tag: clocks

Clocked DDR5 Client Memory Modules Enable Scaling To 9600 MT/s For AI PCs
By Carlos Weissenberg - 11 Jun, 2026 - Comments: 0

AI PCs are driving a new class of client workloads that behave very differently from traditional productivity or multimedia applications. Agentic AI systems are expected to plan, execute, and adapt in real time, maintaining persistent context while orchestrating multiple concurrent tasks. These usage patterns place sustained pressure on the memory subsystem, requiring not only higher peak bandw... » read more

Solving Clock Signal Integrity And Jitter Issues
By Manoz Palaparthi - 30 Apr, 2026 - Comments: 0

A recent blog post discussed the challenges of clock signal integrity and clock jitter in deep submicron semiconductor devices. Nice, clean clock signals are degraded due to many factors, including noise in the power delivery network (PDN). Timing variation due to clock jitter is also a serious issue, especially for chips operating at low voltage with high frequencies. The impact due to cloc... » read more

Research Bits: Mar. 9
By Jesse Allen - 09 Mar, 2026 - Comments: 0

Low noise clock generator Researchers from Ulsan National Institute of Science and Technology (UNIST) designed a low power semiconductor circuit capable of generating high-quality clock signals with significantly reduced noise levels. The injection-locked clock multiplier (ILCM) circuit uses a simplified design based on a ring voltage-controlled oscillator (VCO). It integrates a frequency t... » read more

The Design Challenges Of Clock Integrity And Clock Jitter
By Manoz Palaparthi - 15 Jan, 2026 - Comments: 0

Signal integrity is one of the many challenges faced by chip designers. Deep submicron technologies are unfriendly hosts for the nice, clean signals desired. The culprits that compromise signal integrity and introduce jitter include thermal effects, manufacturing flaws, signal crosstalk, IR (voltage) drop, signal loss over long runs, reflections, electromagnetic interference (EMI), ground bounc... » read more

Robust Dynamic Voltage Droop Mitigation And Power Management
By Graham Woods - 13 Jan, 2026 - Comments: 1

Power management is one of the keys for developing successful semiconductors products. There are virtually no applications for which power consumption is not a concern. Many creative solutions have been developed to reduce and manage power. Making these schemes work robustly in real-world conditions can be a challenge. This post considers widely used methods—voltage droop/glitch detection and... » read more

Top Five Trends In RTL Signoff
By Suresh Babu Barla - 30 Oct, 2025 - Comments: 0

By Suresh Babu Barla and Rimpy Chugh The “shift left” of the development cycle is critical for the huge, complex chips used in such applications as AI and high-performance computing (HPC). Identifying design issues at the netlist stage occurs far too late in the design development process. At this point, addressing such problems demands significant effort, primarily because most design-r... » read more

Mitigating Voltage Droop
By Aakash Jani - 13 Jun, 2023 - Comments: 0

Voltage droop, also known as IR drop, is a phenomenon that occurs when the current in the power delivery network abruptly changes due to workload fluctuations. This can lead to supply voltage drops across system-on-chips (SoCs) which can cause severe performance degradation, limit their energy efficiency, and in extreme cases can cause catastrophic timing failures. To avoid these issues, conven... » read more

Squeezing The Margins
By Barry Pangrle - 29 Mar, 2023 - Comments: 0

Back in 2016, we looked at the MediaTek Helio X20, the first Tri-Gear mobile SoC. Tri-Gear is a step beyond ARM’s big.LITTLE concept of using two different cores that have unique power and performance characteristics, by adding a third core. The main advantage to this approach is having more core choices to best run workloads at better energy efficiency and performance operating points. At... » read more

Adaptive Clocking: Minding Your P-States And C-States
By Aakash Jani - 23 Jun, 2022 - Comments: 0

Larger processor arrays are here to stay for AI and cloud applications. For example, Ampere offers a 128-core behemoth for hyperscalers (mainly Oracle), while Esperanto integrates almost 10x more cores for AI workloads. However, power management becomes increasingly important with these arrays, and system designers need to balance dynamic power with system latency. As we march year over year, t... » read more

Early Simulation Of Multi-Cycle Paths And False Paths
By Taruna Reddy - 24 Jun, 2021 - Comments: 0

Designing with synchronous clocks avoids metastability issues on clock domain crossings, but it presents its own challenges when multi-cycle and false paths are involved. A multi-cycle path (MCP) occurs when a logical function requires more than one clock cycle to produce a final, stable result. The designer must ensure that the destination register does not clock until the result is ready. Thi... » read more

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