SLR Nomenclature - 2023.2 English

UltraFast Design Methodology Guide for FPGAs and SoCs (UG949)

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2023.2 English

Understanding SLR nomenclature for your target device is important in:

  • Pin selection
  • Floorplanning
  • Analyzing timing and other reports
  • Identifying where logic exists and where that logic is sourced or destined

You can use the Vivado Tcl command get_slrs to get specific information about SLRs for a particular device. For example, use the following commands:

  • llength [get_slrs] to obtain the number of SLRs in the device
  • get_slrs -of_objects [get_cells my_cell] to get the SLR in which my_cell is placed