Lattice Semiconductor CrossLink-NX User Manual

CrossLink-NX Evaluation Board
User Guide
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FPGA-EB-02028-1.3 21
7. LEDs and Switches
This section describes the CrossLink-NX Evaluation Board LEDs and switches that can be used in demo and customer
designs.
7.1. DIP Switch
Eight CrossLink-NX pins are connected to the SW1 DIP switch to allow for manually actuated inputs to the FPGA. One
side of each switch is connected to GPIOs within the VCCIO2 bank and pulled up through 4.7 kΩ resistors. The other
side is grounded. The designated pins are connected as shown in Table .
Table 7.1. Eight-Position DIP Switch Signals
Signal Name
CrossLink-NX Ball
CrossLink-NX Bank
SWITCH0
N14
2
SWITCH1
M14
2
SWITCH2
M16
2
SWITCH3
M15
2
SWITCH4
N15
2
SWITCH5
N16
2
SWITCH6
M17
2
SWITCH7
M18
2
7.2. General Purpose Push Buttons
The CrossLink-NX Evaluation Board provides three push button switches – SW2, SW3 and SW4 for demos and user
applications. Two of the buttons control pre-defined functional pins, and the third is generic. Pressing these buttons
drives a logic level “0” to the corresponding I/O pins.
Table 7.2. Push Button Switch Signals
Signal Name
CrossLink-NX Ball
Push Button Reference
Logic Level at Button Pressed
GSRN
G19
SW4
0
PROGRAMN
E11
SW5
0
PUSHBUTTON0
G14
SW2
0
PUSHBUTTON1
G15
SW3
0
Information on PROGRAMN, refer to CrossLink-NX sysCONFIG Usage Guide (FPGA-TN-02099). SW2 is intended to be
used as a global set/reset pin when active low, but can be substituted for another function if the user desires. SW2 and
SW3 can be used as a generic input.
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Lattice Semiconductor CrossLink-NX Specifications

General

Brand	Lattice Semiconductor
Model	CrossLink-NX
Category	Motherboard
Language	English