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SI-614 / SI-614-M User Manual
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 3
Intel(R) Atom(TM)/Celeron(R)/Pentium(R) Processor
Platform Control Unit - SMBus Port - 0F12
IRQ 4294967291
Intel(R) Trusted Execution Engine Interface
IRQ 8
High precision event timer
IRQ 4294967294
Standard SATA AHCI Controller
IRQ 4
Communications Port (COM1)
IRQ 5
Communications Port (COM2)
IRQ 4294967293
Realtek PCIe GBE Family Controller
IRQ 0
System timer
IRQ 23
Intel(R) Atom(TM)/Celeron(R)/Pentium(R) Processor
EHCI USB - 0F34
IRQ 22
High Definition Audio Controller
IRQ 54 ~ IRQ 204
Microsoft ACPI-Compliant System
IRQ 256 ~ IRQ 511
Microsoft ACPI-Compliant System
IRQ 4294967292
Intel(R) HD Graphics
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