Intel D915PGN Product Guide - Page 24

Related Links, Resume on Ring, Wake from USB - memory support

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Intel Desktop Board D915PGN/D915PSY/D915PCY/D915PCM Product Guide Figure 3. Location of Standby Power Indicator OM16879 CAUTION Power supplies used with this desktop board must be able to provide enough standby current to support the standard Instantly Available (ACPI S3 sleep state) configuration. If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the desktop board may lose register settings stored in memory. Related Links For more information on standby current requirements for the desktop board, refer to the TPS by selecting the Technical Documentation link at: http://developer.intel.com/design/motherbd/ Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from either ACPI S1 or ACPI S3 state • Requires only one call to access the computer • Detects incoming call similarly for external and internal modems • Requires modem interrupt be unmasked for correct operation Wake from USB USB bus activity wakes the computer from an ACPI S1 or S3 state. NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB. 24

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Intel Desktop Board D915PGN/D915PSY/D915PCY/D915PCM Product Guide
24
OM16879
Figure 3.
Location of Standby Power Indicator
CAUTION
Power supplies used with this desktop board must be able to provide enough standby current to
support the standard Instantly Available (ACPI S3 sleep state) configuration.
If the standby
current necessary to support multiple wake events from the PCI and/or USB buses exceeds power
supply capacity, the desktop board may lose register settings stored in memory.
Related Links
For more information on standby current requirements for the desktop board, refer to the TPS by
selecting the Technical Documentation link at:
Resume on Ring
The operation of Resume on Ring can be summarized as follows:
•
Resumes operation from either ACPI S1 or ACPI S3 state
•
Requires only one call to access the computer
•
Detects incoming call similarly for external and internal modems
•
Requires modem interrupt be unmasked for correct operation
Wake from USB
USB bus activity wakes the computer from an ACPI S1 or S3 state.
NOTE
Wake from USB requires the use of a USB peripheral that supports Wake from USB.