Digilent 6003-210-012P - Manual (Page 7)

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3. The 5 buttons are pulled to GND through a 10K resistor and pulled up to 2.5 V when pressed. When not
pressed the button is pulled up to 2.5V. A series resister (10K Ohms) bleeds off excess voltage if the
FPGA is programmed to an IO standard below 2.5V. These are marked BTN0-4.
Figure 4. Schematic for Buttons
Signal Name Pin Voltage Description
Button 0 H14 2.5V Center
Voltage must be sufficient to
cross the “on” threshold –
need to verify, as this might
be changed from “any” to >=
some voltage.
Button 1 G15 2.5V West
Button 2 G18 2.5V North
Button 3 H13 2.5V East
Button 4 G12 2.5V South
Table 3. Button FMC Connections
4. Then there are 5 LED's co-located with the buttons (BTN0-BTN4) in a Rosetta pattern. Each LED is pulled
to GND via a 300 Ohm resistor. The schematics are show in (2) Linear LEDs
Signal Name Pin Voltage Description
LED Rosetta 0 H16 any Center
Voltage must be sufficient to
cross the “on” threshold –
need to verify, as this might
be changed from “any” to >=
some voltage.