Honored ContributorHi all,
Can I use a quartz crystal to drive the GCLK pin of FPGAs? I mean just like the microcontroller XTAL pin which needs a quartz crystal with 2 capacitors? Thanks in advance.
Honored ContributorNo, you need a crystal oscillator or an unbuffered CMOS inverter to build an oscillator.
Honored Contributorthnx man for ur fast answer ;)
Honored ContributorThat's an interesting question, though! Has anybody here ever tried to use the FPGA itself to build a crystal oscillator? It's quite easy to have a simple inverter from on pin to another. So after configuration, the FPGA should oscillate with the crystal. Any experience with that?
Honored ContributorThere have been some discussions of this on the comp.arch.fpga newsgroup. It isn't at all reliable.
Leon
