Intel D845GVFN Product Specification - Page 54

Hard Drive Activity LED Connector, 8.3.2.2, Reset Switch Connector, 8.3.2.3, Power/Sleep

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Intel Desktop Board D845GVFN Technical Product Specification 2.8.3.2.1 Hard Drive Activity LED Connector Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is being read from or written to a hard drive. For the LED to function properly, an IDE drive must be connected to the onboard IDE interface. 2.8.3.2.2 Reset Switch Connector Pins 5 and 7 can be connected to a momentary SPST type switch that is normally open. When the switch is closed, the desktop board resets and runs the POST. 2.8.3.2.3 Power/Sleep LED Connector Pins 2 and 4 can be connected to a one- or two-color LED. Table 33 shows the possible states for a one-color LED. Table 34 shows the possible states for a two-color LED. Table 33. States for a One-Color Power LED LED State Off Steady Green Description Power off/sleeping Running Table 34. States for a Two-Color Power LED LED State Off Steady Green Steady Yellow Description Power off Running Sleeping NOTE The colors listed in Table 33 and Table 34 are suggested colors only. Actual LED colors are product- or customer-specific. 2.8.3.2.4 Power Switch Connector Pins 6 and 8 can be connected to a front panel momentary-contact power switch. The switch must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off. (The time requirement is due to internal debounce circuitry on the Desktop Board D845GVFN.) At least two seconds must pass before the power supply will recognize another on/off signal. 54

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Intel Desktop Board D845GVFN Technical Product Specification
54
2.8.3.2.1
Hard Drive Activity LED Connector
Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is being read from
or written to a hard drive.
For the LED to function properly, an IDE drive must be connected to the
onboard IDE interface.
2.8.3.2.2
Reset Switch Connector
Pins 5 and 7 can be connected to a momentary SPST type switch that is normally open.
When the
switch is closed, the desktop board resets and runs the POST.
2.8.3.2.3
Power/Sleep LED Connector
Pins 2 and 4 can be connected to a one- or two-color LED.
Table 33 shows the possible states for a
one-color LED.
Table 34 shows the possible states for a two-color LED.
Table 33.
States for a One-Color Power LED
LED State
Description
Off
Power off/sleeping
Steady Green
Running
Table 34.
States for a Two-Color Power LED
LED State
Description
Off
Power off
Steady Green
Running
Steady Yellow
Sleeping
±
NOTE
The colors listed in Table 33 and Table 34 are suggested colors only.
Actual LED colors are
product- or customer-specific.
2.8.3.2.4
Power Switch Connector
Pins 6 and 8 can be connected to a front panel momentary-contact power switch.
The switch must
pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or off.
(The time requirement is due to internal debounce circuitry on the Desktop Board D845GVFN.)
At
least two seconds must pass before the power supply will recognize another on/off signal.