NH82801HBM S LB9A Intel, NH82801HBM S LB9A Datasheet - Page 120

• Manufacturer Part Number: NH82801HBM S LB9A
• Description: CONTROLLER HUB, ICH8M, I/O, 82801HBM
• Manufacturer: Intel

Specifications of NH82801HBM S LB9A

• Power Dissipation Pd: 2.4W
• Digital Ic Case Style: BGA
• No. Of Pins: 676
• Pci Bus Type: I/O Controller Hub
• Pci Express Base Spec: PCIe 1.1
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 41.
5.3.4
5.3.4.1
5.3.4.1.1
120
LAN Mode Support
PCI Power Management
The LAN Controller supports the Advanced Configuration and Power Interface (ACPI)
specification as well as Advanced Power Management (APM). This allows the host to be
awoken (i.e. from Sx to S0) by network-related activity via an internal host wake
signal.
The LAN controller contains power management registers for PCI, and supports D0 and
D3 states. PCI transactions are only allowed in the D0 state, except for host accesses
to the LAN controller’s PCI configuration registers.
Wake-Up
The LAN Controller supports two types of wakeup mechanisms:
1) Advanced Power Management (APM) Wakeup
2) ACPI Power Management Wakeup
Both mechanisms use an internal WAKE# signal to wake the system up. This signal is
connected to the resume wake logic in the ICH8. The wake-up steps are as follows:
1) Host Wake Event occurs (note that packet is not delivered to host)
2) PME_STATUS bit is set
3) Internal WAKE# signal asserted by Host LAN function
4) System wakes from Sx state to S0 state
5) The Host LAN function is transitioned to D0
6) The Host clears the PME_STATUS bit
7) Internal WAKE# signal is deasserted by Host LAN function
Advanced Power Management Wakeup
"Advanced Power Management Wakeup", or "APM Wakeup", was previously known as
"Wake on LAN". It is a feature that has existed in the 10/100 Mbps NICs for several
generations. The basic premise is to receive a broadcast or unicast packet with an
explicit data pattern, and then to assert a signal to wake-up the system. In the earlier
generations, this was accomplished by using special signal that ran across a cable to a
defined connector on the motherboard. The NIC would assert the signal for
approximately 50ms to signal a wakeup. The LAN Controller uses (if configured to) an
in-band PM_PME message for this.
On power-up, the LAN Controller will read the APM Enable bits from the NVM PCI Init
Control Word into the APM Enable (APME) bits of the Wakeup Control Register (WUC).
These bits control enabling of APM Wakeup.
When APM Wakeup is enabled, the LAN Controller checks all incoming packets for
"Magic Packets".
Legacy 10/100
Normal 10/100/1000
Mode
Interface Active
LCI, GLCI
LCI
Intel
Connections
®
Functional Description
ICH8 Family Datasheet
82562
82566