Group,
Can somebody check my understanding on the V2PRO30? I currently have some LVTTL single ended signals that are currently sharing a bank with some LVDS inputs. The way I understand the data sheet is that I can run my bank voltage at 3.3V as long as I don't need the on-chip terminating resistors. Is this correct? What happens if I turn on the on-chip terminating resistors with a bank voltage of 3.3V? I'm assuming that the resistance value will then be in question.
Thank you, Rob
some
LVDS
Yes.
I think the software will stop you doing this. From previous discussions with Austin, I believe this is because the termination will be out of spec. Dunno why, it seems daft to me. I would've thought that bit would be powered by Vccaux, but I guess not. Cheers, Syms.
No, it will not. You will not even get a warning message, at least not unless you turn on (even) more verbose reports.
But Jim Wu's excellent "ADEPT"-Tool (see
And yes, the termination value will be in question. Noone at Xilinx can tell you what that value might be; they haven't charcterized it, since they don't recommend using it in this way.
cu, Sean
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