Altera Cyclone III FPGA, Справочное руководство

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2–14 Reference Manual Altera Corporation
Cyclone III FPGA Starter Board October 2007
Interfaces
Figure 2–5 shows the push buttons.
Figure 2–5. Push Buttons
System Reset Push Buttons
The system reset push button is used to force a re-configuration of the
FPGA from flash memory.
User Reset Push Buttons
The user reset push button is an input to the Cyclone III device. It is
intended to be the master reset signal for the FPGA designs loaded into
the Cyclone III device. The user reset push button is connected to the
DEV_CLRn
pin on the FPGA. The
DEV_CLRn
setting is a pin option in the
Quartus II software that you must enable to function as
DEV_CLRn
instead of a standard I/O.
User Push Buttons
The four user push buttons are intended for use in controlling FPGA
designs loaded into the Cyclone III device. There is no board-specific
function for these four push buttons.
LEDs
The board has user LEDs and board-specific LEDs. Table 2–11 lists both
user and board-specific LED pinout. A logic “0” causes the LEDs to
illuminate.
Table 2–11. Board LED Pinout (Part 1 of 2)
Signal Name FPGA Pin Name Direction Type
LED0
P13 Output 2.5 V
LED1
P12 Output 2.5 V
LED2
N12 Output 2.5 V
LED3
N9 Output 2.5 V
Power LED
N/A N/A N/A