7248 - Lattice ECP5 : What is the VSSIO used for in the pinout file of ECP5?

7248 - Lattice ECP5 : What is the VSSIO used for in the pinout file of ECP5?

Description:

The VSSIO is the system ground or the ground reference voltage pin of the I/O pins. You can connect the VSSIO to the GND pin.