In this article, we are going to discuss the input files required in various stages of pnr and signoff. We can categorise the set of inputs into two parts, one is mandatory and the other is an optional set of inputs. A. Place and Route stages: I. Pre Placement Stage Gate level netlist Logical Library … Read more
Placement is a very important stage of physical design where all the standard cells get placed inside the core boundary. Overall QoR of the design greatly depends on the fact that how well placement is done. You must have noticed that the placement stage takes quite a large runtime. Actually, the tool performs various steps … Read more
In this article, we will discuss what are the inputs required to begin the physical design. In the previous article, we discussed the physical design flow and sanity checks before the floorplan. Inputs required for physical design can be categorised broadly into two types. Some inputs are mandatory in all the cases but some are … Read more
Sanity checks are an important step for physical design engineers to make sure that the inputs received for physical design are correct and consistent. Any issues in the input files may cause problems in the later stages. So it is important to perform the sanity checks in the initial stage that is when the design … Read more
In RTL to GDS flow, Physical Design is an important stage. In physical design, synthesized netlist, design constraints and standard cell library are taken as inputs and converted to a layout (gds file) which should be as per the design rules provided by the foundry. Further, this layout is sent to the foundry for the … Read more
In this post, ASIC (Application Specific Integrated Circuit) Design flow has been explained. The very first step of ASIC flow is design specification, which comes from the customer end. Where customer writes down the specification of the chip basically the functionality which he wants to develop in a chip. The whole design process is going through various … Read more