Spacewire receiver: synchronization for different clock domains

Abstract

The SpaceWire standard, used in aerospace embedded applications, was developed to connect devices that operate at high data rates, having as goals the traffic control and payload transmission. This standard enables flexibility on transmission rates, which brings some challenges related to clock domains. In an effort to fulfill the essential system requirements, such as reliability and versatility, synchronization techniques are introduced to avoid possible problems related to the clock domain crossing. The objective of this work is to present a technique applied to SpaceWire Receiver that enables its operation at many signaling rates.