Interrupt Request Lines (Irq) - ROHS ITX-i9453 User Manual

Appendix

4.2 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 01 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
IRQ 03 Communications Port
IRQ 04 Communications Port
IRQ 06 Standard floppy disk controller
IRQ 08 System CMOS/real time clock
IRQ 09 Microsoft ACPI-Compliant System
IRQ 12 PS/2 Compatible Mouse
IRQ 14 Primary IDE Channel
IRQ 15 Secondary IDE Channel
IRQ 16 Intel(R) 82801G (ICH7 Family) USB Universal Host Controller
- 27CB
IRQ 16 Intel(R) 82801G (ICH7 Family) PCI Express Root Port - 27D0
IRQ 16 Mobile Intel(R) 945GM Express Chipset Family
IRQ 16 Intel(R) PRO/1000 PM Network Connection
IRQ 17 Intel(R) 82801G (ICH7 Family) PCI Express Root Port - 27D2
IRQ 17 Realtek AC'97 Audio
IRQ 17 Intel(R) PRO/1000 PM Network Connection
IRQ 18 Intel(R) 82801G (ICH7 Family) USB Universal Host Controller
- 27CA
IRQ 19 Intel(R) 82801G (ICH7 Family) USB Universal Host Controller
- 27C9
IRQ 23 Intel(R) 82801G (ICH7 Family) USB Universal Host Controller
- 27C8
IRQ 23 Intel(R) 82801G (ICH7 Family) USB2 Enhanced Host Controller
- 27CC
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