Get email delivery of the Cadence blog featured here
The next blogs in the Virtuoso Device-Level Routing blog series will enfold the story of how a trunk and a twig became a tree. This blog describes the Trunk Generation feature in detail – which is the founding piece that helps us to provide customized device-level routing solutions.
Designs are becoming more structured and row-based as we move from matured nodes to advanced nodes. Here is an example of the type of placed device-level designs that we are now seeing in advanced nodes.
The designers in Cadence’s own IP Group are already beating the drum for the new automatic Trunk Generation, Trunk-to-Trunk Mesh routing, and Tree route flow features as they have witnessed a significant reduction in overall routing time while using these features on larger types of designs. Mask layout designers can boost their productivity by learning how to automate the creation of interconnect with the use of new features like Trunk Generation.
In the Virtuoso platform, Trunk Generation offers a higher level of automation over Finish Trunk and helps you by automatically generating trunks in a customized approach. It offers incremental productivity improvement with automation over Pin-to-Trunk, while still providing all the customizable options in the Pin-to-Trunk flow.
Here is a video that illustrates how the trunks are automatically generated using the defined presets in the Pin-to-Trunk route flow. The first preset (1) sets the Trunk Generation command to create one trunk in each cell row. The second preset (2) sets the command to create two trunks over the cell row that has no connections. In addition, the video shows how trunks are generated not only per net, but also in a customized way in a specified area.
Stay tuned... the next blog in this series will describe how the new Trunk-to-Trunk Mesh routing can be customized.
To further automate your routing flow, see the below mentioned topics in the user guide, video, and the previous blog in this series.
For more information on Cadence circuit design products and services, visit www.cadence.com.
Virtuosity has been our most viewed and admired blog series for a long time that has brought to fore some lesser known, yet very useful software and documentation improvements, and also shed light on some exciting new offerings in Virtuoso. We are now expanding the scope of this series by broadcasting the voice of different bloggers and experts, who would continue to preserve the legacy of Virtuosity, and try to give new dimensions to it by covering topics across the length and breadth of Virtuoso, and a lot more… Click Subscribe to visit the Subscription box at the top of the page in which you can submit your email address to receive notifications about our latest Virtuosity posts.
Parul Agarwal and John Wilkosz (Team Virtuoso)