Multi-protocol retimer enabling transparent and non-transparent bridging for memory fabrics including pcie, cxl, or ualink

Abstract

Modern datacenters require flexible interconnect solutions that bridge diverse protocol domains while maintaining compatibility with existing infrastructure. Embodiments herein disclose semiconductor devices that implement protocol translations and physical address translations within IC packages conforming to the PCIe Retimer Supplemental Features and Standard BGA Footprint Specification. The devices comprise first and second interfaces communicating according to first and second protocols respectively, with an embedded computer that extracts physical addresses from messages received via the first interface, translates these addresses, and generates messages carrying the translated addresses for transmission via the second interface. This retimer-compatible form factor essentially enables drop-in deployment within existing PCIe and cabling infrastructures while providing protocol bridging and address translation capabilities. The standardized BGA layout provides high-speed differential signaling suitable for low-latency address translation, optionally supporting memory disaggregation, host-to-host memory sharing, accelerator integration, and protocol conversion between CXL, UALink, NVLink, and/or PCIe domains, addressing interoperability challenges.