Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 1/10/2023
Public

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9.2. Arria 10 HPS-FPGA Bridges Block Diagram and System Integration

Figure 39. HPS-FPGA Bridge ConnectivityThe following figure shows the HPS-FPGA bridges in the context of the FPGA fabric and the L3 interconnect to the HPS. Each master (M) and slave (S) interface is shown with its data width(s). The clock domain for each interconnect is shown in parentheses.

The HPS-to-FPGA and lightweight HPS-to-FPGA bridges are both mastered by the level 3 (L3) interconnect. The FPGA-to-HPS bridge masters the L3 interconnect. This arrangement allows any master implemented in the FPGA fabric to access most slaves in the HPS. For example, the FPGA-to-HPS bridge can access the accelerator coherency port (ACP) of the MPU subsystem to perform cache-coherent accesses to the SDRAM subsystem.