Use of IDELAYCTRL Groups - 2022.1 English

Vivado Design Suite User Guide : Hierarchical Design (UG905)

Document ID
Release Date
2022.1 English

The use of IDELAYCTRL groups within an OOC module is supported. The OOC implementation inserts an IDELAYCTRL, and the OOC implementation results can be imported into Top. The following rules apply to the use of IDELAYCTRL groups:

  • Multiple OOC modules, each with its own IDELAYCTRL, cannot share the same clock region.
  • An OOC module with an IDELAYCTRL cannot be preserved 100%. This is a known limitation in this version of Vivado that will be addressed in a later release of the Vivado Design Suite.