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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
Parents

  • Bob/Mohan -

    Here is the background for my case. For noise reasons we need to slow down the transition times on our clock trees.
    BUFMAXTRAN and SINKMAXTRAN dont seem to work all that well. So our AE has gotten me some "hidden variables". These are not working all that well either. At a given time, it appears that you can either get skew, transition times or balanced clocks, but not all of them at the same time. The problem currently is how to get controllable (large 1ns or greater) rise times and have decent skew. Some amount of skew can be recovered by inserting buffers in the datapath. I have tried all kinds of experiments and I have not found an optimal solution.

    Regards,

    Sanjay


    Originally posted in cdnusers.org by ssunder@sioptical.com
Reply

  • Bob/Mohan -

    Here is the background for my case. For noise reasons we need to slow down the transition times on our clock trees.
    BUFMAXTRAN and SINKMAXTRAN dont seem to work all that well. So our AE has gotten me some "hidden variables". These are not working all that well either. At a given time, it appears that you can either get skew, transition times or balanced clocks, but not all of them at the same time. The problem currently is how to get controllable (large 1ns or greater) rise times and have decent skew. Some amount of skew can be recovered by inserting buffers in the datapath. I have tried all kinds of experiments and I have not found an optimal solution.

    Regards,

    Sanjay


    Originally posted in cdnusers.org by ssunder@sioptical.com
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