NH82801HEM S LA5R Intel, NH82801HEM S LA5R Datasheet - Page 117

• Manufacturer Part Number: NH82801HEM S LA5R
• Manufacturer: Intel

Specifications of NH82801HEM S LA5R

• Lead Free Status / RoHS Status: Compliant

Functional Description
5.2.4.4
Intel
®
ICH8 Family Datasheet
SMI/SCI Generation
Interrupts for Hot-Plug events are not supported on legacy operating systems. To
support Hot-Plug on non-PCI Express aware operating systems, Hot-Plug events can be
routed to generate SCI. To generate SCI, MPC.HPCE (D28:F0/F1/F2/F3F4/F5:Offset
D8h:bit 30) must be set. When set, enabled Hot-Plug events will cause SMSCS.HPCS
(D28:F0/F1/F2/F3F4/F5:Offset DCh:bit 30) to be set.
Additionally, BIOS workarounds for Hot-Plug can be supported by setting MPC.HPME
(D28:F0/F1/F2/F3F4/F5:Offset D8h:bit 1). When this bit is set, Hot-Plug events can
cause SMI status bits in SMSCS to be set. Supported Hot-Plug events and their
corresponding SMSCS bit are:
When any of these bits are set, SMI # will be generated. These bits are set regardless
of whether interrupts or SCI is enabled for Hot-Plug events. The SMI# may occur
concurrently with an interrupt or SCI.
• Command Completed - SCSCS.HPCCM (D28:F0/F1/F2/F3/F4/F5:Offset DCh:bit 3)
• Presence Detect Changed - SMSCS.HPPDM (D28:F0/F1/F2/F3/F4/F5:Offset DCh:bit
• Attention Button Pressed - SMSCS.HPABM (D28:F0/F1/F2/F3/F4/F5:Offset DCh:bit
• Link Active State Changed - SMSCS.HPLAS (D28:F0/F1/F2/F3/F4/F5:Offset DCh:bit
1)
2)
4)
117