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What oscillator frequency is most popular for FPGA designs?

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Enlightenment

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What is the most popular external oscillator frequency driving FPGA's?

For Xilinx, it seems to be 50MHz Oscillator on most boards.

What other oscillator frequencies are commonly attached to FPGA's?
 

I have seen one TS7800 board with spartan3 and 48MHz
 

it is really going to depend on the project.

We have a board with several oscillators connected to 1 FPGA, because we need about 6/7 different clock frequencies internally.
Its not a very valid question.
 

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