參數(shù)資料
型號: pentium III
廠商: Intel Corp.
英文描述: pentium III Processor for the PGA370 Socket at 500MHz to 933MHz(工作頻率500到933兆赫茲活動帶PGA370插孔奔III處理器)
中文描述: 奔騰III處理器在500MHz到933MHz的(工作頻率500到933兆赫茲活動帶PGA370插孔奔三處理器的PGA370插座)
文件頁數(shù): 12/78頁
文件大?。?/td> 610K
代理商: PENTIUM III
12
Datasheet
Pentium
III Processor for the PGA370 Socket at 500 MHz to 933 MHz
2.2
Clock Control and Low Power States
Processors allow the use of AutoHALT, Stop-Grant, Sleep, and Deep Sleep states to reduce power
consumption by stopping the clock to internal sections of the processor, depending on each
particular state. See
Figure 4
for a visual representation of the processor low power states.
Figure 2. AGTL+ Bus Topology in a Uniprocessor Configuration
Figure 3. AGTL+ Bus Topology in a Dual-Processor Configuration
Processor
Chipset
Processor
Chipset
Processor
Figure 4. Stop Clock State Machine
PCB757a
2. Auto HALT Power Down State
BCLK running.
Snoops and interrupts allowed.
HALT Instruction and
HALT Bus Cycle Generated
INIT#, BINIT#, INTR,
SMI#, RESET#
1. Normal State
Normal execution.
STPCLK#
Asserted
STPCLK#
De-asserted
3. Stop Grant State
BCLK running.
Snoops and interrupts allowed.
SLP#
Asserted
SLP#
De-asserted
5. Sleep State
BCLK running.
No snoops or interrupts allowed.
BCLK
Input
Stopped
BCLK
Input
Restarted
6. Deep Sleep State
BCLK stopped.
No snoops or interrupts allowed.
4. HALT/Grant Snoop State
BCLK running.
Service snoops to caches.
Snoop Event Occurs
Snoop Event Serviced
Snoop
Event
Occurs
Snoop
Event
Serviced
STPCLK# Asserted
STPCLK# De-asserted
and Stop-Grant State
entered from
AutoHALT
,
NMI
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