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how to prevent inserting clkbufs along clkpath in the specified moudle??

in may case, there is a clkgen moudle. i Specify the AutoCTSRootPin at chip port, when cts tracing through the clkgen, cts can insert clkbufs in the module clkgen. Now ,i wanna prevent it. i ever try set_dont_touch clkgen/net* , unfortunately ,it doesnt work.

any way here is ?! thanks

BobD over 15 years ago

CTS should honor set_dont_touch on nets. If it doesn't, it's a bug. You can always file a service request on http://support.cadence.com or with your support AE.
Thanks,
Bob
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eminemshow over 15 years ago

Maybe it depends on what version of SoC Encounter you are using, if you are using SoC E 5.2 or before, then ckSynthesis won't respect sdc commands like set_dont_touch. But I am just wondering, why do you want to dont touch such clock gen cells?
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icmaple over 15 years ago

thanks. in version 8.1.2 there is a cmd " DontTouchNet" can be used in ctstch file.
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