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Showing posts from April, 2026

Relationships are async clock interfaces

  A relation between any two individuals is an asynchronous clock domain interface with two different clocks on either side. Very rarely the interface is synchronous. The power domains, voltages, signoff corners can be different. Each following a different protocol. To make it work still, a suitable synchroniser logic needs to be built as a bridge with sufficient depth. One may be running at high voltage at some point but Level shifters need to be added to get along. One may be down, power gated sometimes and isolation cells may be needed with appropriate controls. Retention helps to maintain the relationship. The interfacing logic still need to be placed closer with max delay constraints and skew and latency requirements so they listen to each other still. The setup has a cushion but hold with a lot of patience need to be closed at cross corners covering the extremes. Temperatures may rise and cold wars may arise but hold needs to be closed to maintain the functionality. It should...

the voltage vocal cords...

 Everyone has a buffer in their vocal cord…if you use a high drive strength and shout, it may drive the signal farther and deeper but it adds lot of xtalk, noise violations, power wastage, needs lot of shielding and can sometimes violate hold which we cannot take back with an apology buffers…always use optimal drive buffers, set high drive buffers as don’t use…for a longer reliability in relationships.. some people have an entire 8 bit octave control bus with DVFS and power gating installed and when they sing, the signals switch simultaneously and melodiously.. normally one should use inverter pairs so the duty cycle distortion is balanced...the inverter pair indicates whenever the voltage rises, we better fall it back to reduce the distortion of the meaning what we want to convey... if one has an odd number of inverters, obviously the lec fails and to make lec pass, more inverters are added which makes it difficult to debug and fix the lec eventually... very low drive buffers do n...

RetirEMigration Limits

 Many people build strong careers and reach very high positions and roles like VP, SVP, Sr Dir and all. They would have started from deep nwell and substrates and built a strong foundation with their talent, skills, capabilities like active, non linear devices. They would have built strong drive strengths that can handle large capacitances, transitions. Over a period of time, they move up the metals, layer by layer, through the competitive congestion, networking on the way with useful xtalk, collaboration with others. They reach to the top layers with strong via pillars. At the top, they draw the required power and current from the bumps and distribute to their orgs and teams. The resistance at the top is lesser and congestion is lesser. They normally then are used to talking more, giving instructions and not much of listening. The top layer widths are more and they can handle more current and the people at top handle lot more pressure. so far so good but the issue comes up when th...