Configurable error correction for multi-wire errors in switch-to-switch SOC links

We present a configurable error correction scheme, combining a set of single-error correction (SEC) codes with interleaving, to achieve reliable and energy-efficient SoC links. Both the encoder and interleaver adapt to different noise conditions in order to address adjacent multi-wire errors. Using this approach, we achieve residual flit-error rate one order of magnitude less than with a simple SEC code. For a given reliability, the proposed approach achieves up to 15% power improvement over a fixed coding scheme. Furthermore, an XOR-tree-sharing method reduces codec area overhead by about 30%.