MachXO5-NX Development Board
Evaluation Board User Guide
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FPGA-EB-02052-1.0
9.2.
General Purpose Push Buttons
The MachXO5-NX Development Board provides four push button switches, SW2, SW3, SW4 and SW5, for demos and
user applications. Pressing these buttons drives a logic level 0 to the corresponding I/O pins.
Table 9.2. Push Button Switch Signals
Push Button Ref Name
Net Name
MachXO5-25 Ball Location
Test Points
SW2
PB1
E19
TP3
SW3
PB2
F20
TP4
SW4
PB3
B7
Pin 2 of JP4
SW5
PB4
G20
Pin 2 of JP5
SW2 and SW3 are designed for general-purpose applications. SW4 and SW5 are designed with additional jumper JP4
and JP5. SW4 can be used as ASC global reset push button when JP4 is set to connect with EXPCON_IO20, which is
connect to MANDATORY_RESET signal when mated with Lattice ASC Bridge Board. Refer to
Evaluation Board User Guide (FPGA-EB-02025)
for detailed information with ASC application. SW5 can be used as
PROGRAMN push button when JP5 is set to trigger the configuration process without power cycle. For detailed
information on PROGRAMN, refer to
MachXO5 Programming and Configuration User Guide (FPGA-TN-02271)
9.3.
General Purpose LEDs
The MachXO5-NX Development Board provides eight red LEDs that are connected to I/O within Bank 5. The LEDs are
lighted when the output is driven LOW.
lists the red LEDs and their associated pins.
Table 9.3. LED Signals
Red LEDs Ref Name
Net Name
MachXO5-25 Ball Location
D1
XLED0
R3
D2
XLED1
R2
D3
XLED2
R1
D4
XLED3
P7
D5
XLED4
H12
D6
XLED5
H11
D7
XLED6
G13
D8
XLED7
G12
9.4.
Seven-Segment Display
The MachXO5-NX Development Board features a blue Seven-segment Display of D20, as shown in
, controlled
by I/O within Bank 5. Each segment LED is lighted blue when the output is driven LOW.
lists the connections
between display LED segments and their associated driver pins.
Figure 9.3. Seven-Segment Display and its Symbol