SpaceFibre (ECSS-E-ST-50-11C) is the latest generation of spacecraft onboard data-handling networks, evolving from the widely adopted SpaceWire standard to meet the increasing demands for higher data rates, enhanced reliability, and robust quality-of-service (QoS) capabilities. SpaceFibre reached TRL-9 in April 2021. Recent developments have further enhanced the capabilities of SpaceFibre, addressing challenges associated with advanced space missions.
A higher-speed variant of SpaceFibre using 64b/66b encoding surpasses current solutions based on 8b/10b encoding, which can achieve lane rates in the order of 10 Gbit/s, resulting in 40 Gbit/s link rates on a quad-lane link. The novel and efficient encoding scheme enables lane speeds of 25 Gbit/s in current space-qualified technology with minimal protocol stack modifications. An initial implementation demonstrated aggregate data rates of 100 Gbit/s using a quad-lane configuration and was successfully validated on an AMD Versal FPGA during heavy-ion radiation testing campaign.
To support these high speeds efficiently, a SpaceFibre Processor Endpoint has been developed to integrate SpaceFibre networks with processor-based System-on-Chips (SoCs) running operating systems such as Linux. Performance results confirm the effectiveness of this integration strategy, demonstrating substantial benefits for representative spacecraft data-handling systems. This hardware-accelerated endpoint interface achieves data rates into user-space memory at tens of Gbit/s with minimal processor overhead.
This paper presents the new higher-speed variant of SpaceFibre. Then introduces the SpaceFibre Processor Endpoint and software, demonstrates different implementations, and analyses performance results. Collectively, these advancements significantly enhance the throughput, efficiency, and integration flexibility of SpaceFibre. They open new possibilities for spacecraft data-handling architectures, enabling unprecedented levels of performance and reliability.

SpaceVNX+ is a small form-factor standard for space flight electronic units, which aims to provide high-performance, high reliability, flexibility, modularity, scalability and interoperability. SpaceVNX+ modules plug into slots in a backplane in a unit. The electrical, mechanical and thermal interfaces of those modules are defined. The backplane and unit design is up to the user, giving considerable architectural flexibility while realizing the cost advantage of standard modules. Of course, standard backplanes and units are also possible. This paper introduces SpaceVNX+, describes a redundant SpaceVNX+ architecture, outlines the module profiles (signals on the backplane connector) and then describes a couple more example architectures.