One embodiment relates to an integrated circuit with an array of modular physical layer (PHY) slice circuits that are configured into multiple synchronous groups. Each synchronous group receives a delayed synchronous pulse signal provided by a chain of synchronous delay circuits. Another embodiment relates to an array of modular PHY slice circuits, each of which includes a manager circuit that manages the modular PHY slice circuit, a remap circuit that remaps interconnect redundancy, and an input-output module that provides outbound control and data streams and receives inbound control and data streams.