Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/19/2024
Public

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11.2.1.1. FPGA-to-HPS Initialization and Shutdown Procedure

Bridges shutdown rely on the system manager. F2H must enter reset at the same time as the rest of HPS L3, and can exit the reset after HPS L3. FPGA-based logic is required to handle any flushing of transactions to HPS prior to reset entry. Additionally, cache coherency unit (CCU) can disable all memory map ranges to the F2H if required.