参数资料
型号: A0800AMS3C
厂商: ADVANCED MICRO DEVICES INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 800 MHz, MICROPROCESSOR, CPGA462
封装: STAGGERED, CERAMIC, PGA-453
文件页数: 16/90页
文件大小: 1492K
代理商: A0800AMS3C
Chapter 4
Power Management
9
23792H—March 2001
AMD Athlon Processor Model 4 Data Sheet
Preliminary Information
4
Power Management
4.1
Power Management States
The AMD Athlon Processor Model 4 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 AMD Athlon Processor Model
4. The figure includes the ACPI “Cx” naming convention for
these states.
Figure 3. AMD Athlon Processor Model 4 Power Management States
C1
Halt
C0
Working
Execute HLT
SMI#, INTR, NMI, INIT#, RESET#
In
co
m
ing
Pr
ob
e
Pr
ob
e
Se
rv
ice
d
STP
C
LK
#
asser
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
ST
PC
LK
#
de
as
se
rt
ed
(R
ead
P
LVL
2
regi
st
er
or
th
ro
ttl
in
g)
C3/S1
Stop Grant
Cache Not Snoopable
Sleep
STP
CLK
#
asse
rted
STP
CLK
#
dea
sser
ted
Legend:
Hardware transitions
Software transitions
Legend:
Hardware transitions
Software transitions
The AMD System Bus is connected during the following states:
1) The Probe state
2) During transitions from Halt state to Stop Grant state
3) Stop Grant state to the Halt state
S1
4) The C0 Working State
4
2) During transitions from the Halt state to the Stop Grant state
3) During transitions from Stop Grant state to the Halt State
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