Forum Discussion

NuvKFC's avatar
NuvKFC
Icon for Contributor rankContributor
3 years ago
Solved

How to know which I/O standard support Schmitt trigger function?

I'm using Stratix III, IV and V devices.

Due to small glitch on PCB, I want to use the I/O with Schmitt trigger function.

But I don't which I/O support Schmitt trigger function.

Could someone please tell me how to find the related information?

Thank you very much.

Schmitt trigger:

In the follow web, Stratix series devides don't support Schmitt trigger function.

Does it right?

I/O standards Definition (intel.com)

  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    3 years ago

    Hi,


    Thank you for reaching out to Intel FPGA Community.


    As far as I concern, only Stratix 10 among other Stratix devices has the Schmitt trigger functions. You can refer here Do Altera device input buffers have built-in Schmitt triggers? which mentioned that the Altera legacy devices that offer optional Schmitt triggers on the input buffers for user I/O pins are the MAX® II and MAX V device families only.


    Regards,

    Aqid Ayman


4 Replies

  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    3 years ago

    Hi,


    Thank you for reaching out to Intel FPGA Community.


    As far as I concern, only Stratix 10 among other Stratix devices has the Schmitt trigger functions. You can refer here Do Altera device input buffers have built-in Schmitt triggers? which mentioned that the Altera legacy devices that offer optional Schmitt triggers on the input buffers for user I/O pins are the MAX® II and MAX V device families only.


    Regards,

    Aqid Ayman


    • NuvKFC's avatar
      NuvKFC
      Icon for Contributor rankContributor
      3 years ago

      Hi AqidAyman_Intel

      Thank you, AqidAyman_Intel, very much. I get it. 0.0... , Thank you very much.

  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    3 years ago

    I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get support from Intel experts. Otherwise, the community users will continue to help you on this thread.


    Thank you.


    • NuvKFC's avatar
      NuvKFC
      Icon for Contributor rankContributor
      3 years ago

      Hi AqidAyman_Intel

      OK. Thank you, AqidAyman_Intel, very much.