On 03/20/2012 12:03 PM, Werner Almesberger wrote:
>  "the FPGA's IODELAY elements to compensate for signal propagation delay
>  discrepancies,
That's pretty cool indeed !

Actually we're not using them (they're still there in the "regular" design as a remnant of previous experiments and removed entirely in the high speed design) - it can work without. And they have a bunch of quirks too, starting with large PVT effects.

S.
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