| Signal Name | I/O | Description |
|---|---|---|
| xdma0_usr_irq_req[NUM_USR_IRQ-1:0] | I | User interrupt request. Asset to generate an interrupt and maintain assertion until interrupt is serviced. |
| xdma0_usr_irq_ack[NUM_USR_IRQ-1:0] | O | User interrupt acknowledge. Indicates that the interrupt has been set on PCIe. Two acks are generated for legacy interrupt. One ack is generated for MSI/MSI-X interrupts. |
| xdma0_usr_irq_fnc[7:0] | I | Function The function of the vector to be sent. |
Note: The
xdma0_ prefix in the above
signal names will be changed to dma0_* in a future
release.NUM_USR_IRQ is selectable and it ranges from 0 to 15. Each bits in
xdma0_usr_irq_req bus corresponds to the same
bits in xdma0_usr_irq_ack. For example, xdma0_usr_irq_ack[0] represents an ack for xdma0_usr_irq_req[0].