A 3.19pJ/b Electro-Optical Router with 18ns Setup Frame-Level Routing and 1-to-6 Wavelength-Flexible Link Capacity for Photonic Interposers

📋 论文概要

本文提出了一种基于28nm工艺和光子中介层的电光路由器，通过18ns快速链路建立和1至6波长灵活容量，实现了chiplet之间的非最近邻通信，能效为3.19pJ/b。解决了全局互连仅限于最近邻通信的问题。

💡 主要创新点

• 采用电光路由器结合光子中介层，支持chiplet间的非最近邻通信。
• 实现18ns链路建立时间的帧级路由，满足快速重配置需求。
• 支持1至6波长的灵活链路容量，适应不同带宽需求。

🏷 关键词

📄 原文摘要

Vincent Josselin2, Stéphane Malhouitre2, Laurent Mendizabal2, André Myko2, Damien Saint Patrice2, Rémi Vélard2, Jean Charbonnier2 CEA-List, Grenoble, France, 2CEA-Léti, Grenoble, France 1 Abstract Global interconnect on interposers between chiplets is currently mostly limited to nearestneighbor communication. We propose an electro-optical router in 28nm on a photonic interposer to handle queuing and routing between dies and optical link drivers capable of 18ns link setup time for frame-level routing, with 1-to-6 lambda flexible wavelength capacity. Compact analog drivers and standard-cell-based SerDes and clocking achieve 0.007mm2 active area per link and 3.19pJ/b power. Chiplet stacking using 3D and 2.5D integration has been a major evolution of large compute chips, using different possible integration schemes on organic, silicon or CMOS interposers. Nevertheless, global interconnects are facing multiple scaling issues with increasing

👥 作者与机构

Yvain Thonnart1, Christian Bernard2, Stéphane Bernabé2, Myriam Assous2, Laura Boutafa2, Benoit Charbonnier2, Rémi Franiatte2, César Fuguet1, Olivier Guille2,