IBASE Technology ET976, User Manual

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Appendix
ET976 Series User’s Manual
47
B. Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
Level Function
IRQ 0 System timer
IRQ 3 Communications Port (COM2)
IRQ 4 Communications Port (COM1)
IRQ 6 Communications Port (COM4)
IRQ 7 AMD GPIO Controller
IRQ 8 High precision event timer
IRQ 10 Communications Port (COM3)
IRQ 14 AMD I2C Controller
IRQ 53
High Definition Audio Controller
AMD Audio CoProcessor
IRQ 54 AMD High Definition Audio Controller
IRQ 55 AMD SFH KMDF I2C
IRQ 56 ~ IRQ 511 Microsoft ACPI-Compliant System
IRQ 4294967278 ~
4294967283
Intel(R) I210 Gigabit Network Connection
IRQ 4294967292 PCI Express Root Port
IRQ 4294967272~7 Intel(R) I211 Gigabit Network Connection
IRQ 4294967261~
4294967268
AMD USB 3.10 eXtensible Host Controller -
1.10 (Microsoft)
IRQ 4294967291,3,4 PCI Express Root Port
IRQ 4294967286 Standard SATA AHCI Controller
IRQ 4294967287,88,
IRQ 42949672890
PCI Express Downstream Switch Port
IRQ 4294967269~71 AMD Radeon(TM) Vega 8 Graphics
IRQ 4294967253~
4294967260 AMD USB 3.10 eXtensible Host Controller -
1.10 (Microsoft)
IRQ 4294967288 PCI Express Downstream Switch Port
IRQ 4294967284~
4294967285
AMD PSP 10.0 Device