NH82801DB S L8DE Intel, NH82801DB S L8DE Datasheet - Page 368

• 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)
9.8.3.14
368
DEVACT_STS — Device Activity Status Register
I/O Address:
Default Value:
Lockable:
Power Well:
This register is used in conjunction with the Periodic SMI# timer to detect any system activity for
legacy power management.
15:14
Bit
13
12
11
10
9
8
7
6
5
4
3
Reserved
ADLIB_ACT_STS — R/WC. Ad-Lib.
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.
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.
MIDI_ACT_STS — R/WC. MIDI.
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.
AUDIO_ACT_STS — R/WC. Audio (Sound Blaster “OR’d” with MSS).
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.
PIRQDH_ACT_STS
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
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
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
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
LEG_ACT_STS — R/WC. Parallel Port, Serial Port 1, Serial Port 2, Floppy Disk controller.
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
IDES1_ACT_STS — R/WC. IDE Secondary 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. Clear this bit by writing a 1 to the bit location.
the bit location.
the bit location.
the bit location.
the bit location.
PMBASE +44h
0000h
No
Core
—
—
—
—
R/WC. PIRQ[B or F].
R/WC. PIRQ[A or E].
R/WC. PIRQ[D or H].
R/WC. PIRQ[C or G].
Description
Attribute:
Size:
Usage:
Intel
R/WC
16 bit
Legacy Only
®
82801DB ICH4 Datasheet