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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 D0D1D2D3D4D5D6D7

Stratix Pin H27 H28 L23 L24 J25 J26 L20 L19

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 51 52

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Altera Nios Development Board Manual de usuario Pagina 28