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Anthrol_T's avatar
Anthrol_T
Icon for New Contributor rankNew Contributor
1 year ago

Cyclone V General perpurse IO can't be pull down during configuration

Hi :

We are using a cyclone V device 5CEFA7F31C6. We saw some general purpose IO pins(PIN_E30 and PIN_AJ7) can't be pulldown during configuration(ASx4 mode with a Serial flash device).We thought the setting in quartus GUI or qsf may change the behavior but the setting doesn't take effect.

We want these signals to remain low during configuration but in any setting they just stay high and go to RTL value(0) after config_done. In the attached photo. You can see the yellow one(config_done) and the green one(E30 or AJ7).

Configuration

5 Replies

  • Anthrol_T's avatar
    Anthrol_T
    Icon for New Contributor rankNew Contributor
    1 year ago

    we are using the following settings in the qsf file and applied them one at a time.

    set_instance_assignment -name RESERVE_PIN AS_OUTPUT_DRIVING_GROUND -to p6_6v_reset

    set_global_assignment -name RESERVE_ALL_UNUSED_PINS_WEAK_PULLUP "AS INPUT TRI-STATED"

    set_global_assignment -name RESERVE_ALL_UNUSED_PINS_WEAK_PULLUP "AS OUTPUT DRIVING GROUND"

    quartus version: Version 22.1std.1 Build 917 02/

    • FvM's avatar
      FvM
      Icon for Super Contributor rankSuper Contributor
      1 year ago
      Hi,
      discussed settings don't affect pin state during configuration, they are only effective in user mode. To override Hi state during configuration caused by weak pull-up connect an external pull-down resistor.
  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular 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.


  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    1 year ago

    Wish to follow up with you, do you need further support on this? Has the answer provided by the user community helped you to solve the issue?


  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    1 year ago

    I hope the previous response was sufficient to help you proceed. As we do not receive any response from you on the previous question/reply/answer that we have provided. Please login to ‘https://supporttickets.intel.com/s/?language=en_US’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.