Actel ProASIC3/E, User Manual, Page: 12 / 106

Hardware Components
12 ProASIC3/E Starter Kit User’s Guide and Tutorial
technology. These voltage banks are not all required for general use of ProASIC3 silicon. They are provided purely for
illustrative purposes.
Figure 2-2. Power Supply Block Diagram
To use the ProASIC3/E Evaluation board with a wall mount power supply, use the switching brick power supply that is
provided with the kit.
The ex9 V positive center power supply provided to the board via connector J16 goes to a voltage regulator chip
U11 on the evaluation board. As soon as the external voltage is connected to the board, the red power applied LED (the
only red LED on the board) D19 illuminates to indicate that an external supply has been connected to the board. As
soon as switch SW11 is moved to the ON position (to the right, as labeled on the board “OFF/ON”), the disabling
ground signal is removed from pin 7 of U11 and the regulator begins to provide power at its output.
The U11 switching voltage regulator provides a dedicated 3.3 V supply at its output. The board’s 3.3 V supply is used for
feeding separate regulators that deliver 1.5 V (via U15), 1.8 V (via U12) and 2.5 V (via U15). The 1.5 V is required for
the core voltage of the ProASIC3 family, and the 2.5 V is required for demonstrating LVDS extended I/O bank
capability.
The presence of these voltages is indicated by four green LEDs (D13, D9, D10, and D11 respectively) illuminating at
the top right of the board. Each LED is labeled with the voltage it represents and its component identifier. All four
voltages are selectable on the I/O banks 4 and 5 (the two southernmost banks on a ProASIC3E device).
Note: Only ProASIC3E devices have 8 I/O banks. ProASIC3 devices have four I/O banks—one per side of the PQ208
package.]
The 3.3 V supply is also used for optionally providing the V
PUMP
programming voltage. This V
PUMP
voltage may be
provided to the chip during programming by applying a FlashPro3 programmer to the J1 interface and selecting V
PUMP
from the FlashPro v3.3 (or later) programming software. V
PUMP
voltage may also be provided directly to the chip from
the board.
Simply leave the JP48 jumper in place to apply the 3.3 V supply to the V
PUMP
pin (106 of the PQ208 packaged FPGA).
Note that if both FlashPro3 and the board are selected to provide V
PUMP,
then it is the connection on the board that will
override, as FlashPro3 will detect that a voltage is available, issue an information message in the programming software,
and then move the V
PUMP
output pin to a tristate value, allowing the board to provide all the power.
On
Red
Off
+9 V DC Supply
2 A Max
D19
3.3 V
Regulator
V
PUMP
5.0 V
Regulator
1.5 V
Regulator
1.8 V
Regulator
2.5 V
Regulator
Core FPGA
Voltage
LCD
Power
SW11