VSD Intern – Mixed Signal Physical Design Flow with Sky130
Learn how to implement a RTL-to-GDS flow for mixed signal SoC using OpenLANE. This course covers the steps to modify IP layouts and integrate analog and digital blocks. Gain insights from industry experts and explore the Macro based OpenLANE flow. Perfect for students and professionals in the physical design field.
What you’ll learn
- Multi-height RTL2GDS flow for Mixed Signal SoC
- Steps to convert basic analog block to hard-macro
- Steps to use hard-macro in OpenLANE RTL2GDS flow
- Labs to verify Macro based Physical Design flow
This course describes how the PNR of an analog IP, 2:1 analog multiplexer is carried out by opensource EDA tools, OpenLANE. It also discusses the steps to modify the current IP layouts in order to ensure its acceptance by the EDA tools
Mixed signal SoC is a chip which contains both analog and digital blocks. The designers are adding more analog circuitry and increasing their complexities day by day. Not only that, they also contain digital control logic. As the process nodes shrink, the demand for integration grows. A divide and conquer approach is followed, where the analog and digital structures were dealt with separately. Usually, an analog IP (Intellectual Property) is bought as black- box
To implement a RTL-to-GDS flow for mixed signal SoC, there is need to establish communication between the analog and digital blocks. For this integration to happen, hierarchical level of abstraction with either analog or digital as top level is required. In order to carry out this task, OpenROAD project can be utilized
Hope you enjoy the session. Any constructive feedback is appreciated
Future Work
To include custom LIB for macro and include timing constraints.
To perform PNR on macro of triple-height or more
Acknowledgement
Kunal Ghosh, Co-founder, VSD Corp. Pvt. Ltd
Openlane team, Efabless corporation
Tim Edwards, Senior Vice President of Analog and Design at efabless corporation
Nickson Jose, VLSI Engineer
Prithivi Raj K, National Institute of Technology Tiruchirapalli
Who this course is for:
- Students looking for a platform to enter into Physical design world
- Experts looking forward to explore Macro based OpenLANE flow
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