ddr_cntl_a.twr

arm控制FPGA的DDR测试代码

--------------------------------------------------------------------------------
Release 8.1i Trace I.24
Copyright (c) 1995-2005 Xilinx, Inc.  All rights reserved.

D:\hardware\Xilinx\bin\nt\trce.exe -ise ddr_cntl_a_withtb.ise -intstyle ise -e
3 -l 3 -s 5 -xml ddr_cntl_a ddr_cntl_a.ncd -o ddr_cntl_a.twr ddr_cntl_a.pcf


Design file:              ddr_cntl_a.ncd
Physical constraint file: ddr_cntl_a.pcf
Device,speed:             xc3s4000,-5 (PRODUCTION 1.37 2005-11-04)
Report level:             error report

Environment Variable      Effect 
--------------------      ------ 
NONE                      No environment variables were set
--------------------------------------------------------------------------------

INFO:Timing:2802 - Read 274 constraints.  If you are experiencing memory or
   runtime issues it may help to consolidate some of these constraints.  For
   more details please see solution 10784 at support.xilinx.com
INFO:Timing:2752 - To get complete path coverage, use the unconstrained paths
   option. All paths that are not constrained will be reported in the
   unconstrained paths section(s) of the report.

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<0>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.383ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<1>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.519ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<2>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.622ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<3>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.317ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<4>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.725ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<5>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.344ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<6>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.619ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<7>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.554ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<8>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.346ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<9>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.374ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<10>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.633ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<11>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.610ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<12>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.451ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<13>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.534ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<14>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.598ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<15>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.568ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<16>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.536ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<17>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.616ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<18>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.545ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<19>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.498ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<20>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.756ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<21>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.405ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<22>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.554ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<23>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.723ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<24>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.545ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<25>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.580ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<26>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.541ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<27>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.598ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<28>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.677ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<29>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.619ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<30>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.941ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "infrastructure_top0/cal_top0/tap_dly0/flop1<31>" MAXDELAY = 3 ns;

 1 item analyzed, 0 timing errors detected.
 Maximum net delay is   0.621ns.
--------------------------------------------------------------------------------

================================================================================
Timing constraint: NET "main_00/top0/dqs_int_delay_in3" MAXDELAY = 0.7 ns;

 1 item analyzed, 1 timing error detected.
 Maximum net delay is   3.521ns.
--------------------------------------------------------------------------------
Slack:    -2.821ns dqs_int_delay_in3
Error:     3.521ns delay exceeds   0.700ns timing constraint by 2.821ns
From                              To                                 Delay(ns)
W6.I                              SLICE_X1Y147.G3                       3.408
W6.I                              SLICE_X1Y146.G3                       3.408
W6.I                              SLICE_X0Y146.F3                       3.397
W6.I                              SLICE_X0Y146.G3                       3.415
W6.I                              SLICE_X0Y147.F3                       3.397
W6.I                              SLICE_X0Y147.G3                       3.415
W6.I                              SLICE_X3Y147.G2                       3.521
W6.I                              SLICE_X3Y146.G2                       3.521
W6.I                              SLICE_X2Y146.F3                       3.398
W6.I                              SLICE_X2Y146.G3                       3.416
W6.I                              SLICE_X2Y147.F3                       3.398
W6.I                              SLICE_X2Y147.G3                       3.416