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How to report latency at a sink pin in encounter

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I want to know how to report latency of a sink pin in encounter.
Suppose I have a pin "a/b/c/d/CK" .How to report the latency.

I tried the following command.
get_property [get_pins a/b/c/d/CK] arrival_rise_max..But the value it reports is quite different from the value I see at the same pin after timedesign and report_timing.Is there a more reliable command.
Most of the switches in get_property are not working like latency_max_rise etc..


Originally posted in cdnusers.org by abhiroy03
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  • Hi Mohan,

    Absolutely- the approach you describe is what I would recommend as a first course of action for its simplicity. In Sanjay's case, he was looking to have different characteristics for the clock network downstream from CLK2 than the rest of the clock network. In cases like this, it seems the bottoms-up MacroModel approach is the way to go.

    I'm interested in your comment that generating macromodels for combinational logic pins or buffers. In what way do you see a failure when trying this? In Sanjay's case, I'd guess the create_generated_clock statement is applied to a sequential element but if there's a failure occurring when macromodels are attempted to be generated for a combinational element it would be good to know about that so the software could be improved.

    Thanks,
    Bob


    Originally posted in cdnusers.org by BobD
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  • Hi Mohan,

    Absolutely- the approach you describe is what I would recommend as a first course of action for its simplicity. In Sanjay's case, he was looking to have different characteristics for the clock network downstream from CLK2 than the rest of the clock network. In cases like this, it seems the bottoms-up MacroModel approach is the way to go.

    I'm interested in your comment that generating macromodels for combinational logic pins or buffers. In what way do you see a failure when trying this? In Sanjay's case, I'd guess the create_generated_clock statement is applied to a sequential element but if there's a failure occurring when macromodels are attempted to be generated for a combinational element it would be good to know about that so the software could be improved.

    Thanks,
    Bob


    Originally posted in cdnusers.org by BobD
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