There are eight LEDs on the XEM7310MT in addition to the power LED.  Each is wired directly to the FPGA as shown in the table below.

LEDFPGA PIN
D1A13
D2B13
D3A14
D4A15
D5B15
D6A16
D7B16
D8B17

The LED anodes are connected to a pull-up resistor to +3.3 V and the cathodes wired directly to the FPGA on Bank 16 with a bank I/O voltage of 1.5 V.  To turn ON an LED, the FPGA pin should be at logic ‘0’.  To turn OFF an LED, the FPGA pin should be at high impedance (‘Z’).