參數(shù)資料
型號(hào)： RG82845MP
英文描述： Controller Miscellaneous - Datasheet Reference
中文描述： 控制器雜項(xiàng)-數(shù)據(jù)表參考
文件頁數(shù)： 29/157頁
文件大?。?/td> 1407K
代理商： RG82845MP
Intel
82845MP/82845MZ Chipset-Mobile (MCH-M)
124
Datasheet
250687-002
R
5.4.3.
General Description of ACPI System States
S0 (Awake): In this state all power planes are active.
S1-M (Powered on Suspend for Mobile Systems): Power is maintained to the CPU and all system
components, but most clocks are stopped by the clock synthesizer.
S2: ACPI S2 state is not supported in the Intel 845MP/845MZ Chipset platform.
S3 (Suspend To RAM): The next level of power reduction occurs when the clock synthesizer and
core well power planes for the processor and chipset are shut down, but the main memory power
plane and the ICH3-M resume well remain active. This is the Suspend To RAM (STR) state. All
clocks from synthesizers are shut down during the S3 state.
S4 (Suspend to Disk) and S5 (Soft Off): In these states the main memory power plane is shut
down in addition to the clock synthesizer and core well power planes for the processor and chipset.
The ICH3-M resume well is still powered.
G3 (Mechanical Off): In this state only the RTC (Real Time Clock) well is powered. The system
can only be reactivated via the power switch.
5.4.4.
Power Transitions
Table 33. Intel 845MP/845MZ Power Transitions
ACPI
State/Feature
CO
C1
C2/S1D
C3/C4
S1M
DDR
Active/Standby
& Nap
Active/Standby
& Nap
Nap, Active, &
Standby
Power-down
RAC
Active
Power-down
DRCG
Running
Clock Stop
Mode
Power-down
Clock Gating
Yes (during
writes)
Yes (during
writes)
Yes (enabled
during snoops)
Yes
GTL Control
Buffer Sense
Amp Disable
No
Yes
Hublink Interface
Active
Power-down
REQ1
CPU PLL
Running
AGP/Hublink
PLL
Running
Intel SpeedStep
Technology
Transition
No
Dynamic RAC
Power
Reduction
Enabled
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