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James_Sun's avatar
James_Sun
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2 years ago

Quatus Prime Lite Setting up Operating Condition for FPGA Cyclone V

Use Quatus Prime Lite 18.1.0 Timing Analyzer to evaluate the timing behavior of Cyclone V 5CEFA7U19A7N. To set up the operating conditions, from menu, Netlist->Set Operating Conditions.

There are a few choices.

My questions are

1. What does "7" in "7_slow_1100mv_125c" mean? Grade 7 device? "slow" already means that it is Grade is 8.

2. What does "MIN" in MIN_fast_1100mv_125c mean? Does "fast" mean "Grade 6" device?

Thanks.

3 Replies

  • 1. The number refer to the FPGA Fabric Speed Grade of the device selected.

    2. No idea what does MIN stands for. Most likely minimum and it is not important to know.

    Generally speaking, the slow timing model (what’s the slowest my design will run on the slowest device that met the speed grade, at the lowest voltage in spec and the highest temperature in spec) and the fast timing model(what’s the fastest my design will run on the fastest device, highest voltage and lowest temperature).

    Ultimately, to ensure the reliability of your design, it is necessary to meet timing for all four timing corners.

    The topic of timing models is quite complex, and I believe the best explanation can be found in the following document:

    https://www.intel.com/content/dam/altera-www/global/en_US/pdfs/literature/wp/wp-01139-timing-model.pdf

    Regards,

    Richard Tan

  • RichardT_altera's avatar
    RichardT_altera
    Icon for Super Contributor rankSuper Contributor

    Dropping a note to ask if my last reply was helpful to you?

    Do you need any further assistance from my side?


    Best Regards,

    Richard Tan


  • RichardT_altera's avatar
    RichardT_altera
    Icon for Super Contributor rankSuper Contributor

    I believe your inquiry has been answered.


    Now, I will transition this thread to community support. If you have any further questions or concerns, please don't hesitate to reach out.

    Thank you and have a great day!


    Best Regards,

    Richard Tan