//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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//// ////
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//// ////
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//// Copyright (C) 2017 Authors and OPENCORES.ORG ////
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//// Copyright (C) 2017 Authors and OPENCORES.ORG ////
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//// ////
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//// ////
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//// This source file may be used and distributed without ////
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//// This source file may be used and distributed without ////
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//// restriction provided that this copyright statement is not ////
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//// restriction provided that this copyright statement is not ////
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//// removed from the file and that any derivative work contains ////
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//// removed from the file and that any derivative work contains ////
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//// the original copyright notice and the associated disclaimer. ////
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//// the original copyright notice and the associated disclaimer. ////
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//// ////
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//// ////
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//// This source file is free software; you can redistribute it ////
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//// This source file is free software; you can redistribute it ////
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//// and/or modify it under the terms of the GNU Lesser General ////
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//// and/or modify it under the terms of the GNU Lesser General ////
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//// Public License as published by the Free Software Foundation; ////
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//// Public License as published by the Free Software Foundation; ////
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//// either version 2.1 of the License, or (at your option) any ////
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//// either version 2.1 of the License, or (at your option) any ////
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//// later version. ////
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//// later version. ////
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//// ////
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//// ////
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//// This source is distributed in the hope that it will be ////
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//// This source is distributed in the hope that it will be ////
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//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
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//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
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//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
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//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
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//// PURPOSE. See the GNU Lesser General Public License for more ////
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//// PURPOSE. See the GNU Lesser General Public License for more ////
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//// details. ////
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//// details. ////
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//// ////
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//// ////
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//// You should have received a copy of the GNU Lesser General ////
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//// You should have received a copy of the GNU Lesser General ////
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//// Public License along with this source; if not, download it ////
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//// Public License along with this source; if not, download it ////
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//// from http://www.opencores.org/lgpl.shtml ////
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//// from http://www.opencores.org/lgpl.shtml ////
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//// ////
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//// ////
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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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module
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module
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axis_switch
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axis_switch
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#(
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#(
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N, // data bus width in bytes
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N, // data bus width in bytes
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I = 1, // TID width
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I = 1, // TID width
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D = 1, // TDEST width
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D = 1, // TDEST width
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U = 1 // TUSER width
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U = 1 // TUSER width
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)
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)
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(
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(
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input select,
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input select,
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axis_if axis_in,
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axis_if axis_in,
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axis_if axis_out[1:0],
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axis_if axis_out[1:0],
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input aclk,
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input aclk,
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input aresetn
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input aresetn
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);
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);
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_fanout[1:0](.*);
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axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_fanout[1:0](.*);
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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assign axis_fanout[0].tdata = axis_in.tdata;
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assign axis_fanout[0].tdata = axis_in.tdata;
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assign axis_fanout[0].tstrb = axis_in.tstrb;
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assign axis_fanout[0].tstrb = axis_in.tstrb;
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assign axis_fanout[0].tkeep = axis_in.tkeep;
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assign axis_fanout[0].tkeep = axis_in.tkeep;
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assign axis_fanout[0].tlast = axis_in.tlast;
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assign axis_fanout[0].tlast = axis_in.tlast;
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assign axis_fanout[0].tid = axis_in.tid;
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assign axis_fanout[0].tid = axis_in.tid;
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assign axis_fanout[0].tdest = axis_in.tdest;
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assign axis_fanout[0].tdest = axis_in.tdest;
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assign axis_fanout[0].tuser = axis_in.tuser;
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assign axis_fanout[0].tuser = axis_in.tuser;
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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assign axis_fanout[1].tdata = axis_in.tdata;
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assign axis_fanout[1].tdata = axis_in.tdata;
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assign axis_fanout[1].tstrb = axis_in.tstrb;
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assign axis_fanout[1].tstrb = axis_in.tstrb;
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assign axis_fanout[1].tkeep = axis_in.tkeep;
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assign axis_fanout[1].tkeep = axis_in.tkeep;
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assign axis_fanout[1].tlast = axis_in.tlast;
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assign axis_fanout[1].tlast = axis_in.tlast;
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assign axis_fanout[1].tid = axis_in.tid;
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assign axis_fanout[1].tid = axis_in.tid;
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assign axis_fanout[1].tdest = axis_in.tdest;
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assign axis_fanout[1].tdest = axis_in.tdest;
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assign axis_fanout[1].tuser = axis_in.tuser;
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assign axis_fanout[1].tuser = axis_in.tuser;
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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assign axis_in.tready = select ? axis_fanout[1].tready : axis_fanout[0].tready;
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assign axis_in.tready = select ? axis_fanout[1].tready : axis_fanout[0].tready;
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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assign axis_fanout[0].tvalid = axis_in.tvalid & (select == 0);
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assign axis_fanout[0].tvalid = axis_in.tvalid & (select == 0);
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assign axis_fanout[1].tvalid = axis_in.tvalid & (select == 1);
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assign axis_fanout[1].tvalid = axis_in.tvalid & (select == 1);
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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defparam axis_register_slice_lo.N = N; // why are needed these for recursive modules?
