CMS Scheme in Self-Adaptive System for Addressing Permanent Errors in On-Chip Interconnects

Abstract

Current-mode signaling (CMS) with dynamic overdriving  is one of the most promising scheme for high-speed low power  communication over long on-chip interconnects. We propose a self-sufficient adaptive system for identifying by giving CMS circuit as input, transmitting it and avoiding permanent errors in on-chip interconnects. The proposed system redirects data on erroneous links to a set of spare wires without interrupting the data flow. For detecting the permanent errors , a novel in-line test (ILT) method using spare wires is proposed. In the presence of permanent errors, probability of correct transmission in the proposed systems is improved by 38% area, 64% energy, and 61% latency improvements.