NH82801GHM S L8YR Intel, NH82801GHM S L8YR Datasheet - Page 430
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NH82801GHM S L8YR
Manufacturer Part Number
NH82801GHM S L8YR
Description
Manufacturer
Intel
Datasheet
1.NH82801GHM_S_L8YR.pdf
(848 pages)
Specifications of NH82801GHM S L8YR
Lead Free Status / RoHS Status
Compliant
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10.8.2
Table 10-10. APM Register Map
10.8.2.1
10.8.2.2
430
APM I/O Decode
Table 10-10
enabled in the PCI Device 31: Function 0 space (APMDEC_EN), and cannot be moved
(fixed I/O location).
APM_CNT—Advanced Power Management Control Port
Register
I/O Address:
Default Value:
Lockable:
Power Well:
APM_STS—Advanced Power Management Status Port
Register
I/O Address:
Default Value:
Lockable:
Power Well:
Address
7:0
7:0
Bit
Bit
B2h
B3h
Used to pass data between the OS and the SMI handler. Basically, this is a scratchpad
register and is not affected by any other register or function (other than a PCI reset).
Used to pass an APM command between the OS and the SMI handler. Writes to this
port not only store data in the APMC register, but also generates an SMI# when the
APMC_EN bit is set.
Mnemonic
shows the I/O registers associated with APM support. This register space is
APM_CNT
APM_STS
B2h
00h
No
Core
00h
No
Core
B3h
Advanced Power Management Control Port
Advanced Power Management Status Port
Register Name
Description
Description
Attribute:
Size:
Usage:
Attribute:
Size:
Usage:
LPC Interface Bridge Registers (D31:F0)
Intel
R/W
8-bit
Legacy Only
R/W
8-bit
Legacy Only
®
ICH7 Family Datasheet
Default
00h
00h
Type
R/W
R/W
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