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anonimcs's avatar
anonimcs
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2 years ago
Solved

Constraint clocks of SPI interfa

Hi all, I have a design where I generate an SPI clock and send some data over the slave. The slave is an ADC with its own setup/hold time constraints. In these constraints, the slave data input SDI ...
Timing
  • anonimcs's avatar
    anonimcs
    2 years ago

    Adding the pins of the Quad SPI IP did not work, but generating another clock like this and constraining the other QSPI ports wrt. this clock seems to work somehow

    create_generated_clock -name {qclk_vclk} -source [get_pins {corepll_inst|altpll_component|auto_generated|pll1|clk[0]}] [get_ports {QSPI_CLK}]
RichardT_altera's avatar
RichardT_altera
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2 years ago

[content removed]

  • anonimcs's avatar
    anonimcs
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    2 years ago

    Hi @RichardTanSY_Altera ,

    The design is already pipelined. But what I wanted to achieve mainly is to learn how to properly set constraints for a design like mine, not making the design more "timing-friendly". So it would be great if you can help me with that, so that I can see whether my design is good or I need adjustments on the RTL.

    • RichardT_altera's avatar
      RichardT_altera
      Icon for Super Contributor rankSuper Contributor
      2 years ago

      Hi @anonimcs

      I attempted to remove my original post content as I mistakenly posted my response in the wrong forum case. However, it seems you can still see it. Please kindly ignore my previous post.

      ​​​​​​​
      Regarding your issue, if you're okay with sharing your RTL, could you archive the .qar project (Project > Archive Project) so that I can investigate it further? The project_files.zip file doesn't seem to be compilable.

      Additionally, could you provide the block diagram of your design?

      This will help me understand the overall picture and which path you're trying to constrain.

      Regards,
      Richard Tan

      • anonimcs's avatar
        anonimcs
        Icon for Contributor rankContributor
        2 years ago
        Hi Richard,
        If you can give me your email address, I can generate and send you my .qar file.