Intel D845GBV Product Supplement Document for the Intel Desktop Board D845GBV - Page 22

Front Panel Connector

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Product Supplement Document for the Intel Desktop Board D845GBV 2.2.3.1 Front Panel Connector This section describes the functions of the front panel connector. Table 15 lists the signal names of the front panel connector. Table 15. Front Panel Connector Pin Signal In/Out Description Pin Hard Drive Activity LED 1 HD_PWR Out Hard disk LED pull-up 2 (330 Ω) to +5 V 3 HAD# Out Hard disk active LED 4 Reset Switch 5 Ground Ground 6 7 FP_RESET# In Reset switch 8 9 +5 V Out Power 10 Signal In/Out Description Power LED HDR_BLNK_ Out GRN Front panel green LED HDR_BLNK_ Out YEL Front panel yellow LED On/Off Switch SWITCH_ON# In Power switch Ground Ground N/C Not connected 12 Hard Drive Activity LED 34 56 Reset Switch 78 Power LED Power Switch +5 V DC 9 N/C OM14561 2.2.3.1.1 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. The LED will also show activity for devices connected to the SCSI hard drive activity LED connector. For information about The SCSI hard drive activity LED connector Refer to Section 2.2.2.3 page 19 2.2.3.1.2 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. 22

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Product Supplement Document for the Intel Desktop Board D845GBV
22
2.2.3.1
Front Panel Connector
This section describes the functions of the front panel connector.
Table 15 lists the signal names
of the front panel connector.
Table 15.
Front Panel Connector
Pin
Signal
In/Out
Description
Pin
Signal
In/Out
Description
Hard Drive Activity LED
Power LED
1
HD_PWR
Out
Hard disk LED pull-up
(330
Ω
) to +5 V
2
HDR_BLNK_
GRN
Out
Front panel green
LED
3
HAD#
Out
Hard disk active LED
4
HDR_BLNK_
YEL
Out
Front panel yellow
LED
Reset Switch
On/Off Switch
5
Ground
Ground
6
SWITCH_ON# In
Power switch
7
FP_RESET#
In
Reset switch
8
Ground
Ground
9
+5 V
Out
Power
10
N/C
Not connected
OM14561
8
6
4
2
9
7
5
3
1
Hard Drive
Activity LED
Reset
Switch
+5 V DC
N/C
Power
Switch
Power
LED
2.2.3.1.1
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.
The LED will also show activity for devices connected to the SCSI
hard drive activity LED connector.
For information about
Refer to
The SCSI hard drive activity LED connector
Section 2.2.2.3 page 19
2.2.3.1.2
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.