Intel D865PERL Intel Desktop Board D865PERL Product Guide - Page 25
Resume on Ring, Wake from USB, Wake from PS/2 Keyboard/Mouse
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Desktop Board Features CR6J1 Figure 2. Location of Standby Power Indicator OM15473 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. Wake from PS/2 Keyboard/Mouse PS/2 keyboard/mouse activity wakes the computer from an ACPI S1 or S3 state. 25