參數(shù)資料
型號： BX80532RC2400B
廠商： INTEL CORP
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 2400 MHz, MICROPROCESSOR
文件頁數(shù)： 85/99頁
文件大?。?/td> 4142K
代理商： BX80532RC2400B
86
Datasheet
Features
7.2.2
AutoHALT Powerdown State—State 2
AutoHALT is a low power state entered when the processor executes the HALT instruction. The
processor will transition to the Normal state upon the occurrence of SMI#, BINIT#, INIT#, or
LINT[1:0] (NMI, INTR). RESET# will cause the processor to immediately initialize itself.
The return from a System Management Interrupt (SMI) handler can be to either Normal Mode or
the AutoHALT Power Down state. See the Intel Architecture Software Developer's Manual,
Volume III: System Programmer's Guide for more information.
The system can generate a STPCLK# while the processor is in the AutoHALT Power Down state.
When the system deasserts the STPCLK# interrupt, the processor will return execution to the
HALT state.
While in AutoHALT Power Down state, the processor will process bus snoops and interrupts.
Figure 37. Stop Clock State Machine
2. Auto HALT Power Down State
BCLK running.
Snoops and interrupts allowed.
4. HALT/Grant Snoop State
BCLK running.
Service Snoops to caches.
Snoop
Event
Occurs
Snoop
Event
Serviced
HALT Instruction and
HALT Bus Cycle generated
INIT#, BINIT#, INTR, NMI,
SMI#, RESET#
Snoop event occurs
Snoop event serviced
1. Normal State
Normal execution.
3. Stop Grant State
BCLK running.
Snoops and interrupts allowed.
STPCLK#
Asserted
STPCLK#
Deasserted
5. Sleep State
BCLK running.
No Snoops and interrupts
allowed.
SLP#
Asserted
SLP# Deasserted
STPCLK# Asserted
STPCLK# Deasserted
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