參數(shù)資料
型號(hào)： AMD ATHLON
廠商： Advanced Micro Devices, Inc.
英文描述： 32-Bit Microprocessor with 3D Multimedia Performance and Digital Video(32位微處理器帶3D多媒體性能和數(shù)字視頻)
中文描述： 32三維多媒體性能和數(shù)字視頻比特微處理器（32位微處理器帶三維多媒體性能和數(shù)字視頻）
文件頁(yè)數(shù)： 25/106頁(yè)
文件大?。?/td> 1740K
代理商： AMD ATHLON
Chapter 4
Power Management
11
21016G/0
—
December 1999
AMD Athlon
Processor Data Sheet
Preliminary Information
4
Power Management
4.1
Power Management States
The AMD Athlon processor uses multiple advanced power
states to place the processor in reduced power modes. These
power states are used to enhance processor performance,
minimize power dissipation, and provide a balance between
performance and power (see
“
Power Dissipation
”
on page 29
for more information). In addition, these power states conform
to the industry-standard Advanced Configuration and Power
Interface (ACPI) requirements for processor power states.
(ACPI is a specification for system hardware and software to
support OS-oriented power management.) Each state has a
specific mechanism that allows the processor to enter the
respective state. Figure 3 shows the power management states
of the AMD Athlon processor. The figure includes the ACPI
power states for the processor, labeled as Cx.
Figure 3. AMD Athlon
Processor Power Management States
C1
Auto Halt
C0
Normal /
Full-On
Execute HLT and Special Cycle
SMI#, INTR, NMI, INIT#, RESET#
I
P
S
STPCLK#aseted
STPCLK#deaseted
C2
Stop Grant
Incoming Probe
Probe Serviced
Probe
State
S
R
C3
Sleep
STPCK#aseted
ReadPLV3regse
Legend:
Hardware transitions
Software transitions
Note *
Note:
The C1 to C2 transition by way of the STPCLK# assertion/deassertion is not defined for ACPI-compliant systems.
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