Individual Leds (D0 - D7); Seven-Segment Leds (U8 & U9) - Altera Nios Cyclone II Edition Reference Manual

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