Altera Cyclone II, Reference Manual

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Altera Corporation Reference Manual 2–19
October 2006 Cyclone II FPGA Starter Development Board
Development Board Components
Toggle Switch Pin List
Table 2–11 lists the FPGA pins assigned to the toggle switches.
Displays
The development board provides the following displays:
■
LEDs
■
Seven-segment displays
LEDs
The development board provides 18 user-controllable LEDs, 10 red LEDs,
LEDR0–LEDR9 , above the toggle switches ( Figure 2–13 ) and 8 green
LEDs, LEDG0–LEDG7 , above the four push button switches
( Figure 2–10 ). Each LED connects directly to an FPGA general purpose
I/O pin. A HIGH logic level on a pin turns the LED on; a LOW logic level
on a pin turns the LED off.
LED Schematic
Figure 2–15 shows a schematic diagram of the LEDs.
Table 2–11. Toggle Switch FPGA Pin Connections
Switch FPGA Pin Description
SW[0] PIN_L22 Toggle Switch[0]
SW[1] PIN_L21 Toggle Switch[1]
SW[2] PIN_M22 Toggle Switch[2]
SW[3] PIN_V12 Toggle Switch[3]
SW[4] PIN_W12 Toggle Switch[4]
SW[5] PIN_U12 Toggle Switch[5]
SW[6] PIN_U11 Toggle Switch[6]
SW[7] PIN_M2 Toggle Switch[7]
SW[8] PIN_M1 Toggle Switch[8]
SW[9] PIN_L2 Toggle Switch[9]