876784 Intel, 876784 Datasheet - Page 228
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876784
Manufacturer Part Number
876784
Description
Manufacturer
Intel
Datasheet
1.876784.pdf
(848 pages)
Specifications of 876784
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Table 5-55. Command Types
228
Command
9–FFh
Type
0
1
2
3
4
5
6
7
8
Reserved
WAKE/SMI#. This command wakes the system if it is not already awake. If
system is already awake, an SMI# is generated.
NOTE: The SMB_WAK_STS bit will be set by this command, even if the system is
Unconditional Powerdown. This command sets the PWRBTNOR_STS bit, and
has the same effect as the Powerbutton Override occurring.
HARD RESET WITHOUT CYCLING: This command causes a hard reset of the
system (does not include cycling of the power supply). This is equivalent to a write
to the CF9h register with bits 2:1 set to 1, but bit 3 set to 0.
HARD RESET SYSTEM. This command causes a hard reset of the system
(including cycling of the power supply). This is equivalent to a write to the CF9h
register with bits 3:1 set to 1.
Disable the TCO Messages. This command will disable the Intel
sending Heartbeat and Event messages (as described in
command has been executed, Heartbeat and Event message reporting can only be
re-enabled by assertion and deassertion of the RSMRST# signal.
WD RELOAD: Reload watchdog timer.
Reserved
SMLINK_SLV_SMI. When ICH7 detects this command type while in the S0 state,
it sets the SMLINK_SLV_SMI_STS bit (see
only be used if the system is in an S0 state. If the message is received during S1–
S5 states, the ICH7 acknowledges it, but the SMLINK_SLV_SMI_STS bit does not
get set.
Note: It is possible that the system transitions out of the S0 state at the same time
that the SMLINK_SLV_SMI command is received. In this case, the
SMLINK_SLV_SMI_STS bit may get set but not serviced before the system goes to
sleep. Once the system returns to S0, the SMI associated with this bit would then
be generated. Software must be able to handle this scenario.
Reserved
already awake. The SMI handler should then clear this bit.
Description
Section
10.9.5). This command should
Intel
Section
®
ICH7 Family Datasheet
Functional Description
5.15.2). Once this
®
ICH7 from
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