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authorMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
committerMartin Braun <martin.braun@ettus.com>2014-10-07 11:25:20 +0200
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parent3b66804e41891e358c790b453a7a59ec7462dba4 (diff)
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Removed copy of FPGA source files.
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-// $Header: /devl/xcs/repo/env/Databases/CAEInterfaces/verunilibs/data/spartan4/IDDR2.v,v 1.1 2004/06/21 21:45:36 wloo Exp $
-///////////////////////////////////////////////////////////////////////////////
-// Copyright (c) 1995/2004 Xilinx, Inc.
-// All Right Reserved.
-///////////////////////////////////////////////////////////////////////////////
-// ____ ____
-// / /\/ /
-// /___/ \ / Vendor : Xilinx
-// \ \ \/ Version : 10.1
-// \ \ Description : Xilinx Functional Simulation Library Component
-// / / Dual Data Rate Input D Flip-Flop
-// /___/ /\ Filename : IDDR2.v
-// \ \ / \ Timestamp : Thu Mar 25 16:43:51 PST 2004
-// \___\/\___\
-//
-// Revision:
-// 03/23/04 - Initial version.
-
-`timescale 1 ps / 1 ps
-
-module IDDR2 (Q0, Q1, C0, C1, CE, D, R, S);
-
- output Q0;
- output Q1;
-
- input C0;
- input C1;
- input CE;
- input D;
- tri0 GSR = glbl.GSR;
- input R;
- input S;
-
- parameter DDR_ALIGNMENT = "NONE";
- parameter INIT_Q0 = 1'b0;
- parameter INIT_Q1 = 1'b0;
- parameter SRTYPE = "SYNC";
-
- reg q0_out, q1_out;
- reg q0_out_int, q1_out_int;
- reg q0_c1_out_int, q1_c0_out_int;
-
- buf buf_q0 (Q0, q0_out);
- buf buf_q1 (Q1, q1_out);
-
-
- initial begin
-
- if ((INIT_Q0 != 1'b0) && (INIT_Q0 != 1'b1)) begin
- $display("Attribute Syntax Error : The attribute INIT_Q0 on IDDR2 instance %m is set to %d. Legal values for this attribute are 0 or 1.", INIT_Q0);
- $finish;
- end
-
- if ((INIT_Q1 != 1'b0) && (INIT_Q1 != 1'b1)) begin
- $display("Attribute Syntax Error : The attribute INIT_Q0 on IDDR2 instance %m is set to %d. Legal values for this attribute are 0 or 1.", INIT_Q1);
- $finish;
- end
-
- if ((DDR_ALIGNMENT != "C1") && (DDR_ALIGNMENT != "C0") && (DDR_ALIGNMENT != "NONE")) begin
- $display("Attribute Syntax Error : The attribute DDR_ALIGNMENT on IDDR2 instance %m is set to %s. Legal values for this attribute are C0, C1 or NONE.", DDR_ALIGNMENT);
- $finish;
- end
-
- if ((SRTYPE != "ASYNC") && (SRTYPE != "SYNC")) begin
- $display("Attribute Syntax Error : The attribute SRTYPE on IDDR2 instance %m is set to %s. Legal values for this attribute are ASYNC or SYNC.", SRTYPE);
- $finish;
- end
-
- end // initial begin
-
-
- always @(GSR or R or S) begin
-
- if (GSR == 1) begin
-
- assign q0_out_int = INIT_Q0;
- assign q1_out_int = INIT_Q1;
- assign q0_c1_out_int = INIT_Q0;
- assign q1_c0_out_int = INIT_Q1;
-
- end
- else begin
-
- deassign q0_out_int;
- deassign q1_out_int;
- deassign q0_c1_out_int;
- deassign q1_c0_out_int;
-
- if (SRTYPE == "ASYNC") begin
- if (R == 1) begin
- assign q0_out_int = 0;
- assign q1_out_int = 0;
- assign q0_c1_out_int = 0;
- assign q1_c0_out_int = 0;
- end
- else if (R == 0 && S == 1) begin
- assign q0_out_int = 1;
- assign q1_out_int = 1;
- assign q0_c1_out_int = 1;
- assign q1_c0_out_int = 1;
- end
- end // if (SRTYPE == "ASYNC")
-
- end // if (GSR == 1'b0)
-
- end // always @ (GSR or R or S)
-
-
- always @(posedge C0) begin
- if (R == 1 && SRTYPE == "SYNC") begin
- q0_out_int <= 0;
- q1_c0_out_int <= 0;
- end
- else if (R == 0 && S == 1 && SRTYPE == "SYNC") begin
- q0_out_int <= 1;
- q1_c0_out_int <= 1;
- end
- else if (CE == 1 && R == 0 && S == 0) begin
- q0_out_int <= D;
- q1_c0_out_int <= q1_out_int;
- end
- end // always @ (posedge C0)
-
-
- always @(posedge C1) begin
- if (R == 1 && SRTYPE == "SYNC") begin
- q1_out_int <= 0;
- q0_c1_out_int <= 0;
- end
- else if (R == 0 && S == 1 && SRTYPE == "SYNC") begin
- q1_out_int <= 1;
- q0_c1_out_int <= 1;
- end
- else if (CE == 1 && R == 0 && S == 0) begin
- q1_out_int <= D;
- q0_c1_out_int <= q0_out_int;
- end
- end // always @ (posedge C1)
-
-
- always @(q0_out_int or q1_out_int or q1_c0_out_int or q0_c1_out_int) begin
-
- case (DDR_ALIGNMENT)
- "NONE" : begin
- q0_out <= q0_out_int;
- q1_out <= q1_out_int;
- end
- "C0" : begin
- q0_out <= q0_out_int;
- q1_out <= q1_c0_out_int;
- end
- "C1" : begin
- q0_out <= q0_c1_out_int;
- q1_out <= q1_out_int;
- end
- endcase // case(DDR_ALIGNMENT)
-
- end // always @ (q0_out_int or q1_out_int or q1_c0_out_int or q0_c1_out_int)
-
-
- specify
-
- if (C0) (C0 => Q0) = (100, 100);
- if (C0) (C0 => Q1) = (100, 100);
- if (C1) (C1 => Q1) = (100, 100);
- if (C1) (C1 => Q0) = (100, 100);
- specparam PATHPULSE$ = 0;
-
- endspecify
-
-endmodule // IDDR2
-