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AR# 44811

MIG 3.61 Spartan-3E DDR - Example/user design warnings when verifying UCF

描述

The following warnings can occur in the MIG GUI when verifying a UCF file previously generated by MIG, but that has not been changed:

WARNING:LUT delay location constraint "top_00/data_path0/data_read_controller0/gen_delay[0].dqs_delay_col0/five-slice_x1y59" for dqs_delayed column of dqs[0] is invalid or missing.
WARNING:LUT delay location constraint "top_00/data_path0/data_read_controller0/gen_delay[0].dqs_delay_col0/four-slice_x0y58" for dqs_delayed column of dqs[0] is invalid or missing.
WARNING:LUT delay location constraint "top_00/data_path0/data_read_controller0/gen_delay[0].dqs_delay_col0/one-slice_x0y59" for dqs_delayed column of dqs[0] is invalid or missing.
WARNING:LUT delay location constraint "top_00/data_path0/data_read_controller0/gen_delay[0].dqs_delay_col0/six-slice_x1y58" for dqs_delayed column of dqs[0] is invalid or missing.
WARNING:LUT delay location constraint "top_00/data_path0/data_read_controller0/gen_delay[0].dqs_delay_col0/three-slice_x0y58" for dqs_delayed column of dqs[0] is invalid or missing.
WARNING:LUT delay location constraint "top_00/data_path0/data_read_controller0/gen_delay[0].dqs_delay_col0/two-slice_x0y59" for dqs_delayed column of dqs[0] is invalid or missing.
...

Are these warnings safe to ignore?

解决方案

In some cases these are false warnings and can be safely ignored. Verify that the placing and routing of the example design generated by MIG is performed successfully and correctly before confirming these can be ignored.

There are no plans to fix this in a future version of MIG.

链接问答记录

相关答复记录

Answer Number 问答标题 问题版本 已解决问题的版本
38951 MIG v3.61 - Release Notes and Known Issues for ISE Design Suite 12.4-14.2 N/A N/A
AR# 44811
日期 05/19/2012
状态 Active
Type 已知问题
器件
  • Spartan-3E
Tools
  • ISE Design Suite - 13.2
IP
  • MIG
的页面