Abstract

SpaceWire is a communications network being widely used onboard current spacecraft. It is designed to connect high data-rate sensors, large solid-state memories, processing units and the downlink telemetry subsystem providing an integrated onboard, data-handling network. SpaceWire links are serial, high-speed, bi-directional, full-duplex, point-to-point data links which connect together Space Wire equipment. Application information is sent along a SpaceWire link in discrete packets. Control and time information can also be sent along Space Wire links.This paper introduces the SpaceWire standard and describes the key features of SpaceWire. Development and test equipment designed to support users of SpaceWire is also described.

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