Zero-latency datapath error correction framework for over-clocking DSP applications on FPGAs

Abstract

Errors in the datapath of digital systems usually come with a cost that can be very expensive, either as a consequence of uncertain functionality, or extra resources required to implement mitigation mechanisms, and extra latency to recover from errors. In this work we propose and demonstrate a novel framework which allows to recover from timing errors on a DSP application under extreme over-clocking without adding extra latency into the circuit. Demonstration of the proposed framework on a real-life image processing problem shows an improvement, on average, of 20 dB over typical implementations for doubling of the operating clock frequency.