NH82801HEM S LB9B Intel, NH82801HEM S LB9B Datasheet - Page 70
NH82801HEM S LB9B
Manufacturer Part Number
NH82801HEM S LB9B
Description
Manufacturer
Intel
Datasheet
1.NH82801HEM_S_LB9B.pdf
(890 pages)
Specifications of NH82801HEM S LB9B
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2.10
Table 14.
70
Interrupt Interface
Interrupt Signals
PIRQ[H:E]# /
PIRQ[D:A]#
(Mobile Only)
GPIO[5:2]
SERIRQ
IDEIRQ
Name
Type
I/OD
I/OD
I/O
I
Serial Interrupt Request: This pin implements the serial interrupt
protocol.
PCI Interrupt Requests: In non-APIC mode the PIRQx# signals can
be routed to interrupts 3, 4, 5, 6, 7, 9, 10, 11, 12, 14 or 15 as
described in the Interrupt Steering section. Each PIRQx# line has a
separate Route Control register.
In APIC mode, these signals are connected to the internal I/O APIC in
the following fashion: PIRQA# is connected to IRQ16, PIRQB# to
IRQ17, PIRQC# to IRQ18, and PIRQD# to IRQ19. This frees the legacy
interrupts.
PCI Interrupt Requests: In non-APIC mode the PIRQx# signals can
be routed to interrupts 3, 4, 5, 6, 7, 9, 10, 11, 12, 14 or 15 as
described in the Interrupt Steering section. Each PIRQx# line has a
separate Route Control register.
In APIC mode, these signals are connected to the internal I/O APIC in
the following fashion: PIRQE# is connected to IRQ20, PIRQF# to
IRQ21, PIRQG# to IRQ22, and PIRQH# to IRQ23. This frees the legacy
interrupts. If not needed for interrupts, these signals can be used as
GPIO.
IDE Interrupt Request: This interrupt input is connected to the IDE
drive.
Description
Intel
®
ICH8 Family Datasheet
Signal Description
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