5.3Interrupt Request (IRQ) Lines

Peripheral devices use interrupt request lines to notify CPU when services are required. The table below lists the interrupt request channels used by the ETX-945’s onboard devices.

IRQ Level

Function

 

 

IRQ 01

Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard

 

 

IRQ 03

Communications Port

 

 

IRQ04

Communications Port

 

 

IRQ 08

System CMOS/real time clock

 

 

IRQ 09

Microsoft ACPI-Compliant System

 

 

IRQ 10

Communications Port

 

 

IRQ 11

Communications Port

 

 

IRQ 12

PS/2 Compatible Mouse

 

 

IRQ 13

Math Coprocessor

 

 

IRQ 14

Primary IDE Channel

 

 

IRQ 15

Intel 8280 G (ICH7 Family) SMBus Controller - 27DA

 

 

IRQ 16

Intel 8280 G (ICH7 Family PCI Express Root Port - 27D0

 

 

IRQ 16

Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27CB

 

 

IRQ 16

Mobile Intel 94 GM Express Chipset Family

 

 

IRQ 17

Realtek AC’97 Audio

 

 

IRQ 18

Intel 8280 G (ICH7 Family) PCI Express Root Port - 27D4

 

 

IRQ 18

Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27CA

 

 

IRQ 19

Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C9

 

 

IRQ 19

Intel 8280 G (ICH7-M Family) Serial ATA Storage Controller - 27C4

 

 

IRQ 19

Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C9

 

 

IRQ 20

Intel PRO/ 00 VE Network Connection

 

 

IRQ 23

Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C8

 

 

IRQ 23

Intel 8280 G (ICH7 Family) USB2 Enhanced Host Controller - 27CC

 

 

ETX-945 User Manual 1.00

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Epson ETX-945 user manual Interrupt Request IRQ Lines, IRQ Level Function

ETX-945 specifications

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