// ***************************************************************************
// ***************************************************************************
// Copyright 2014 - 2017 (c) Analog Devices, Inc. All rights reserved.
//
// In this HDL repository, there are many different and unique modules, consisting
// of various HDL (Verilog or VHDL) components. The individual modules are
// developed independently, and may be accompanied by separate and unique license
// terms.
//
// The user should read each of these license terms, and understand the
// freedoms and responsibilities that he or she has by using this source/core.
//
// This core is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE.
//
// Redistribution and use of source or resulting binaries, with or without modification
// of this file, are permitted under one of the following two license terms:
//
//   1. The GNU General Public License version 2 as published by the
//      Free Software Foundation, which can be found in the top level directory
//      of this repository (LICENSE_GPL2), and also online at:
//      <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
//
// OR
//
//   2. An ADI specific BSD license, which can be found in the top level directory
//      of this repository (LICENSE_ADIBSD), and also on-line at:
//      https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_ADIBSD
//      This will allow to generate bit files and not release the source code,
//      as long as it attaches to an ADI device.
//
// ***************************************************************************
// ***************************************************************************

`timescale 1ns/100ps

module axi_ad9361_rx_channel #(

  // parameters

  parameter   Q_OR_I_N = 0,
  parameter   CHANNEL_ID = 0,
  parameter   DISABLE = 0,
  parameter   USERPORTS_DISABLE = 0,
  parameter   DATAFORMAT_DISABLE = 0,
  parameter   DCFILTER_DISABLE = 0,
  parameter   IQCORRECTION_DISABLE = 0
) (

  // adc interface

  input           adc_clk,
  input           adc_rst,
  input           adc_valid,
  input   [11:0]  adc_data,
  input   [11:0]  adc_data_q,
  input           adc_or,
  input   [11:0]  dac_data,

  // channel interface

  output  [15:0]  adc_dcfilter_data_out,
  input   [15:0]  adc_dcfilter_data_in,
  output          adc_iqcor_valid,
  output  [15:0]  adc_iqcor_data,
  output          adc_enable,
  output          up_adc_pn_err,
  output          up_adc_pn_oos,
  output          up_adc_or,

  // processor interface

  input           up_rstn,
  input           up_clk,
  input           up_wreq,
  input   [13:0]  up_waddr,
  input   [31:0]  up_wdata,
  output          up_wack,
  input           up_rreq,
  input   [13:0]  up_raddr,
  output  [31:0]  up_rdata,
  output          up_rack
);

  // internal signals

  wire    [11:0]  adc_data_s;
  wire            adc_dfmt_valid_s;
  wire    [15:0]  adc_dfmt_data_s;
  wire            adc_dcfilter_valid_s;
  wire    [15:0]  adc_dcfilter_data_s;
  wire            adc_iqcor_enb_s;
  wire            adc_dcfilt_enb_s;
  wire            adc_dfmt_se_s;
  wire            adc_dfmt_type_s;
  wire            adc_dfmt_enable_s;
  wire    [15:0]  adc_dcfilt_offset_s;
  wire    [15:0]  adc_dcfilt_coeff_s;
  wire    [15:0]  adc_iqcor_coeff_1_s;
  wire    [15:0]  adc_iqcor_coeff_2_s;
  wire    [ 3:0]  adc_pnseq_sel_s;
  wire    [ 3:0]  adc_data_sel_s;
  wire            adc_pn_err_s;
  wire            adc_pn_oos_s;

  // data-path disable

  generate
  if (DISABLE == 1) begin
  assign adc_dcfilter_data_out = 16'd0;
  assign adc_iqcor_valid = 1'd0;
  assign adc_iqcor_data = 16'd0;
  assign adc_enable = 1'd0;
  assign up_adc_pn_err = 1'd0;
  assign up_adc_pn_oos = 1'd0;
  assign up_adc_or = 1'd0;
  assign up_wack = 1'd0;
  assign up_rdata = 32'd0;
  assign up_rack = 1'd0;
  end
  endgenerate

  generate
  if (DISABLE == 0) begin

  // iq correction inputs

  assign adc_data_s = (adc_data_sel_s == 4'h0) ? adc_data : dac_data;
  assign adc_dcfilter_data_out = adc_dcfilter_data_s;

  axi_ad9361_rx_pnmon #(
    .Q_OR_I_N (Q_OR_I_N),
    .PRBS_SEL (CHANNEL_ID)
  )  i_rx_pnmon (
    .adc_clk (adc_clk),
    .adc_valid (adc_valid),
    .adc_data_i (adc_data),
    .adc_data_q (adc_data_q),
    .adc_pnseq_sel (adc_pnseq_sel_s),
    .adc_pn_oos (adc_pn_oos_s),
    .adc_pn_err (adc_pn_err_s));

