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RPDM's avatar
RPDM
Icon for Occasional Contributor rankOccasional Contributor
7 years ago
Solved

Can I use 50 Ohm calibrated bidirectional pins on an Arria 10 - seems not?

So I've replicated this on two different Arria 10 devices (10AX027 & 10AS066) and if I create a bidirectional pin I cannot get it to output something if set to a 50 Ohm calibrated output. So: set to...
  • YuanLi_S_Intel's avatar
    YuanLi_S_Intel
    7 years ago

    Hi RPDM,

    It is hardware restriction that bidirectional cannot have OCT for GPIO. However, when the I/O pin is used with external memory interface IP, bidirectional with OCT is allowed.

    Regards,

    YL

YuanLi_S_Intel's avatar
YuanLi_S_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi RPDM,

Apologize that I don’t understand the enquiry. Are you saying that the bidirectional pin in Arria 10, there is no problem in using 50 Ohm uncalibrated On-chip termination (OCT) but there is problem in using 50 Ohm calibrated OCT?

Regards,

YL