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UMall1's avatar
UMall1
Icon for Occasional Contributor rankOccasional Contributor
1 year ago

nRESET pin in Cyclone III EP3C80F484C6N

Does the nRESET Pin in the Cyclone III device have to be programmed to act as a regular IO pin or does this happen automatically. I am using active Serial programming - therefore I do not need nRESET to program the device.

I am using the pin (E4) as an input pin but I do not see the signal inside the FPGA (that is clearly present at the input pin - I can check it with a scope) when I try to read the state of the pin and light an LED.

Board Debug

3 Replies

  • NurAiman_M_Intel's avatar
    NurAiman_M_Intel
    Icon for Super Contributor rankSuper Contributor
    1 year ago

    We sincerely apologize for the inconvenience caused by the delay in addressing your Forum queries. Due to an unexpected back-end issue in our system, your Forum cases, along with others, did not get through as intended. As a result, we have a backlog of cases that we are currently working through one by one.

    Please be assured that we are doing everything we can to resolve this issue as quickly as possible. However, this process will take some time, and we kindly ask for your patience and understanding during this period. The cases will be attended by AE shortly.

    We appreciate your patience and understanding, and we are committed to providing you with the best support possible.


    Thank you for your understanding.


  • NurAiman_M_Intel's avatar
    NurAiman_M_Intel
    Icon for Super Contributor rankSuper Contributor
    1 year ago

    Hi,


    As the pin connection guidelines,


    'When not programming the device in AP Note 13 mode, nRESET is not used and is available as a user I/O pin. If the pin is not used as an I/O then it is recommended to tie this pin to VCCIO, GND or leave the pin unconnected.'


    You can just leave the pin unconnected if it is not used.


    Regards,

    Aiman


  • NurAiman_M_Intel's avatar
    NurAiman_M_Intel
    Icon for Super Contributor rankSuper Contributor
    1 year ago

    We do not receive any response from you to the previous answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you