876784 Intel, 876784 Datasheet - Page 372

• Manufacturer Part Number: 876784
• Manufacturer: Intel

Specifications of 876784

• Lead Free Status / RoHS Status: Compliant

10.1.19
372
PIRQ[n]_ROUT—PIRQ[E,F,G,H] Routing Control Register
(LPC I/F—D31:F0)
Offset Address: PIRQE
Default Value:
Lockable:
6:4
3:0
Bit
7
Interrupt Routing Enable (IRQEN) — R/W.
0 = The corresponding PIRQ is routed to one of the ISA-compatible interrupts specified
1 = The PIRQ is not routed to the 8259.
NOTE: BIOS must program this bit to 0 during POST for any of the PIRQs that are
Reserved
IRQ Routing — R/W. (ISA compatible.)
Value
0000b
0001b
0010b
0011b
0100b
0101b
0110b
0111b
in bits[3:0].
being used. The value of this bit may subsequently be changed by the OS when
setting up for I/O APIC interrupt delivery mode.
PIRQG
80h
No
Reserved
Reserved
Reserved
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ
–
–
68h, PIRQF
6Ah, PIRQH
–
–
1000b
1001b
1010b
1011b
1100b
1101b
1110b
1111b
Value
69h, Attribute:
6Bh
Description
Size:
Power Well:
Reserved
IRQ9
IRQ10
IRQ11
IRQ12
Reserved
IRQ14
IRQ15
IRQ
LPC Interface Bridge Registers (D31:F0)
Intel
R/W
8 bit
Core
®
ICH7 Family Datasheet