NH82801HBM S LB9A Intel, NH82801HBM S LB9A Datasheet - Page 201

• 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

Functional Description
5.16.4.2.4
5.16.4.3
5.16.5
5.16.6
Note:
Intel
®
ICH8 Family Datasheet
Non-AHCI Mode PME# Generation
When in non-AHCI mode (legacy mode) of operation, the SATA controller does not
generate PME#. This includes attach events (since the port must be disabled), or
interlock switch events (via the SATAGP pins).
SMI Trapping (APM)
Device 31:Function2:Offset C0h (see
on accesses to the IDE I/O spaces. These bits map to the legacy ranges
(1F0–1F7h, 3F6h, 170–177h, and 376h). If the SATA controller is in legacy mode and is
using these addresses, accesses to one of these ranges with the appropriate bit set
causes the cycle to not be forwarded to the SATA controller, and for an SMI# to be
generated. If an access to the Bus-Master IDE registers occurs while trapping is
enabled for the device being accessed, then the register is updated, an SMI# is
generated, and the device activity status bits
that a trap occurred.
SATA LED
The SATALED# output is driven whenever the BSY bit is set in any SATA port. The
SATALED# is an active-low open-collector output. When SATALED# is low, the LED
should be active. When SATALED# is high, the LED should be inactive.
AHCI Operation
The ICH8 provides hardware support for Advanced Host Controller Interface (AHCI), a
programming interface for SATA host controllers developed through a joint industry
effort. AHCI defines transactions between the SATA controller and software and enables
advanced performance and usability with SATA. Platforms supporting AHCI may take
advantage of performance features such as no master/slave designation for SATA
devices—each device is treated as a master—and hardware assisted native command
queuing. AHCI also provides usability enhancements such as Hot-Plug. AHCI requires
appropriate software support (e.g., an AHCI driver) and for some features, hardware
support in the SATA device or additional platform hardware.
The ICH8 supports all of the mandatory features of the Serial ATA Advanced Host
Controller Interface Specification, Revision 1.0 and many optional features, such as
hardware assisted native command queuing, aggressive power management, LED
indicator support, and Hot-Plug through the use of interlock switch support (additional
platform hardware and software may be required depending upon the implementation).
For reliable device removal notification while in AHCI operation without the use of
interlock switches (surprise removal), interface power management should be disabled
for the associated port. See Section 7.3.1 of the AHCI Specification for more
information.
Section 12.1.56
(Section
) contain control for generating SMI#
12.1.56) are updated indicating
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