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  3. AR# 55226: LogiCORE XAUI v11.0 - Vivado - Critical Warning - No cells match DRP path for false path constraint

AR# 55226

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LogiCORE XAUI v11.0 - Vivado - Critical Warning - No cells match DRP path for false path constraint

描述

When using the XAUI v11.0 core with the following Variants:

- 10G or 20G rate for Artix-7 devices
- 10G rate for Virtex-7 devices using GTH Transceivers

Critical Warnings such as the following are seen:

[Vivado 12-180] No cells matched 'get_cells -hierarchical -filter {NAME =~ */gt_wrapper_i/gt0_core_gt_wrapper_i/gtrxreset_seq_i/DRP_OP_DONE_reg}'. ["/example_project/core_xaui_example/core
e_example.srcs/sources_1/ip/core_name/synth/core_name.xdc":17]

解决方案

To properly constraint these paths, the word "core" in the path should be replaced with the component name that the XAUI core was generated with in /sources_1/ip/core_name/synth/core_name.xdc.  

This file is read only, but can be edited outside of the Vivado GUI. 

In the following constraints "core" should be replaced with the name of the core as shown below:

set_false_path -to [get_cells -hierarchical -filter {NAME =~ */gt0_core_name_gt_wrapper_i/gtrxreset_seq_i/gtrxreset_s_reg}]
set_false_path -to [get_cells -hierarchical -filter {NAME =~ */gt_wrapper_i/gt0_core_name_gt_wrapper_i/gtrxreset_seq_i/DRP_OP_DONE_reg}]
set_false_path -to [get_cells -hierarchical -filter {NAME =~ */gt_wrapper_i/gt1_core_name_gt_wrapper_i/gtrxreset_seq_i/DRP_OP_DONE_reg}]
set_false_path -to [get_cells -hierarchical -filter {NAME =~ */gt_wrapper_i/gt2_core_name_gt_wrapper_i/gtrxreset_seq_i/DRP_OP_DONE_reg}]
set_false_path -to [get_cells -hierarchical -filter {NAME =~ */gt_wrapper_i/gt3_core_name_gt_wrapper_i/gtrxreset_seq_i/DRP_OP_DONE_reg}]



These constraints could also be added to the design top level to constrain the path, although the critical warning will still be reported if the core specific xdc is not edited.

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
54666 LogiCORE IP XAUI - Release Notes and Known Issues for Vivado 2013.1 and newer tool versions N/A N/A
AR# 55226
日期 09/22/2014
状态 Active
Type 综合文章
IP
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