Subversion Repositories robust_axi2apb

<##//////////////////////////////////////////////////////////////////
////                                                             ////
////  Author: Eyal Hochberg                                      ////
////          eyal@provartec.com                                 ////
////                                                             ////
////  Downloaded from: http://www.opencores.org                  ////
/////////////////////////////////////////////////////////////////////
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//// Copyright (C) 2010 Provartec LTD                            ////
//// www.provartec.com                                           ////
//// info@provartec.com                                          ////
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//// This source file is free software; you can redistribute it  ////
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//// PURPOSE.  See the GNU Lesser General Public License for more////
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//////////////////////////////////////////////////////////////////##>
 
INCLUDE def_axi2apb.txt
OUTFILE PREFIX_rd.v
 
module  PREFIX_rd (PORTS);
 
   input 		          clk;
   input 		          reset;
 
   input                  GROUP_APB3;
 
   input                  cmd_err;
   input [ID_BITS-1:0]    cmd_id;
   output                 finish_rd;
 
   port                   RGROUP_APB_AXI_R;
 
 
   parameter              RESP_OK     = 2'b00;
   parameter              RESP_SLVERR = 2'b10;
   parameter              RESP_DECERR = 2'b11;
 
   reg                    RGROUP_APB_AXI_R.OUT;
 
 
   assign                 finish_rd = RVALID & RREADY & RLAST;
 
   always @(posedge clk or posedge reset)
     if (reset)
	   begin
         RGROUP_APB_AXI_R.OUT <= #FFD {GROUP_APB_AXI_R.OUT.WIDTH{1'b0}};
	   end
	 else if (finish_rd)
	   begin
         RGROUP_APB_AXI_R.OUT <= #FFD {GROUP_APB_AXI_R.OUT.WIDTH{1'b0}};
	   end
	 else if (psel & penable & (~pwrite) & pready)
	   begin
	     RID    <= #FFD cmd_id;
		 RDATA  <= #FFD prdata;
		 RRESP  <= #FFD cmd_err ? RESP_SLVERR : pslverr ? RESP_DECERR : RESP_OK;
		 RLAST  <= #FFD 1'b1;
		 RVALID <= #FFD 1'b1;
	   end
 
endmodule