D. interrupt request lines (irq) 9, D. interrupt request lines (irq) – IBASE SI-60E User Manual
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D. 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
IRQ0
System Timer
IRQ3
Serial Port #2
IRQ4
Serial Port #1
IRQ 5
Intel(R) 8 Series/C220 Series SMBus Controller - 8C22
IRQ 13
Numeric data processor
IRQ 16
High Definition Audio Controller
IRQ 16
Intel(R) 8 Series/C220 Series USB EHCI #2 - 8C2D
IRQ 19
Intel(R) 8 Series/C220 Series SATA AHCI Controller - 8C02
IRQ 19
Intel(R) Active Management Technology - SOL (COM3)
IRQ 22
High Definition Audio Controller
IRQ 23
Intel(R) 8 Series/C220 Series USB EHCI #1 - 8C26