2. 技术支持
  3. AR# 5353: M1.5: Constraint Editor: If period constraint comes in from NGD file, not UCF file, it can't be deleted or Edited.
  4. AR# 53537: 14.x PlanAhead - (XAPP 589) "CRITICAL WARNING: [Shape Builder 18-146] Failed to build an RLOC shape for set vcxo_rloc..."

AR# 53537

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14.x PlanAhead - (XAPP 589) "CRITICAL WARNING: [Shape Builder 18-146] Failed to build an RLOC shape for set vcxo_rloc..."

描述

If I use the design provided in the application note (XAPP589) with the PlanAhead tool, the Synthesized/Implemented design returns the following warning:

CRITICAL WARNING: [Shape Builder 18-146] Failed to build an RLOC shape for set vcxo_rloc.
No placement was found that satisfies the grid spacing requirements for all instances in the set. This may be due to an invalid RLOC constraint causing incorrect column spacing. The macro reference instance is uut/Inst_picxo_top/blk000005cf.

Can this be safely ignored?

XAPP589_warning.PNG




解决方案

This warning can be safely ignored and does not occur if the design is opened in Project Navigator.

链接问答记录

主要问答记录

Answer Number 问答标题 问题版本 已解决问题的版本
56136 XAPP589 - XAPP1241 - All Digital VCXO Replacement (PICXO) - Design Assistant / Master Answer Record N/A N/A
AR# 53537
日期 02/24/2015
状态 Active
Type 已知问题
Tools
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