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Revision 1.1
G
Core Logic Module
(Continued)
5.2.9.3
The SC1100 supports up to three power planes. Three sig-
nals are used to control these power planes. Table 5-6
describes the signals and when each is asserted.
Power Planes Control
These signals allow control of the power of system devices
and the SC1100 itself. Table 5-7 describes the SC1100
power planes with respect to the different Sleep and Global
states.
The SC1100 power planes are controlled externally by the
three signals (i.e., the system designer should make sure
the system design is such that Table 5-7 is met) for all sup-
ported Sleep states.
V
SB
and V
BAT
are not controlled by any control signal. V
SB
exists as long as the AC power is plugged in (for desktop
systems) or the main battery is charged (for mobile sys-
tems). V
BAT
exists as long as the RTC battery is charged.
The case in which V
SB
does not exist is called Mechanical
Off (G3).
5.2.9.4
The SC1100 supports power management events that can
manage:
Power Management Events
Transition of the system from a Sleep state to a Work
state. This is done by the hardware. These events are
defined as wakeup events.
Enabled wakeup events to set the WAK_STS bit
(F1BAR1+I/O Offset 08h[15]) to 1, when transitioning
the system back to the working state.
Generation of an interrupt. This invokes the relevant
software driver. The interrupt can either be an SMI or
SCI (selected by the SCI_EN bit, F1BAR1+I/O Offset
0Ch[0]). These events are defined as interrupt events.
Table 5-8 lists the power management events that can gen-
erate an SCI or SMI.
Table 5-6. Power Planes Control Signals vs.
Sleep States
Signal
S0
SL1
SL2
SL3
SL4
and
SL5
PWRCNT1
1
1
0
0
0
PWRCNT2
1
1
1
0
0
ONCTL#
0
0
0
0
1
Table 5-7. Power Planes vs. Sleep/Global States
Sleep/
Global
State
V
CORE
, V
I/O
,
V
PLL
V
SB
, V
SBL
V
BAT
S0, SL1 and
SL2
On
On
On or Off
SL3, SL4
and SL5
Off
On
On or Off
G3
Off
Off
On
No Power
Off
Off
Off
Illegal
On
Off
On or Off
Table 5-8. Power Management Events
Event
SCI
SMI
Power Button
Yes
Yes
Power Button Override
Yes
-
Bus Master Request
Yes
-
Thermal Monitoring
Yes
Yes
USB
Yes
Yes
RTC
Yes
Yes
ACPI Timer
Yes
Yes
GPIO
Yes
Yes
IRRX1
Yes
Yes
RI2#
Yes
Yes
GPWIO
Yes
Yes
Internal SMI signal
Yes
-