Subversion Repositories qaz_libs

//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file is free software; you can redistribute it   ////
//// and/or modify it under the terms of the GNU Lesser General   ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source 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.  See the GNU Lesser General Public License for more ////
//// details.                                                     ////
////                                                              ////
//// You should have received a copy of the GNU Lesser General    ////
//// Public License along with this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////


interface
  axis_if
  #(  N     // data bus width in bytes
  ,   I = 1 // TID width
  ,   D = 1 // TDEST width
  ,   U = 1 // TUSER width
  )
  ( input aclk
  , input aresetn
  );
  wire              tvalid;
  wire              tready;
  wire  [(8*N)-1:0] tdata;
  wire  [N-1:0]     tstrb;
  wire  [N-1:0]     tkeep;
  wire              tlast;
  wire  [I-1:0]     tid;
  wire  [D-1:0]     tdest;
  wire  [U-1:0]     tuser;

// --------------------------------------------------------------------
// synthesis translate_off
  default clocking cb_m @(posedge aclk);
    input   aresetn;
    output  tvalid;
    input   tready;
    output  tdata;
    output  tstrb;
    output  tkeep;
    output  tlast;
    output  tid;
    output  tdest;
    output  tuser;
  endclocking

  // --------------------------------------------------------------------
  clocking cb_s @(posedge aclk);
    input   aresetn;
    input   tvalid;
    output  tready;
    input   tdata;
    input   tstrb;
    input   tkeep;
    input   tlast;
    input   tid;
    input   tdest;
    input   tuser;
  endclocking
// synthesis translate_on
// --------------------------------------------------------------------

  // --------------------------------------------------------------------
  //
`ifdef USE_MOD_PORTS
    modport
      master
      (
// --------------------------------------------------------------------
// synthesis translate_off
          clocking  cb_m,
// synthesis translate_on
// --------------------------------------------------------------------
        input     aresetn,
        input     aclk,
        output    tvalid,
        input     tready,
        output    tdata,
        output    tstrb,
        output    tkeep,
        output    tlast,
        output    tid,
        output    tdest,
        output    tuser
      );

    // --------------------------------------------------------------------
    modport
      slave
      (
// --------------------------------------------------------------------
// synthesis translate_off
          clocking  cb_s,
// synthesis translate_on
// --------------------------------------------------------------------
        input     aresetn,
        input     aclk,
        input     tvalid,
        output    tready,
        input     tdata,
        input     tstrb,
        input     tkeep,
        input     tlast,
        input     tid,
        input     tdest,
        input     tuser
      );
`endif

// --------------------------------------------------------------------
// synthesis translate_off
  task zero_cycle_delay;
    ##0;
  endtask: zero_cycle_delay
// synthesis translate_on
// --------------------------------------------------------------------

// --------------------------------------------------------------------
endinterface: axis_if