Functional Description
In TCO Legacy/Compatible mode the Intel ICH10 can function directly with the
integrated Gigabit Ethernet controller or equivalent external LAN controller to report
messages to a network management console without the aid of the system processor.
This is crucial in cases where the processor is malfunctioning or cannot function due to
being in a low-power state. Table 5-41 includes a list of events that will report
messages to the network management console.
Table 5-41. Event Transitions that Cause Messages
Event
Assertion? Deassertion?
Comments
INTRUDER# pin
yes
no
Must be in “S1 or hung S0” state
Must be in “S1 or hung S0” state. Note
that the THRM# pin is isolated when
the core power is off, thus preventing
this event in S3-S5.
THRM# pin
yes
yes
Watchdog Timer
Expired
yes
yes
no (NA)
yes
“S1 or hung S0” state entered
Must be in “S1 or hung S0” state
GPIO[11]/
SMBALERT# pin
BATLOW#
yes
yes
yes
no
Must be in “S1 or hung S0” state
“S1 or hung S0” state entered
CPU_PWR_FLR
NOTE: The GPIO11/SMBALERT#/JTAGTDO pin will trigger an event message (when enabled by
the GPIO11_ALERT_DISABLE bit) regardless of whether it is configured as a GPI or not.
5.14.2.2
Advanced TCO Mode
Intel ICH10 supports two modes of Advanced TCO. Intel Manageability Engine (Intel
ME) mode and BMC mode. To enable Advance TCO mode (Intel ME or BMC mode) the
TCOMODE bit 7 in the ICHSTRP0 register in the SPI device must be 1.
170
Datasheet
INTEL [ INTEL ]
