![background image](http://html1.mh-extra.com/html/ibase-technology/upc-6210-j19/upc-6210-j19_user-manual_3243748055.webp)
Appendix
UPC-6210 User 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
Serial Port #2 (COM2)
IRQ 4
Serial Port #1 (COM1)
IRQ 8
High precision event timer
IRQ 11
Ethernet Controller
IRQ 11
Intel(R) Pentium(R) processor N-series and J-series / Intel(R)
Celeron(R) processor N- and J-series Platform Control Unit -
SMBus Port - 0F12
IRQ 19
Intel(R) Pentium(R) processor N-series and J-series / Intel(R)
Celeron(R) processor N-series and J-series AHCI - 0F23
IRQ 19
Intel(R) Pentium(R) processor N-series and J-series / Intel(R)
Celeron(R) processor N-series and J-series PCI Express -
Root Port 4 - 0F4E
IRQ 16
Intel(R) Pentium(R) processor N-series and J-series / Intel(R)
Celeron(R) processor N- and J-series PCI Express - Root
Port 1 - 0F48
IRQ 17
Intel(R) Pentium(R) processor N-series and J-series / Intel(R)
Celeron(R) processor N- and J-series PCI Express - Root
Port 2 - 0F4A
IRQ 18
Intel(R) Pentium(R) processor N-series and J-series / Intel(R)
Celeron(R) processor N-series and J-series PCI Express -
Root Port 3 - 0F4C
IRQ 22
High Definition Audio Controller
IRQ 81 - IRQ 190
Microsoft ACPI-Compliant System
IRQ 4294967292
Intel(R) Trusted Execution Engine Interface
IRQ 4294967293
Intel(R) USB 3.0 Extensible Host Controller
IRQ 4294967294
Intel(R) Atom(TM) Processor E3800 Series/Intel(R)
Celeron(R) Processor N2920/J1900