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Interoperability with SiP
The Virtuoso RF Solution is a schematic driven package layout flow in Virtuoso that provides the capability to finish the package in Allegro. Therefore, interoperability with Allegro for package design should be robust to support seamless data transfer. The data models in Allegro and Virtuoso have significant differences and the gap needs to be bridged. The Allegro translators are invoked from Virtuoso and require a license for the SPB tools based on the type of the input or output database.
Due to the differences in the underlying SiP and OA databases, the object representations in SiP and OA are sometimes not entirely equivalent. Once the object has been translated from SiP to OA, it might not restore to its original SiP representation from the OA representation. Consequently, the translation of a SiP design to OA and back to SiP might be different from the original one. However, the physical layouts created from the two design representations are equivalent from the manufacturing and analysis point of view up to a certain tolerance.
The following SPB layout design tools are involved in the export and import of the layout information:
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.sipfile from Cadence SiP Layout (SiP) -
.mcmfile from Allegro Package Designer (APD) -
.brdfile from Allegro PCB Designer (Allegro)
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