DG45FC Datasheet, PDF (49/88 Pages) Intel Corporation – Technical Product Specification

Technical Reference
2.2.2.4 Power Supply Connectors
The board has the following power supply connectors:
• Main power – a 2 x 12 connector. This connector is compatible with 2 x 10
connectors previously used on Intel Desktop boards. The board supports the use
of ATX12V power supplies with either 2 x 10 or 2 x 12 main power cables. When
using a power supply with a 2 x 10 main power cable, attach that cable on the
rightmost pins of the main power connector, leaving pins 11, 12, 23, and 24
unconnected.
• Processor core power – a 2 x 2 connector. This connector provides power
directly to the processor voltage regulator and must always be used. Failure to do
so will prevent the board from booting.
Table 20. Processor Core Power Connector
Pin Signal Name
Pin Signal Name
1
Ground
3
+12 V
2
Ground
4
+12 V
Table 21. Main Power Connector
Pin Signal Name
1
+3.3 V
2
+3.3 V
3
Ground
4
+5 V
Pin Signal Name
13
+3.3 V
14
-12 V
15
Ground
16
PS-ON# (power supply remote on/off)
5
Ground
6
+5 V
7
Ground
8
PWRGD (Power Good)
17
Ground
18
Ground
19
Ground
20
No connect
9
+5 V (Standby)
10
+12 V
11
+12 V ^(Note)
12
2 x 12 connector detect ^(Note)
21
+5 V
22
+5 V
23
+5 V ^(Note)
24
Ground ^(Note)
Note: When using a 2 x 10 power supply cable, this pin will be unconnected.
For information about
Power supply considerations
Refer to
Section 2.5.1, page 56
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