ANXS1750FXC3M AMD (ADVANCED MICRO DEVICES), ANXS1750FXC3M Datasheet - Page 33

• Manufacturer Part Number: ANXS1750FXC3M
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ANXS1750FXC3M

• Lead Free Status / RoHS Status: Compliant

Power Management
This chapter describes the power management features of
the AMD Geode™ NX processor. The power management
features of the processor are compliant with the ACPI 1.0b
and
AMD PowerNow!™ technology.
3.1
The Geode NX processor has a variety of operating states
that support different power management goals. In addition
to the standard operating state, the processor supports
low-power Halt and Stop Grant states and the FID_Change
state. These states are used by Advanced Configuration
and Power Interface (ACPI) enabled operating systems, for
processor power management. AMD PowerNow! technol-
ogy software is used to control processor performance
AMD Geode™ NX Processors Data Book
Note:
ACPI
Power Management States
Probe
State
Halt
C1
The System Bus is connected during the following states:
1
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
2.0
SMI#, INTR, NMI, INIT#, RESET#
specifications
Figure 3-1. Processor Power Management States
Incoming Probe
Execute HLT
Probe Serviced
and
support
Cache Snoopable
Stop Grant
Working
3.0Power Management
C0
C2
states with operating systems that do not support ACPI
2.0-defined processor performance state control.
Figure 3-1 shows the power management states of the pro-
cessor. The figure includes the ACPI “Cx” naming conven-
tion for these states.
The sections that follow provide an overview of the power
management states. For more details, refer to the
AMD Athlon™ Processor System Bus Specification (publi-
cation ID 21902).
Note: In all power management states that the processor
4
is powered, the system must not stop the system
clock (SYSCLK/SYSCLK#) to the processor.
Write to FidVidCtl MSR
System Bus Connect
SIP Stream and
Hardware transitions
Software transitions
31177H
Legend
Cache Not Snoopable
FID_Change
Stop Grant
C3/S1
Sleep
3
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