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Blues-sptn's avatar
Blues-sptn
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

How to Set the Output Delay of the Arria 10 I/O

In the Transmit path setup/hold section on page 50 of the document below,

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Arria 10 I/O can provide up to 800 ps additional delay on outputs. This delay is enabled using the output delay logic option within the assignment editor in Quartus Prime.

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It says.

However, I don't know how to set it with assignment editor.

How do I set the assignment editor?

2 Replies

  • JonWay_altera's avatar
    JonWay_altera
    Icon for Frequent Contributor rankFrequent Contributor

    Hi @Blues-sptn

    In Assignment Editor, To: <pin name>

    Assignment name: Output Delay Chain Setting or Input Delay chain setting

    Value: <how much delay you want>

    Enabled: Yes

    =====OR=====

    set_instance_assignment -name OUTPUT_DELAY_CHAIN <value> -to <pin name>

    set_instance_assignment -name INPUT_DELAY_CHAIN <value> -to <pin name>

    Example:

    set_instance_assignment -name OUTPUT_DELAY_CHAIN 4 -to pin_name1

  • Blues-sptn's avatar
    Blues-sptn
    Icon for Occasional Contributor rankOccasional Contributor

    Thank you for your reply.

    I will use it as a reference.