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Hi 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.Link Copied
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No, you need a crystal oscillator or an unbuffered CMOS inverter to build an oscillator.
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thnx man for ur fast answer ;)
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That'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?
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There have been some discussions of this on the comp.arch.fpga newsgroup. It isn't at all reliable.
Leon
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