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30141-23 参数 Datasheet PDF下载

30141-23图片预览
型号: 30141-23
PDF下载: 下载PDF文件 查看货源
内容描述: 的Geode ™ GXM处理器与MMX支持集成的x86解决方案 [Geode⑩ GXm Processor Integrated x86 Solution with MMX Support]
分类和应用: 微控制器和处理器外围集成电路微处理器
文件页数/大小: 244 页 / 4221 K
品牌: NSC [ National Semiconductor ]
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Power Management (Continued)  
6.5.2 Initiating Suspend with HALT  
deactivation of SUSPA# may be delayed until the end of  
an active refresh cycle.  
The CPU also enters Suspend mode as a result of execut-  
ing a HALT instruction if the SUSP_HALT bit in CCR2  
(Index C2h[3]) is set. Suspend mode is then exited upon  
recognition of an NMI, an unmasked INTR, or an SMI#.  
Normally SUSPA# is deactivated within six SYSCLKS  
from the detection of an active interrupt. However, the  
The CPU also allows PCI accesses during a HALT-initi-  
ated Suspend mode. If the CPU is in the middle of a PCI  
access when the Halt instruction is executed, the asser-  
tion of SUSPA# will be delayed until the PCI access is  
completed.  
HALT  
SYSCLK  
FRAME#  
O
I
I
X
X
C/BE[3:0]#  
AD[15:0]  
IRDY#  
X
INTR, NMI,  
SMI#  
SUSPA#  
Figure 6-2. HALT-Initiated Suspend Mode  
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176  
Revision 3.1