Default Interfaces - 2022.2 English

Vitis High-Level Synthesis User Guide (UG1399)

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2022.2 English

Both Vivado® HLS and Vitis™ HLS allow the user to customize the interfaces to the top-level function using pragma/directions. Vitis HLS additionally supports the ability to automatically infer the right interface. The type of interfaces that Vitis HLS creates depends on:

  • The data type of the C arguments in the top-level function.
  • The target flow.
  • The default interface mode.
  • Any user-specified INTERFACE pragmas or directives.

This is fully described in the Defining Interfaces section of the user guide (UG1399) and should be reviewed before proceeding further.