Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
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29.2.3. AXI Bridge FPGA Interface Clocks

The AXI interface has an asynchronous clock crossing in the FPGA-to-HPS bridge. The FPGA-to-HPS and HPS-to-FPGA interfaces are synchronized to clocks generated in the FPGA fabric. These interfaces can be asynchronous to one another.

  • f2h_axi_clock—AXI slave clock for FPGA-to-HPS bridge, generated in FPGA fabric
  • h2f_axi_clock—AXI master clock for HPS-to-FPGA bridge, generated in FPGA fabric
  • h2f_lw_axi_clock—AXI master clock for lightweight HPS-to-FPGA bridge, generated in FPGA fabric