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AMSN2800DUT4C Datasheet(PDF) 21 Page - Advanced Micro Devices

Part # AMSN2800DUT4C
Description  Processor Model 10 Multiprocessor Platforms
PDF  102 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AMSN2800DUT4C Datasheet(HTML) 21 Page - Advanced Micro Devices

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Chapter 4
Power Management
9
26426C—October 2003
AMD Athlon™ MP Processor Model 10 Data Sheet for Multiprocessor Platforms
Preliminary Information
4
Power Management
This chapter describes the power management control system
of the AMD Athlon™ MP processor model 10. 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 MP processor model 10 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 2 shows the power management states of the processor.
The figure includes the ACPI “Cx” naming convention for these
states.
Figure 2. AMD Athlon™ MP Processor Model 10 Power Management States
C1
Halt
C0
Working4
Execute HLT
SMI#, INTR, NMI, INIT#, RESET#
STP
CLK
# as
serte
d 2
STP
CLK
# d
eass
erte
d 3
C2
Stop Grant
Cache Snoopable
Incoming Probe
Probe Serviced
Probe
State1
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
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