SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The Vendor Specific Capability signal of the PCIe core, F0_VSEC_INTERRUPT_OUT, is used to generate interrupts to the EP from the RP. The F0_VSEC_INTERRUPT_OUT represents the interrupt for the EP Physical Function 0. This signal is used to generate the PCIE_DOWNSTREAM_PULSE interrupt to the local host.
The RP can write to the Vendor Specific Control registers (PCIE_CORE_PFn_I_VENDOR_SPECIFIC_CONTROL_REG) to assert this signal at the EP and this will trigger the PCIE_DOWNSTREAM_PULSE interrupt to the EP host.