参数资料
型号: AXDA1600DUT3C
厂商: ADVANCED MICRO DEVICES INC
元件分类: 微控制器/微处理器
英文描述: 1400 MHz, MICROPROCESSOR, CPGA453
封装: OPGA-453
文件页数: 21/106页
文件大小: 2275K
代理商: AXDA1600DUT3C
Chapter 4
Power Management
9
25175H—March 2003
AMD Athlon XP Processor Model 8 Data Sheet
Preliminary Information
4
Power Management
This chapter describes the power management control system
of the AMD Athlon XP processor model 8. The power
management features of the processor are compliant with the
ACPI 1.0b and ACPI 2.0 specifications.
4.1
Power Management States
The AMD Athlon XP processor model 8 supports low-power
Halt and Stop Grant states. These states are used by advanced
configuration and power interface (ACPI) enabled operating
systems for processor power management.
Figure 3 shows the power management states of the processor.
The figure includes the ACPI “Cx” naming convention for these
states.
Figure 3. AMD Athlon XP Processor Model 8 Power Management States
C1
Halt
C0
Working4
Execute HLT
SMI#, INTR, NMI, INIT#, RESET#
Inco
m
in
gProb
e
Pr
ob
e
Se
rv
ice
d
STP
CL
K#
a
ss
er
ted
STP
CLK
# as
serte
d 2
STP
CLK
# d
eass
erte
d 3
C2
Stop Grant
Cache Snoopable
Incoming Probe
Probe Serviced
Probe
State1
STP
CLK#
de
as
se
rted
(R
ea
dP
LVL
2r
egi
ster
or
thr
ottl
in
g)
S1
Stop Grant
Cache Not Snoopable
Sleep
STP
CLK
#
asse
rted
STP
CLK
#
dea
sser
ted
Note:
The AMD AthlonTM System Bus is connected during the following states:
1)
The Probe state
2)
During transitions between the Halt state and the C2 Stop Grant state
3)
During transitions between the C2 Stop Grant state and the Halt state
4)
C0 Working state
Software transitions
Hardware transitions
Legend
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