Altera Nios Development Board Cyclone II Edition - Manual (Page 17)

Altera Corporation Reference Manual 2–5
May 2007 Nios Development Board Cyclone II Edition
Board Components
Individual LEDs
(D0 - D7) This Nios development board provides eight individual LEDs connected
to the FPGA. Refer to
“Push-Button Switches (SW0 - SW3)” on page 2–4 .
D0 – D7 are connected to general purpose I/O pins on the FPGA as
shown in
Table 2–4 . When a pin drives logic 0, the corresponding LED
turns on.
Seven-Segment
LEDs (U8 & U9) U8 and U9 connect to the FPGA, and each segment is individually
controlled by a general-purpose I/O pin. Refer to
Figure 2–3 . When a pin
drives logic 0, the corresponding U8 and U9 LED turns on. See Table 2–5
for pin-out details.
Figure 2–3. Dual Seven-Segment Display
Table 2–4. LED Pin Table
LED FPGA Pin Board Net Name
D0 AC10 pld_led0
D1 W11 pld_led1
D2 W12 pld_led2
D3 AE8 pld_led3
D4 AF8 pld_led4
D5 AE7 pld_led5
D6 AF7 pld_led6
D7 AA11 pld_led7
U8 U9
a
b
c
d
e
f
g
dp dp
a
b
c
d
g
e
f