NH82801HBM S LB9A Intel, NH82801HBM S LB9A Datasheet - Page 421

• 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

LPC Interface Bridge Registers (D31:F0)
9.9.7
9.9.8
Intel
®
ICH8 Family Datasheet
TCO2_CNT—TCO2 Control Register
I/O Address:
Default Value:
Lockable:
TCO_MESSAGE1 and TCO_MESSAGE2 Registers
I/O Address:
Default Value:
Lockable:
15:6
7:0
Bit
5:4
2:1
7:0
Bit
Bit
8
3
0
NMI_NOW — R/WC.
0 = Software clears this bit by writing a 1 to it. The NMI handler is expected to clear
1 = Writing a 1 to this bit causes an NMI. This allows the BIOS or SMI handler to force
Reserved
Reserved
OS_POLICY — R/W. OS-based software writes to these bits to select the policy that
the BIOS will use after the platform resets due the WDT. The following convention is
recommended for the BIOS and OS:
00 = Boot normally
01 = Shut down
10 = Don’t load OS. Hold in pre-boot state and use LAN to determine next step
11 = Reserved
NOTE: These are just scratchpad bits. They should not be reset when the TCO logic
GPIO11_ALERT_DISABLE — R/W. At reset (via RSMRST# asserted) this bit is set
and GPIO[11] alerts are disabled.
0 = Enable.
1 = Disable GPIO11/SMBALERT# as an alert source for the heartbeats and the SMBus
INTRD_SEL — R/W. This field selects the action to take if the INTRUDER# signal goes
active.
00 = No interrupt or SMI#
01 = Interrupt (as selected by TCO_INT_SEL).
10 = SMI
11 = Reserved
Reserved
TCO_MESSAGE[n] — R/W. BIOS can write into these registers to indicate its boot
progress. The external microcontroller can read these registers to monitor the boot
progress.
this bit. Another NMI will not be generated until the bit is cleared.
an entry to the NMI handler.
slave.
resets the platform due to Watchdog Timer.
TCOBASE +0Ah
0008h
No
TCOBASE +0Ch (Message 1)Attribute:
TCOBASE +0Dh (Message 2)
00h
No
Description
Description
Description
Attribute:
Size:
Power Well:
Size:
Power Well:
R/W
16-bit
Resume
R/W
8-bit
Resume
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