Wire load Models used for Synthesis

[kumar_eee]

How do we create the wire load models? Is it provided by the fab?

 

[TonyLS]

How do we create the wire load models? Is it provided by the fab?

Usually the wireload model is provided by the vendor. Now that DC topographical has become more of a standard vendors are not providing wire load models.

 

[phoenixpavan]

Hi Kumar,

WLM are estimated RC values based on net lengths from previous experiences of project implementations.....these are provided by the fab from their past designs which have been completed.

useful??

 

[srideepa]

PnR tools such as encounter can also dump a wireload model file (Command wireload) based on routing stats. This should be iterated with Synthesis tools to get better WLMs. Anyways the first wireload model evolve from previous designs.