(ddr_cs_n),
    .ddr_dm(ddr_dm),
    .ddr_dq(ddr_dq),
    .ddr_dqs_n(ddr_dqs_n),
    .ddr_dqs_p(ddr_dqs_p),
    .ddr_odt(ddr_odt),
    .ddr_ras_n(ddr_ras_n),
    .ddr_reset_n(ddr_reset_n),
    .ddr_we_n(ddr_we_n),
    .fixed_io_ddr_vrn (fixed_io_ddr_vrn),
    .fixed_io_ddr_vrp (fixed_io_ddr_vrp),
    .fixed_io_mio (fixed_io_mio),
    .fixed_io_ps_clk (fixed_io_ps_clk),
    .fixed_io_ps_porb (fixed_io_ps_porb),
    .fixed_io_ps_srstb (fixed_io_ps_srstb),
    .gpio_i (gpio_i),
    .gpio_o (gpio_o),
    .gpio_t (gpio_t),
    .hdmi_data (hdmi_data),
    .hdmi_data_e (hdmi_data_e),
    .hdmi_hsync (hdmi_hsync),
    .hdmi_out_clk (hdmi_out_clk),
    .hdmi_vsync (hdmi_vsync),
    .iic_main_scl_io (iic_scl),
    .iic_main_sda_io (iic_sda),
    .ps_intr_00 (1'b0),
    .ps_intr_01 (1'b0),
    .ps_intr_02 (1'b0),
    .ps_intr_03 (1'b0),
    .ps_intr_04 (1'b0),
    .ps_intr_05 (1'b0),
    .ps_intr_06 (1'b0),
    .ps_intr_07 (1'b0),
    .ps_intr_08 (1'b0),
    .ps_intr_09 (1'b0),
    .ps_intr_10 (1'b0),
    .ps_intr_11 (1'b0),
    .ps_intr_12 (1'b0),
    .spdif (spdif),
    .adc_clk_in_n(adc_clk_in_n),
    .adc_clk_in_p(adc_clk_in_p),
    .adc_data_in_n(adc_data_in_n),
    .adc_data_in_p(adc_data_in_p),
    .adc_data_or_n(adc_data_or_n),
    .adc_data_or_p(adc_data_or_p),
    .spi0_clk_i (spi0_clk),
    .spi0_clk_o (spi0_clk),
    .spi0_csn_0_o (spi0_csn[0]),
    .spi0_csn_1_o (spi0_csn[1]),
    .spi0_csn_2_o (spi0_csn[2]),
    .spi0_csn_i (1'b1),
    .spi0_sdi_i (spi0_miso),
    .spi0_sdo_i (spi0_mosi),
    .spi0_sdo_o (spi0_mosi),
    .spi1_clk_i (spi1_clk),
    .spi1_clk_o (spi1_clk),
    .spi1_csn_0_o (spi1_csn[0]),
    .spi1_csn_1_o (spi1_csn[1]),
    .spi1_csn_2_o (spi1_csn[2]),
    .spi1_csn_i (1'b1),
    .spi1_sdi_i (1'b1),
    .spi1_sdo_i (spi1_mosi),
    .spi1_sdo_o (spi1_mosi));

endmodule

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