NH82801DB S L8DE Intel, NH82801DB S L8DE Datasheet - Page 296

• Manufacturer Part Number: NH82801DB S L8DE
• Manufacturer: Intel

Specifications of NH82801DB S L8DE

• Lead Free Status / RoHS Status: Compliant

LPC Interface Bridge Registers (D31:F0)
9.1.10
9.1.11
296
PMBASE—ACPI Base Address (LPC I/F—D31:F0)
Offset Address:
Default Value:
Lockable:
Sets base address for ACPI I/O registers, GPIO registers and TCO I/O registers. Can be mapped
anywhere in the 64K I/O space on 128-byte boundaries.
ACPI_CNTL—ACPI Control (LPC I/F — D31:F0)
Offset Address:
Default Value:
Lockable:
31:16
Bit
7:5
2:0
15:7
Bit
6:1
4
3
0
Reserved
ACPI Enable (ACPI_EN) — R/W.
0 = Disable.
1 = Decode of the I/O range pointed to by the ACPI Base register is enabled, and the ACPI power
Reserved
SCI IRQ Select (SCI_IRQ_SEL) — R/W. This field specifies on which IRQ the SCI will internally
appear. If not using the APIC, the SCI must be routed to IRQ9-11, and that interrupt is not sharable
with the SERIRQ stream, but is shareable with other PCI interrupts. If using the APIC, the SCI can
also be mapped to IRQ20-23, and can be shared with other interrupts.
000 = IRQ9
001 = IRQ10
010 = IRQ11
011 = Reserved
100 = IRQ20 (Only available if APIC enabled)
101 = IRQ21 (Only available if APIC enabled)
110 = IRQ22 (Only available if APIC enabled)
111 = IRQ23 (Only available if APIC enabled)
NOTE: When the TCO interrupt is mapped to APIC interrupts 9, 10 or 11, the signal is in fact active
Reserved
Base Address — R/W. Provides 128 bytes of I/O space for ACPI, GPIO, and TCO logic. This is
placed on a 128-byte boundary.
Reserved
Resource Indicator — RO. Tied to 1 to indicate I/O space.
management function is enabled. Note that the APM power management ranges (B2/B3h) are
always enabled and are not affected by this bit.
high. When the TCO interrupt is mapped to IRQ 20, 21, 22, or 23 the signal is active low and
can be shared with PCI interrupts that may be mapped to those same signals (IRQs).
40
00000001h
No
44h
00h
No
–
43h
Description
Description
Attribute:
Size:
Usage:
Power Well:
Attribute:
Size:
Usage:
Power Well:
Intel
R/W, RO
32 bit
ACPI, Legacy
Core
R/W
8 bit
ACPI, Legacy
Core
®
82801DB ICH4 Datasheet