B. interrupt request lines (irq) – IBASE IB897 User Manual

Page 53

Text mode
Original mode

APPENDIX

IB897 User’s 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

IRQ0

System Timer

IRQ3

Serial Port #2

IRQ4

Serial Port #1

IRQ 10

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 16

Intel(R) Management Engine
Interface

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