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Robust Low Power Clock Synchronization for Multi-Die Systems
Conference proceeding

Robust Low Power Clock Synchronization for Multi-Die Systems

Ragh Kuttappa, Baris Taskin, Scott Lerner, Vasil Pano, Ioannis Savidis and IEEE
2019 IEEE/ACM INTERNATIONAL SYMPOSIUM ON LOW POWER ELECTRONICS AND DESIGN (ISLPED), v 2019-, pp 1-6
01 Jan 2019

Abstract

Computer Science Computer Science, Hardware & Architecture Computer Science, Software Engineering Engineering Engineering, Electrical & Electronic Science & Technology Technology
A novel clock generation and distribution network is proposed for multi-die architectures connected through an active silicon interposer. The proposed clock network generates and distributes a resonant clock through the active silicon interposer between dies, with each die served through resonant local clock trees. The proposed active silicon interposer rotary oscillator array (AI-ROA) serves to establish a unitary clock domain, providing constant phase and magnitude clock sources to the multiple die (i.e. multiple chiplets) in the package. Analysis is performed with multiple ARM CORTEX M0 cores per die of a homogeneous multi-die package architecture. Each M0 core of the multi-die package belongs to the unitary clock domain, designed with AI-ROA to operate at a frequency of 1 GHz. The multiple die are designed in the 28 nm technology node and the active interposer is designed in the 65 nm technology node. SP ICE based simulations of post-layout models provides analysis and evaluation of the proposed architecture for performance metrics under process, voltage, and temperature variations. In particular, performance metrics are reported for 1) power consumption in comparison to PLL based architectures designed and synthesized with an industrial tool, 2) robustness against process variations, and 3) clock skew across the cores throughout the multiple die.

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5 citations in Scopus

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Web of Science research areas
Computer Science, Hardware & Architecture
Computer Science, Software Engineering
Engineering, Electrical & Electronic
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