Reply To: Free PINS on the Cyclone iv in OSSC V1.5?

NewHome Forums OSSC & OSSC Pro OSSC – DIY Support Free PINS on the Cyclone iv in OSSC V1.5? Reply To: Free PINS on the Cyclone iv in OSSC V1.5?

#19861
marqs
Participant

You should not use any pins connected to the flash chip. Unused CLK* pins (normally wired to gnd) are free but they can be only used as inputs. Note that SD card DAT1 and DAT2 pins are not used in SPI mode and are already wired to the socket, so those would be the easiest to take advantage of.