NH82801FBM S L89K Intel, NH82801FBM S L89K Datasheet - Page 421
NH82801FBM S L89K
Manufacturer Part Number
NH82801FBM S L89K
Description
Manufacturer
Intel
Datasheet
1.NH82801FBM_S_L89K.pdf
(786 pages)
Specifications of NH82801FBM S L89K
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10.8.3.16
Intel
®
I/O Controller Hub 6 (ICH6) Family Datasheet
Note: Software clears bits that are set in this register by writing a 1 to the bit position.
DEVACT_STS — Device Activity Status Register
I/O Address:
Default Value:
Lockable:
Power Well:
Each bit indicates if an access has occurred to the corresponding device’s trap range, or for bits 6:9
if the corresponding PCI interrupt is active. This register is used in conjunction with the Periodic
SMI# timer to detect any system activity for legacy power management. The periodic SMI# timer
indicates if it is the right time to read the DEVACT_STS register (PMBASE + 44h).
15:13
11:10
Bit
5:1
12
9
8
7
6
0
Reserved
KBC_ACT_STS — R/WC. KBC (60/64h).
0 = Indicates that there has been no access to this device’s I/O range.
1 = This device’s I/O range has been accessed. Clear this bit by writing a 1 to the bit location.
Reserved
PIRQDH_ACT_STS — R/WC. PIRQ[D or H].
0 = The corresponding PCI interrupts have not been active.
1 = At least one of the corresponding PCI interrupts has been active. Clear this bit by writing a 1 to
PIRQCG_ACT_STS — R/WC. PIRQ[C or G].
0 = The corresponding PCI interrupts have not been active.
1 = At least one of the corresponding PCI interrupts has been active. Clear this bit by writing a 1 to
PIRQBF_ACT_STS — R/WC. PIRQ[B or F].
0 = The corresponding PCI interrupts have not been active.
1 = At least one of the corresponding PCI interrupts has been active. Clear this bit by writing a 1 to
PIRQAE_ACT_STS — R/WC. PIRQ[A or E].
0 = The corresponding PCI interrupts have not been active.
1 = At least one of the corresponding PCI interrupts has been active. Clear this bit by writing a 1 to
Reserved
IDE_ACT_STS — R/WC. IDE Primary Drive 0 and Drive 1.
0 = Indicates that there has been no access to this device’s I/O range.
1 = This device’s I/O range has been accessed. The enable bit is in the ATC register
the bit location.
the bit location.
the bit location.
the bit location.
(D31:F1:Offset C0h). Clear this bit by writing a 1 to the bit location.
PMBASE +44h
0000h
No
Core
Description
LPC Interface Bridge Registers (D31:F0)
Attribute:
Size:
Usage:
R/WC
16-bit
Legacy Only
421
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