LEDs

In addition to the power LED, there are six LEDs, each of which is controlled by FPGA pins as shown in the table below.

The LED anodes are connected through a current limiting resistor to +3.3 V and the cathodes wired through NMOS transistors to the FPGA I/O on Bank 65. The I/O pins have external 10k pull down resistors. To turn ON an LED, the FPGA pin should be at logic ‘1’.  To turn OFF an LED, the FPGA pin should be at logic ‘0’.