Altera Nios Development Board - Manual (Page 28)

1–20 Altera Corporation
Nios Development Board Reference Manual, Stratix Edition September 2004
Push-Button Switches
Push-Button
Switches SW0 – SW3 are momentary-contact push-button switches and are used to
provide stimulus to designs in the Stratix device. See
Figure 1–17 . Each
switch is connected to a Stratix general-purpose I/O pin with a pull-up
resistor as shown in
Table 1–4 . The Stratix device pin will see a logic 0
when each switch is pressed.
Individual LEDs This Nios development board provides eight individual LEDs connected
to the Stratix device. See
Figure 1–17 . D0 – D7 are connected to general
purpose I/O pins on the Stratix device as shown in Table 1–5 . When the
Stratix pin drives logic 1, the corresponding LED turns on.
Figure 1–17. SW0 – SW3 Push Button Switches & Individual LEDs
Table 1–4. Push Button Switches Pin Out Table
Button SW0 SW1 SW2 SW3
Stratix Pin W5 W6 AB2 AB1
Table 1–5. LED Pin Out Table
LED D0 D1 D2 D3 D4 D5 D6 D7
Stratix Pin H27 H28 L23 L24 J25 J26 L20 L19