Article ID: 000082700 Content Type: Error Messages Last Reviewed: 10/12/2011

Error: Can’t route signal to atom

Environment

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

    Critical Issue

    Description

    If you apply both a FAST_INPUT_REGISTER assignment to an I/O and a D3_DELAY assignment to the associated delay chain, compilation might fail with an error similar to the following:

    Error: Can’t route signal "in~input" to atom "io_ff" Error: Can’t fit design in device

    Resolution

    Do not apply both a D3_DELAY assignment and a FAST_INPUT_REGISTER assignment. You may safely apply either assignment, but not both.

    Related Products

    This article applies to 1 products

    Stratix® V FPGAs

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