  ad_datafmt #(
    .DATA_WIDTH (12),
    .DISABLE (DATAFORMAT_DISABLE)
  ) i_ad_datafmt (
    .clk (adc_clk),
    .valid (adc_valid),
    .data (adc_data_s),
    .valid_out (adc_dfmt_valid_s),
    .data_out (adc_dfmt_data_s),
    .dfmt_enable (adc_dfmt_enable_s),
    .dfmt_type (adc_dfmt_type_s),
    .dfmt_se (adc_dfmt_se_s));

  ad_dcfilter #(
    .DISABLE (DCFILTER_DISABLE)
  ) i_ad_dcfilter (
    .clk (adc_clk),
    .valid (adc_dfmt_valid_s),
    .data (adc_dfmt_data_s),
    .valid_out (adc_dcfilter_valid_s),
    .data_out (adc_dcfilter_data_s),
    .dcfilt_enb (adc_dcfilt_enb_s),
    .dcfilt_coeff (adc_dcfilt_coeff_s),
    .dcfilt_offset (adc_dcfilt_offset_s));

  ad_iqcor #(
    .Q_OR_I_N (Q_OR_I_N),
    .DISABLE (IQCORRECTION_DISABLE)
  ) i_ad_iqcor (
    .clk (adc_clk),
    .valid (adc_dcfilter_valid_s),
    .data_in (adc_dcfilter_data_s),
    .data_iq (adc_dcfilter_data_in),
    .valid_out (adc_iqcor_valid),
    .data_out (adc_iqcor_data),
    .iqcor_enable (adc_iqcor_enb_s),
    .iqcor_coeff_1 (adc_iqcor_coeff_1_s),
    .iqcor_coeff_2 (adc_iqcor_coeff_2_s));

  up_adc_channel #(
    .CHANNEL_ID (CHANNEL_ID),
    .USERPORTS_DISABLE (USERPORTS_DISABLE),
    .DATAFORMAT_DISABLE (DATAFORMAT_DISABLE),
    .DCFILTER_DISABLE (DCFILTER_DISABLE),
    .IQCORRECTION_DISABLE (IQCORRECTION_DISABLE)
  ) i_up_adc_channel (
    .adc_clk (adc_clk),
    .adc_rst (adc_rst),
    .adc_enable (adc_enable),
    .adc_iqcor_enb (adc_iqcor_enb_s),
    .adc_dcfilt_enb (adc_dcfilt_enb_s),
    .adc_dfmt_se (adc_dfmt_se_s),
    .adc_dfmt_type (adc_dfmt_type_s),
    .adc_dfmt_enable (adc_dfmt_enable_s),
    .adc_dcfilt_offset (adc_dcfilt_offset_s),
    .adc_dcfilt_coeff (adc_dcfilt_coeff_s),
    .adc_iqcor_coeff_1 (adc_iqcor_coeff_1_s),
    .adc_iqcor_coeff_2 (adc_iqcor_coeff_2_s),
    .adc_pnseq_sel (adc_pnseq_sel_s),
    .adc_data_sel (adc_data_sel_s),
    .adc_pn_err (adc_pn_err_s),
    .adc_pn_oos (adc_pn_oos_s),
    .adc_or (adc_or),
    .up_adc_pn_err (up_adc_pn_err),
    .up_adc_pn_oos (up_adc_pn_oos),
    .up_adc_or (up_adc_or),
    .up_usr_datatype_be (),
    .up_usr_datatype_signed (),
    .up_usr_datatype_shift (),
    .up_usr_datatype_total_bits (),
    .up_usr_datatype_bits (),
    .up_usr_decimation_m (),
    .up_usr_decimation_n (),
    .adc_usr_datatype_be (1'b0),
    .adc_usr_datatype_signed (1'b1),
    .adc_usr_datatype_shift (8'd0),
    .adc_usr_datatype_total_bits (8'd16),
    .adc_usr_datatype_bits (8'd16),
    .adc_usr_decimation_m (16'd1),
    .adc_usr_decimation_n (16'd1),
    .up_rstn (up_rstn),
    .up_clk (up_clk),
    .up_wreq (up_wreq),
    .up_waddr (up_waddr),
    .up_wdata (up_wdata),
    .up_wack (up_wack),
    .up_rreq (up_rreq),
    .up_raddr (up_raddr),
    .up_rdata (up_rdata),
    .up_rack (up_rack));

  end
  endgenerate
endmodule