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defparam axis_register_slice_lo.N = N; // why are these needed for recursive modules?
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defparam axis_register_slice_lo.I = I;
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defparam axis_register_slice_lo.I = I;
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defparam axis_register_slice_lo.D = D;
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defparam axis_register_slice_lo.D = D;
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defparam axis_register_slice_lo.U = U;
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defparam axis_register_slice_lo.U = U;
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defparam axis_register_slice_lo.USE_TSTRB = 0;
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defparam axis_register_slice_lo.USE_TSTRB = 0;
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defparam axis_register_slice_lo.USE_TKEEP = 0;
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defparam axis_register_slice_lo.USE_TKEEP = 0;
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axis_register_slice
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axis_register_slice
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// #(
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// #(
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// .N(N),
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// .N(N),
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// .I(I),
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// .I(I),
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// .D(D),
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// .D(D),
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// .U(U),
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// .U(U),
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// .USE_TSTRB(0),
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// .USE_TSTRB(0),
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// .USE_TKEEP(0)
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// .USE_TKEEP(0)
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// )
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// )
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axis_register_slice_lo
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axis_register_slice_lo
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(
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(
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.axis_in(axis_fanout[0]),
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.axis_in(axis_fanout[0]),
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.axis_out(axis_out[0]),
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.axis_out(axis_out[0]),
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.*
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.*
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);
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);
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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// why does questasim need these for recursive modules?
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// why does questasim need these for recursive modules?
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defparam axis_register_slice_hi.N = N;
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defparam axis_register_slice_hi.N = N;
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defparam axis_register_slice_hi.I = I;
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defparam axis_register_slice_hi.I = I;
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defparam axis_register_slice_hi.D = D;
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defparam axis_register_slice_hi.D = D;
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defparam axis_register_slice_hi.U = U;
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defparam axis_register_slice_hi.U = U;
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defparam axis_register_slice_hi.USE_TSTRB = 0;
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defparam axis_register_slice_hi.USE_TSTRB = 0;
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defparam axis_register_slice_hi.USE_TKEEP = 0;
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defparam axis_register_slice_hi.USE_TKEEP = 0;
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axis_register_slice
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axis_register_slice
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// #(
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// #(
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// .N(N),
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// .N(N),
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// .I(I),
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// .I(I),
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// .D(D),
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// .D(D),
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// .U(U),
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// .U(U),
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// .USE_TSTRB(0),
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// .USE_TSTRB(0),
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// .USE_TKEEP(0)
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// .USE_TKEEP(0)
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// )
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// )
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axis_register_slice_hi
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axis_register_slice_hi
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(
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(
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.axis_in(axis_fanout[1]),
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.axis_in(axis_fanout[1]),
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.axis_out(axis_out[1]),
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.axis_out(axis_out[1]),
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.*
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.*
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);
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);
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// --------------------------------------------------------------------
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// --------------------------------------------------------------------
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//
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//
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endmodule
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endmodule
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