Common Path & Clock Reconvergence Pessimism Removal
Many a time your chip is overdesigned due to undue pessimism in timing calculations. Pessimism in timing analysis makes it difficult for designs to close timing and it is imperative… Read more »
Many a time your chip is overdesigned due to undue pessimism in timing calculations. Pessimism in timing analysis makes it difficult for designs to close timing and it is imperative… Read more »
For clock trees, the traditional way is to go with zero skew or balanced skew. For each of the sinks, the insertion delay is kept to be equal so that… Read more »
Let us continue with the physical only cells present in the standard cell libraries that ease the digital PD flow. Filler Cells Well Tap Cells Decap Cells Filler Cells Once… Read more »
In PD flow, you must have come across the term physical only cells. Let us explore a few of them. Well Tap Cells Decap Cells Filler Cells Well Tap Cells… Read more »
As we saw in the earlier article on ICG, a gated clock is when you use a logic gate to control or enable to the propagation of clock to certain… Read more »
Noise margin is the amount of noise a circuit can withstand without compromising its operation. These values are defined so that optimization and analysis can ensure that the spurious signals… Read more »
Minimum pulse width checks are done to ensure that width of the clock signal is wide enough for the cell’s internal operations to complete. i.e. to get a stable output… Read more »
Clock gating is a common technique for reducing clock power by shutting off the clock to modules by a clock enable signal.Clock gating functionally requires only an AND or OR… Read more »
By default, we expect every timing path to meet setup time in a single clock cycle. However, we can also specify that some data is captured only after a specified… Read more »
I. NetlistIn & Floorplan II. Placement III. Clock Tree Synthesis IV. Routing After routing, your layout is complete. Now a number of checks are performed to verify that the drawn… Read more »