Altera Cyclone II FPGA Starter Development Board - Manual (Page 36)

2–18 Reference Manual Altera Corporation
Cyclone II FPGA Starter Development Board October 2006
Development Board Components
connects directly to a pin on the FPGA. In the DOWN or OFF position
(closest to the edge of the board), a switch provides a LOW logic level (0
volts) to the FPGA. In the UP position a switch provides a HIGH logic
level (3.3 volts).
Figure 2–13. Toggle Switches SW0–SW9 and Red LEDs LEDR0-LEDR9
Toggle Switch Schematic
Figure 2–14 shows a schematic diagram of the toggle switches.
Figure 2–14. Toggle Switch Schematic Diagram