Intel D845GRG Intel Desktop Boards D845RG/D845BV Product Guide English - Page 19

Hardware Management, Power Connectors, Fan Connectors, Resume on Ring, Wake from USB

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Desktop Board Features CAUTION Power supplies used with this 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 Intel desktop board may lose register settings stored in memory. For more information on standby current requirements for these desktop boards, refer to the TPS by selecting the Technical Documentation link at: http://developer.intel.com/design/motherbd/ Hardware Management • Power connectors • Fan connectors • Resume on Ring • Wake from USB • Wake from PS/2 keyboard/mouse • PME# wakeup support Power Connectors Desktop Boards D845GRG and D845GBV have two power connectors. See Figure 15 on page 66 for the location of the power connectors. Fan Connectors Desktop Boards D845GRG and D845GBV have two chassis fan connectors and one processor fan connector. See Figure 15 on page 66 for the location of the fan connectors. 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. 19

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Desktop Board Features
19
CAUTION
Power supplies used with this 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 Intel desktop board may lose register settings stored in memory.
For more information on standby current requirements for these desktop boards, refer to the TPS
by selecting the Technical Documentation link at:
Hardware Management
•
Power connectors
•
Fan connectors
•
Resume on Ring
•
Wake from USB
•
Wake from PS/2 keyboard/mouse
•
PME# wakeup support
Power Connectors
Desktop Boards D845GRG and D845GBV have two power connectors.
See Figure 15 on page 66
for the location of the power connectors.
Fan Connectors
Desktop Boards D845GRG and D845GBV have two chassis fan connectors and one processor fan
connector.
See Figure 15 on page 66 for the location of the fan connectors.
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.