pluto_hdl_adi/library/axi_ad9265/axi_ad9265_pnmon.v

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// ***************************************************************************
// ***************************************************************************
// Copyright 2011(c) Analog Devices, Inc.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in
// the documentation and/or other materials provided with the
// distribution.
// - Neither the name of Analog Devices, Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
// - The use of this software may or may not infringe the patent rights
// of one or more patent holders. This license does not release you
// from the requirement that you obtain separate licenses from these
// patent holders to use this software.
// - Use of the software either in source or binary form, must be run
// on or directly connected to an Analog Devices Inc. component.
//
// THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED.
//
// IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY
// RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
// PN monitors
`timescale 1ns/100ps
module axi_ad9265_pnmon (
// adc interface
adc_clk,
adc_data,
// pn out of sync and error
adc_pn_oos,
adc_pn_err,
adc_pnseq_sel);
// adc interface
input adc_clk;
input [15:0] adc_data;
// pn out of sync and error
output adc_pn_oos;
output adc_pn_err;
input [ 3:0] adc_pnseq_sel;
// internal registers
reg adc_valid_in = 'd0;
reg [31:0] adc_pn_data_in = 'd0;
reg [31:0] adc_pn_data_pn = 'd0;
// internal signals
wire [31:0] adc_pn_data_pn_s;
// PN23 function
function [31:0] pn23;
input [31:0] din;
reg [31:0] dout;
begin
dout[31] = din[22] ^ din[17];
dout[30] = din[21] ^ din[16];
dout[29] = din[20] ^ din[15];
dout[28] = din[19] ^ din[14];
dout[27] = din[18] ^ din[13];
dout[26] = din[17] ^ din[12];
dout[25] = din[16] ^ din[11];
dout[24] = din[15] ^ din[10];
dout[23] = din[14] ^ din[ 9];
dout[22] = din[13] ^ din[ 8];
dout[21] = din[12] ^ din[ 7];
dout[20] = din[11] ^ din[ 6];
dout[19] = din[10] ^ din[ 5];
dout[18] = din[ 9] ^ din[ 4];
dout[17] = din[ 8] ^ din[ 3];
dout[16] = din[ 7] ^ din[ 2];
dout[15] = din[ 6] ^ din[ 1];
dout[14] = din[ 5] ^ din[ 0];
dout[13] = din[ 4] ^ din[22] ^ din[17];
dout[12] = din[ 3] ^ din[21] ^ din[16];
dout[11] = din[ 2] ^ din[20] ^ din[15];
dout[10] = din[ 1] ^ din[19] ^ din[14];
dout[ 9] = din[ 0] ^ din[18] ^ din[13];
dout[ 8] = din[22] ^ din[12];
dout[ 7] = din[21] ^ din[11];
dout[ 6] = din[20] ^ din[10];
dout[ 5] = din[19] ^ din[ 9];
dout[ 4] = din[18] ^ din[ 8];
dout[ 3] = din[17] ^ din[ 7];
dout[ 2] = din[16] ^ din[ 6];
dout[ 1] = din[15] ^ din[ 5];
dout[ 0] = din[14] ^ din[ 4];
pn23 = dout;
end
endfunction
// PN9 function
function [31:0] pn9;
input [31:0] din;
reg [31:0] dout;
begin
dout[31] = din[ 8] ^ din[ 4];
dout[30] = din[ 7] ^ din[ 3];
dout[29] = din[ 6] ^ din[ 2];
dout[28] = din[ 5] ^ din[ 1];
dout[27] = din[ 4] ^ din[ 0];
dout[26] = din[ 3] ^ din[ 8] ^ din[ 4];
dout[25] = din[ 2] ^ din[ 7] ^ din[ 3];
dout[24] = din[ 1] ^ din[ 6] ^ din[ 2];
dout[23] = din[ 0] ^ din[ 5] ^ din[ 1];
dout[22] = din[ 8] ^ din[ 0];
dout[21] = din[ 7] ^ din[ 8] ^ din[ 4];
dout[20] = din[ 6] ^ din[ 7] ^ din[ 3];
dout[19] = din[ 5] ^ din[ 6] ^ din[ 2];
dout[18] = din[ 4] ^ din[ 5] ^ din[ 1];
dout[17] = din[ 3] ^ din[ 4] ^ din[ 0];
dout[16] = din[ 2] ^ din[ 3] ^ din[ 8] ^ din[ 4];
dout[15] = din[ 1] ^ din[ 2] ^ din[ 7] ^ din[ 3];
dout[14] = din[ 0] ^ din[ 1] ^ din[ 6] ^ din[ 2];
dout[13] = din[ 8] ^ din[ 0] ^ din[ 4] ^ din[ 5] ^ din[ 1];
dout[12] = din[ 7] ^ din[ 8] ^ din[ 3] ^ din[ 0];
dout[11] = din[ 6] ^ din[ 7] ^ din[ 2] ^ din[ 8] ^ din[ 4];
dout[10] = din[ 5] ^ din[ 6] ^ din[ 1] ^ din[ 7] ^ din[ 3];
dout[ 9] = din[ 4] ^ din[ 5] ^ din[ 0] ^ din[ 6] ^ din[ 2];
dout[ 8] = din[ 3] ^ din[ 8] ^ din[ 5] ^ din[ 1];
dout[ 7] = din[ 2] ^ din[ 4] ^ din[ 7] ^ din[ 0];
dout[ 6] = din[ 1] ^ din[ 3] ^ din[ 6] ^ din[ 8] ^ din[ 4];
dout[ 5] = din[ 0] ^ din[ 2] ^ din[ 5] ^ din[ 7] ^ din[ 3];
dout[ 4] = din[ 8] ^ din[ 1] ^ din[ 6] ^ din[ 2];
dout[ 3] = din[ 7] ^ din[ 0] ^ din[ 5] ^ din[ 1];
dout[ 2] = din[ 6] ^ din[ 8] ^ din[ 0];
dout[ 1] = din[5] ^ din[7] ^ din[8] ^ din[4];
dout[ 0] = din[4] ^ din[6] ^ din[7] ^ din[3];
pn9 = dout;
end
endfunction
// pn sequence select
assign adc_pn_data_pn_s = (adc_pn_oos == 1'b1) ? adc_pn_data_in : adc_pn_data_pn;
always @(posedge adc_clk) begin
adc_valid_in <= ~adc_valid_in;
adc_pn_data_in <= {adc_pn_data_in[15:0], adc_data[15:0]};
if(adc_valid_in == 1'b1) begin
if (adc_pnseq_sel == 4'd0) begin
adc_pn_data_pn <= pn9(adc_pn_data_pn_s);
end else begin
adc_pn_data_pn <= pn23(adc_pn_data_pn_s);
end
end
end
// pn oos & pn err
ad_pnmon #(.DATA_WIDTH(32)) i_pnmon (
.adc_clk (adc_clk),
.adc_valid_in (adc_valid_in),
.adc_data_in (adc_pn_data_in),
.adc_data_pn (adc_pn_data_pn),
.adc_pn_oos (adc_pn_oos),
.adc_pn_err (adc_pn_err));
endmodule
// ***************************************************************************
// ***************************************************************************