Interrupt request (irq) lines – ADLINK Express-IB User Manual

Page 38

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Page 38

Express-IB

6.4. Interrupt Request (IRQ) Lines

PIC Mode

IRQ# Typical Intterupt Resource

Connected to Pin

Available

0 Counter

0

N/A

No

1

Keyboard controller

IRQ1 vis SEIRQ

No

2

Cascade interrupt from slave PIC N/A

No

3

Serial Port 2 (COM2) / PCI

IRQ3 via SERIRQ / PIRQ

Note (1)

4

Serial Port 1 (COM1) / PCI

IRQ4 via SERIRQ / PIRQ

Note (1)

5

Generic

IRQ5 via SERIRQ / PIRQ

Note (1)

6

Floppy Drive Controller

IRQ6 via SERIRQ / PIRQ

No

7

Generic

IRQ7 via SERIRQ / PIRQ

Note (1)

8 Real-time

clock

N/A

No

9

Generic

IRQ9 via SERIRQ / PIRQ

Note (1)

10

Generic

IRQ10 via SERIRQ / PIRQ

Note (1)

11

Generic

IRQ11 via SERIRQ / PIRQ

Note (1)

12

PS/2 Mouse

IRQ12 via SERIRQ / PIRQ

Note (1)

13 Math

Processor

N/A

No

14

Generic

IRQ14 via SERIRQ / PIRQ

Note (1)

15

Generic

IRQ15 via SERIRQ / PIRQ

Note (1)

Note (1): These IRQs can be used for PCI devices when onboard device is disabled.

APIC Mode

IRQ# Typical Intterupt Resource

Connected to Pin

Available

0 Counter

0

N/A

No

1 Keyboard

controller

N/A

No

2

Cascade interrupt from slave PIC N/A

No

3

Serial Port 2 (COM2) / PCI

IRQ3 via SERIRQ / PIRQ

Note (1)

4

Serial Port 1 (COM1) / PCI

IRQ4 via SERIRQ / PIRQ

Note (1)

5

Generic

IRQ5 via SERIRQ / PIRQ

Note (1)

6

Floppy Drive Controller

IRQ6 via SERIRQ / PIRQ

No

7

Generic

IRQ7 via SERIRQ / PIRQ

Note (1)

8 Real-time

clock

N/A

No

9

Generic

IRQ9 via SERIRQ / PIRQ

Note (1)

10

PCI

IRQ10 via SERIRQ / PIRQ

Note (1)

11 Ethernet

Controller/SMBus

Controller /ME/USB Controller

IRQ11 via SERIRQ / PIRQ

Note (1)

12

PS/2 Mouse

IRQ12 via SERIRQ / PIRQ

Note (1)

13 Math

Processor

N/A

No

14

Generic

IRQ14 via SERIRQ / PIRQ

Note (1)

15

Generic

IRQ15 via SERIRQ / PIRQ

Note (1)

16

N/A

PCIE Port 0/1/2/3/4/5/6 UHCI Controller, xHCI Controller P.E.G Root
Port, I.G.D

Note (1)

17

N/A

PCIE Port 0/1/2/3/4/5/6, P.E.G Root Port,

Note (1)

18

N/A

PCIE Port 0/1/2/3/4/5/6 UHCI Controller, P.E.G Root Port, SATA Host
controller, SMBus Controller, Thermal Controller, EHCI Controller

Note (1)

19

N/A

PCIE Port 0/1/2/3/4/5/6 UHCI Controller, P.E.G Root Port, SATA Host
controller, SATA Host controller

Note (1)

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