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INNOVUS Placement regular structures

Hello

My current project have wide area and pretty big part of it are regular structures (like registers and some comb schematic) which duplicates about 512 times.

Which of way are more relevant and convenient to implement:

1. Use hierarchical flow, so I can create this regular structure independently and just put it as macro (something similar?). But I have no experience in this way and even don't know where to dig (some links will be preferable).

2. Use Structured Data Paths (SDP) from Innovus UG. As well I have no experience and don't know pros/cons regarding to previous way.

Thanks in advance for any comments and links to materials.

Dimo M over 4 years ago

Hi,
in this situation I would recommend using the structured data path approach. The flat implementation is faster, simpler, and you do not need to create all the views for a hierarchical design.
The timing will be also more accurate, as the interconnect parasitics for these sub-blocks will all be visible for the extractor and the timing engine.
Furthermore, if you do hierarchical implementation you are losing the option for the logic to be sized independently for best power/performance/area.

There is an application note on SDPs that may help you further:

Structured Data Paths - 2nd Generation Flow - AppNote

Generate SDP Group with 2G Flow - Rapid Adoption Kit

Dimo
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