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Altera_Forum's avatar
Altera_Forum
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11 years ago

Stratix V FPGA kit card only running at Gen3 pre-set 7

When I run compliance testing on the Stratix V FPGA card, with the LeCroy PERT and Wavemaster scope, I only get it running Gen3 at pre-set 7. Can anyone say what causes that constraint ? ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Thanks Galfonz for the reply...

My understanding is that the 11 presets are equalization settings ( at tx and rx ), that relate specifically to Gen3 speed.

I have attached the pre-sets definition ... I am no expert either and preset 7 is a "nominal" setting as I unserstand... in compliance mode or normal mode , I understand test equipment or the RC can negotiate with the EP to try another preset in order to get to a better bit error rate ( BER ). My colleague indicates Stratix V kit as an EP is stuck at preset 7 and refuses to move to another preset when requested ... I believe there is an easy answer and that person is probably on this forum.

Best Regards, Bob.