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Power Delivery
Main input power is applied to the Hawk through the 8-pin power connector, J1.
Power Requirements
The Hawk requires a single +8-17 VDC supply of 2 A (24 W) or better. The input DC supply
creates both the standby and payload voltages provided to the CPU module.
The exact power requirements for the Hawk depend on several factors, including CPU
configuration (the number of cores, CPU clock rate), memory configuration, peripheral
connections, and attached devices, and others. For example, driving long RS-232 lines at high
speed can increase power demand.
The VersaLogic VL-PS-ATX12-300A is a 1U size ATX power supply designed for use with the
Hawk. Use the VL-CBR-0807 adapter cable to attach the power supply to the J1 connector.
Pin
Signal
1
V12P0_IN
3
V12P0_IN
5
GND
7
V3P3_RTC
Power Delivery Considerations
Using the VersaLogic approved power supply (VL-PS-ATX12-300A) and power cable (VL-
CBR-0807) will ensure high quality power delivery to the board. Customers who design their
own power delivery methods should take into consideration the guidelines below to ensure good
power connections.
Also, the specifications for typical operating current do not include any off-board power usage
that may be fed through the Hawk power connector. Expansion boards and USB devices plugged
into the board will source additional power through the Hawk power connector.
VL-EPU-3310 Reference Manual
System Features
Table 5: J1 Main Power Connector Pinout
Description
+12 VDC power input
+12 VDC power input
Ground
+2.75V to +3.3V Battery
Figure 10. J1 Main Power Connector Pin Orientation
Pin
Signal
2
V12P0_IN
+12 VDC power input
4
GND
6
GND
8
SLP_R#
4
Description
Ground
Ground
Sleep#
18
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