Interrupt Interface - 1.0 English

Versal ACAP DMA and Bridge Subsystem for PCI Express Product Guide (PG344)

Document ID
Release Date
1.0 English
Table 1. Interrupt Interface
Signal Name Direction Description
usr_irq_req[NUM_USR_IRQ-1:0] I Assert to generate an interrupt. Maintain assertion until interrupt is serviced.
usr_irq_ack[NUM_USR_IRQ-1:0] O Indicates that the interrupt has been sent on PCIe. Two acks are generated for legacy interrupts. One ack is generated for MSI interrupts.

Each bits in usr_irq_reqbus corresponds to the same bits in usr_irq_ack. For example, usr_irq_ack[0] represents an ack for usr_irq_req[0].