Root Port MSI Base Register 1 (Offset 0x14C)

Root Port MSI Base Register 1 (Offset 0x14C) - 2.9 English

AXI Memory Mapped to PCI Express (PCIe) Gen2 v2.9 LogiCORE IP Product Guide (PG055)

Document ID

PG055

Release Date

2023-11-24

Version

2.9 English

The Root Port MSI Base register contains the upper 32-bits of the 64-bit MSI address (described in Table: Root Port MSI Base Register 1 ).

For EP configurations, read returns zero.

Table 2-15: Root Port MSI Base Register 1
Bits	Name	Core Access	Reset Value	Description
31:0	MSI Base	RW	0	4Kb-aligned address for MSI interrupts. In case of 32-bit MSI, it returns 0 but captures the upper 32-bits of the MSI address in case of 64-bit MSI.