BD82QM67-SLJ4M Datasheet, PDF (181/934 Pages) Intel Corporation – Intel® 6 Series Chipset and Intel® 6 Series Chipset and

Functional Description
Note:
(S1–S5), the assertion causes a wake event. Once the system has resumed to the S0
state, the 4-second timer starts.
During the time that the SLP_S4# signal is stretched for the minimum assertion width
(if enabled by D31:F0:A4h Bit 3), the Power Button is not a wake event. As a result, it
is conceivable that the user will press and continue to hold the Power Button waiting for
the system to awake. Since a 4-second press of the Power Button is already defined as
an Unconditional Power down, the power button timer will be forced to inactive while
the power-cycle timer is in progress. Once the power-cycle timer has expired, the
Power Button awakes the system. Once the minimum SLP_S4# power cycle expires,
the Power Button must be pressed for another 4 to 5 seconds to create the Override
condition to S5.
Sleep Button
The Advanced Configuration and Power Interface, Version 2.0b defines an optional
Sleep button. It differs from the power button in that it only is a request to go from S0
to S1–S4 (not S5). Also, in an S5 state, the Power Button can wake the system, but the
Sleep Button cannot.
Although the PCH does not include a specific signal designated as a Sleep Button, one
of the GPIO signals can be used to create a “Control Method” Sleep Button. See the
Advanced Configuration and Power Interface, Version 2.0b for implementation details.
5.13.8.2
RI# (Ring Indicator)
The Ring Indicator can cause a wake event (if enabled) from the S1–S5 states.
Table 5-33 shows when the wake event is generated or ignored in different states. If in
the G0/S0/Cx states, the PCH generates an interrupt based on RI# active, and the
interrupt will be set up as a Break event.
Table 5-33. Transitions Due to RI# Signal
Present State
S0
Event
RI# Active
S1–S5
RI# Active
RI_EN
X
0
1
Event
Ignored
Ignored
Wake Event
Note:
Filtering/Debounce on RI# will not be done in PCH. Can be in modem or external.
5.13.8.3
PME# (PCI Power Management Event)
The PME# signal comes from a PCI device to request that the system be restarted. The
PME# signal can generate an SMI#, SCI, or optionally a Wake event. The event occurs
when the PME# signal goes from high to low. No event is caused when it goes from low
to high.
There is also an internal PME_B0 bit. This is separate from the external PME# signal
and can cause the same effect.
Datasheet
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