82801DB Datasheet, PDF (376/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

LPC Interface Bridge Registers (D31:F0)
9.9.8
9.9.9
TCO2_CNT—TCO2 Control Register
I/O Address:
Default Value:
Lockable:
TCOBASE +0Ah
0008h
No
Attribute:
Size:
Power Well:
R/W
16 bit
Resume
Bit
Description
15:4 Reserved
GPIO11_ALERT_DISABLE — R/W. At reset (via RSMRST# asserted) this bit is set and GPIO[11]
alerts are disabled.
3 _{0 = Enable.}
1 = Disable GPIO11/SMBALERT# as an alert source for the heartbeats and the SMBus slave.
INTRD_SEL — R/W. Selects the action to take if the INTRUDER# signal goes active.
00 = No interrupt or SMI#
2:1 01 = Interrupt (as selected by TCO_INT_SEL).
10 = SMI
11 = Reserved
0 Reserved
TCO_MESSAGE1 and TCO_MESSAGE2 Registers
I/O Address:
Default Value:
Lockable:
TCOBASE +0Ch (Message 1) Attribute:
TCOBASE +0Dh (Message 2)
00h
Size:
No
Power Well:
R/W
8 bit
Resume
Bit
Description
TCO_MESSAGE[n] — R/W.The value written into this register will be sent out via the SMLINK
7:0 interface in the MESSAGE field of the Alert On LAN message. BIOS can write to this register to
indicate its boot progress which can be monitored externally.
376
Intel^® 82801DB ICH4 Datasheet