Intel D865PERLX Specification page 47

1.13.2.4 Instantly Available PC Technology
CAUTION
For Instantly Available PC technology, the +5 V standby line for the power supply must be
capable of providing adequate +5 V standby current. Failure to provide adequate standby current
when implementing Instantly Available PC technology can damage the power supply.
Instantly Available PC technology enables the Desktop Boards D865PERC and D865PESO to
enter the ACPI S3 (Suspend-to-RAM) sleep-state. While in the S3 sleep-state, the computer will
appear to be off (the power supply is off, and the front panel LED is amber if dual colored, or off if
single colored.) When signaled by a wake-up device or event, the system quickly returns to its last
known wake state. Table 12 on page 44 lists the devices and events that can wake the computer
from the S3 state.
The Desktop Boards D865PERC and D865PESO support the PCI Bus Power Management
Interface Specification. For information on the version of this specification, see Section 1.5.
Add-in boards that also support this specification can participate in power management and can be
used to wake the computer.
The use of Instantly Available PC technology requires operating system support and PCI 2.2
compliant add-in cards and drivers.
1.13.2.5 Resume on Ring
The operation of Resume on Ring can be summarized as follows:
•
Resumes operation from ACPI S1 or S3 states
•
Detects incoming call similarly for external and internal modems
•
Requires modem interrupt be unmasked for correct operation
1.13.2.6 Wake from USB
USB bus activity wakes the computer from ACPI S1 or S3 states.
✏
NOTE
Wake from USB requires the use of a USB peripheral that supports Wake from USB.
1.13.2.7 Wake from PS/2 Devices
PS/2 device activity wakes the computer from an ACPI S1 or S3 state.
1.13.2.8 PME# Signal Wake-up Support
When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, S4,
or S5 state (with Wake on PME enabled in BIOS).
Product Description
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