Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 4/01/2024
Public

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10.7. FPGA-to-HPS Address Space

A master in the FPGA using the FPGA-to-HPS (F2H) bridge has access to the entire 1 TB address range, and allows logic in the FPGA fabric to perform either non-coherent or IO coherent access to targets in the HPS, access HPS peripherals, and access on-chip RAM.
Note: The F2H interfaces in the MPFE have access to the exact same address space as the MPU, except for the GIC. Only the MPU has access to the GIC address space.
Note: By convention, access from the F2H should use AxUSER[7:0] = 0x04. This convention maintains backward compatibility with previous families with regard to dynamic transaction routing.