Article ID: 000079851 Content Type: Troubleshooting Last Reviewed: 10/12/2011

Qsys: During system generation, disconnected interfaces cause warnings even if the interfaces are optional

Environment

  • Quartus® II Subscription Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT

    Critical Issue

    Description

    If a Qsys system that contains IP cores such as ALTPLL or a UniPHY component has any disconnected interfaces at generation time, Qsys issues errors similar to the following, even if the interfaces are optional:

    Warning: top_system.sdram: sdram.status must be exported, or connected to a matching conduit. Warning: top_system.sdram: sdram.local_powerdown must be exported, or connected to a matching conduit.

    Resolution

    Check with the component or IP author to verify whether the interfaces listed in the errors are not required. You can safely ignore these warnings if the interfaces are optional. If they are not optional, connect the interfaces.

    Related Products

    This article applies to 1 products

    Intel® Programmable Devices