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GXM датащи(PDF) 177 Page - National Semiconductor (TI) |
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GXM датащи(HTML) 177 Page - National Semiconductor (TI) |
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177 / 244 page ![]() Revision 3.1 177 www.national.com Power Management (Continued) 6.5.3 Responding to a PCI Access During Suspend Mode The GXm processor can temporarily exit Suspend mode to handle PCI accesses. If an unmasked REQx# is asserted, the GXm processor will deassert SUSPA# and exit the Suspend mode to respond to the PCI access. A PCI access is completed when FRAME# is inactive and TRDY# or STOP# are active. If SUSP# is asserted when the PCI access is completed, the GXm processor will assert SUSPA# and return to a SUSP#-initiated Suspend mode. If it was a HALT-initiated Suspend mode and no active interrupts have been recognized, the CPU will assert SUSPA# andreturntoaHALT-initiatedSuspend mode. Figure 6-3. PCI Access During Suspend Mode SYSCLK REQx# TRDY# SUSP# SUSPA# FRAME# |
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