Interrupt request (irq) lines – ADLINK Express-IB User Manual
Page 38
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)