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+# file: clkmgr_dcm_exdes.ucf
+# 
+# (c) Copyright 2008 - 2011 Xilinx, Inc. All rights reserved.
+# 
+# This file contains confidential and proprietary information
+# of Xilinx, Inc. and is protected under U.S. and
+# international copyright and other intellectual property
+# laws.
+# 
+# DISCLAIMER
+# This disclaimer is not a license and does not grant any
+# rights to the materials distributed herewith. Except as
+# otherwise provided in a valid license issued to you by
+# Xilinx, and to the maximum extent permitted by applicable
+# law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND
+# WITH ALL FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES
+# AND CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING
+# BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, NON-
+# INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and
+# (2) Xilinx shall not be liable (whether in contract or tort,
+# including negligence, or under any other theory of
+# liability) for any loss or damage of any kind or nature
+# related to, arising under or in connection with these
+# materials, including for any direct, or any indirect,
+# special, incidental, or consequential loss or damage
+# (including loss of data, profits, goodwill, or any type of
+# loss or damage suffered as a result of any action brought
+# by a third party) even if such damage or loss was
+# reasonably foreseeable or Xilinx had been advised of the
+# possibility of the same.
+# 
+# CRITICAL APPLICATIONS
+# Xilinx products are not designed or intended to be fail-
+# safe, or for use in any application requiring fail-safe
+# performance, such as life-support or safety devices or
+# systems, Class III medical devices, nuclear facilities,
+# applications related to the deployment of airbags, or any
+# other applications that could lead to death, personal
+# injury, or severe property or environmental damage
+# (individually and collectively, "Critical
+# Applications"). Customer assumes the sole risk and
+# liability of any use of Xilinx products in Critical
+# Applications, subject only to applicable laws and
+# regulations governing limitations on product liability.
+# 
+# THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS
+# PART OF THIS FILE AT ALL TIMES.
+# 
+
+# Input clock periods. These duplicate the values entered for the
+#  input clocks. You can use these to time your system
+#----------------------------------------------------------------
+NET "CLK_IN1" TNM_NET = "CLK_IN1";
+TIMESPEC "TS_CLK_IN1" = PERIOD "CLK_IN1" 20.0 ns HIGH 50% INPUT_JITTER 200.0ps;
+
+
+# FALSE PATH constraints 
+PIN "COUNTER_RESET" TIG;
+PIN "RESET" TIG;
+