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Diffstat (limited to 'usrp2/models')
| -rw-r--r-- | usrp2/models/IOBUF.v | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/usrp2/models/IOBUF.v b/usrp2/models/IOBUF.v new file mode 100644 index 000000000..1195dfb17 --- /dev/null +++ b/usrp2/models/IOBUF.v @@ -0,0 +1,83 @@ +// $Header: /devl/xcs/repo/env/Databases/CAEInterfaces/verunilibs/data/unisims/IOBUF.v,v 1.9 2007/05/23 21:43:39 patrickp Exp $ +/////////////////////////////////////////////////////////////////////////////// +// Copyright (c) 1995/2004 Xilinx, Inc. +// All Right Reserved. +/////////////////////////////////////////////////////////////////////////////// +// ____ ____ +// / /\/ / +// /___/ \ / Vendor : Xilinx +// \ \ \/ Version : 10.1 +// \ \ Description : Xilinx Functional Simulation Library Component +// / / Bi-Directional Buffer +// /___/ /\ Filename : IOBUF.v +// \ \ / \ Timestamp : Thu Mar 25 16:42:37 PST 2004 +// \___\/\___\ +// +// Revision: +// 03/23/04 - Initial version. +// 02/22/06 - CR#226003 - Added integer, real parameter type +// 05/23/07 - Changed timescale to 1 ps / 1 ps. +// 05/23/07 - Added wire declaration for internal signals. + +`timescale 1 ps / 1 ps + + +module IOBUF (O, IO, I, T); + + parameter CAPACITANCE = "DONT_CARE"; + parameter integer DRIVE = 12; + parameter IBUF_DELAY_VALUE = "0"; + parameter IFD_DELAY_VALUE = "AUTO"; + parameter IOSTANDARD = "DEFAULT"; + parameter SLEW = "SLOW"; + + output O; + inout IO; + input I, T; + + wire ts; + + //tri0 GTS = glbl.GTS; + + or O1 (ts, GTS, T); + bufif0 T1 (IO, I, ts); + + buf B1 (O, IO); + + initial begin + + case (CAPACITANCE) + + "LOW", "NORMAL", "DONT_CARE" : ; + default : begin + $display("Attribute Syntax Error : The attribute CAPACITANCE on IOBUF instance %m is set to %s. Legal values for this attribute are DONT_CARE, LOW or NORMAL.", CAPACITANCE); + $finish; + end + + endcase + + case (IBUF_DELAY_VALUE) + + "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16" : ; + default : begin + $display("Attribute Syntax Error : The attribute IBUF_DELAY_VALUE on IOBUF instance %m is set to %s. Legal values for this attribute are 0, 1, 2, ... or 16.", IBUF_DELAY_VALUE); + $finish; + end + + endcase + + + case (IFD_DELAY_VALUE) + + "AUTO", "0", "1", "2", "3", "4", "5", "6", "7", "8" : ; + default : begin + $display("Attribute Syntax Error : The attribute IFD_DELAY_VALUE on IOBUF instance %m is set to %s. Legal values for this attribute are AUTO, 0, 1, 2, ... or 8.", IFD_DELAY_VALUE); + $finish; + end + + endcase + + end // initial begin + +endmodule + |