Unconnected Ports - 2023.2 English

Vitis High-Level Synthesis User Guide (UG1399)

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2023.2 English

Vivado HLS accepted unconnected output signals for streamed single and multidimensional arrays.

Vitis HLS allows the following types of unconnected outputs:
  • Unconnected output scalars
  • Unconnected output single and multidimensional arrays implemented as PIPOs when used inside a dataflow region
Vitis HLS does not allow:
  • Unconnected output streams
  • Unconnected output streamed single or multidimensional arrays