Intel D845GEBV2 Product Guide - Page 20

Resume on Ring, Wake from USB, Wake from PS/2 Keyboard/Mouse, PME# Wakeup Support, Speaker, Battery - ram

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Intel Desktop Board D845GERG2/D845GEBV2 Product Guide 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. PME# Wakeup Support When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or S5 state. Speaker A speaker is mounted on the desktop board. The speaker provides audible error code (beep code) information during the Power-On Self-Test (POST). Battery A battery on the desktop board keeps the values in CMOS RAM and the clock current when the computer is turned off. See Chapter 2 starting on page 21 for instructions on how to replace the battery. Real-Time Clock The desktop board has a time-of-day clock and 100-year calendar. A battery on the desktop board keeps the clock current when the computer is turned off. 20

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Intel Desktop Board D845GERG2/D845GEBV2 Product Guide
20
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.
PME# Wakeup Support
When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or
S5 state.
Speaker
A speaker is mounted on the desktop board.
The speaker provides audible error code (beep code)
information during the Power-On Self-Test (POST).
Battery
A battery on the desktop board keeps the values in CMOS RAM and the clock current when the
computer is turned off.
See Chapter 2 starting on page 21 for instructions on how to replace the
battery.
Real-Time Clock
The desktop board has a time-of-day clock and 100-year calendar.
A battery on the desktop board
keeps the clock current when the computer is turned off.