参数资料
型号: YF80532KC0412M
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 2000 MHz, MICROPROCESSOR, CPGA603
封装: MICRO, PGA-603
文件页数: 104/129页
文件大小: 1528K
代理商: YF80532KC0412M
76
Datasheet
Features
6.2.2
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 system 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
STPC
LK#
Asse
rted
ST
PCL
K#
De-a
sser
ted
SLP#
Asserted
SLP#
De-asserted
Snoop Event Occurs
Snoop Event Serviced
.
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