參數(shù)資料
型號: BX80532KC2800D
廠商: INTEL CORP
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 2800 MHz, MICROPROCESSOR
文件頁數(shù): 3/129頁
文件大?。?/td> 1640K
代理商: BX80532KC2800D
Intel Xeon Processor with 512 KB L2 Cache
100
Datasheet
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#,
LINT[1:0] (NMI, INTR), or an interrupt delivered over the front side bus. 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.
Figure 41. Stop Clock State Machine
2. Auto HALT Power Down State
BCLK running
Snoops and interrupts allowed
1. Normal State
Normal execution
4. HALT/Grant Snoop State
BCLK running
Service snoops to caches
3. Stop Grant State
BCLK running
Snoops and interrupts allowed
5. Sleep State
BCLK running
No snoops or interrupts
allowed
HALT Instruction and
HALT Bus Cycle Generated
Snoop
Event
Occurs
Snoop
Event
Serviced
INIT#, BINIT#, INTR, NMI,
SMI#, RESET#
STPCLK#
Asserted
STPCLK#
De-asserted
ST
PC
LK#
Ass
erte
d
ST
PC
LK
# D
e-a
sse
rted
SLP#
Asserted
SLP#
De-asserted
Snoop Event Occurs
Snoop Event Serviced
.
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