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AR# 46020

MIG 7 Series v1.1-v1.4 QDRII+ - Why is the QVLD signal left unconnected?

Description

The MIG 7 Series v1.1-v1.4 QDRII+ design never uses the QVLD signal and leaves it unconnected. 

解决方案

This signal can be commented out in the UCF file to prevent any implementation errors, and can be safely removed from the design.

If the signal is not removed, the following warning occurs during BitGen:

WARNING:PhysDesignRules:367 - The signal <qdriip_qvld<0>_IBUF> is incomplete. The signal does not drive any load pins in
the design.

The QVLD signal is removed from the MIG QDRII+ design in the 14.1 software release.

AR# 46020
创建日期 01/26/2012
Last Updated 08/13/2014
状态 Active
Type 综合文章
器件
  • Kintex-7
  • Virtex-7
Tools
  • ISE Design Suite - 13.3
  • ISE Design Suite - 13.4
IP
  • MIG 7 Series