25–27 Feb 2019
European Space Research and Technology Centre (ESTEC)
Europe/Amsterdam timezone

Common DPU and Basic SW for JUICE instruments

25 Feb 2019, 12:40
20m
Erasmus (European Space Research and Technology Centre (ESTEC))

Erasmus

European Space Research and Technology Centre (ESTEC)

ESTEC (European Space Research & Technology Centre) Keplerlaan 1 2201 AZ Noordwijk The Netherlands Tel: +31 (0)71 565 6565

Speaker

Felice Torelli (ESA)

Description

The JUpiter ICy moon Explorer (JUICE) spacecraft will provide a thorough investigation of the Jupiter system in all its complexity with emphasis on the three potentially ocean-bearing Galilean satellites, Ganymede, Europa and Callisto, and their potential habitability.
The JUICE spacecraft will carry a powerful remote sensing, geophysical, and in situ payload complement consisting of 10 instruments. Each instrument includes a Digital Processing Unit (DPU) and a dual redundant SpaceWire interface towards the Command and Data Management Unit (CDMU) and its embedded Science Mass Memory (SSMM).
This presentation describes the activity lead by the ESA project to procure a common DPU core and Basic Software (BSW) package aiming at the harmonization of the interface towards the CDMU to reduce development and integration risks.
The resulting hardware and software platform is based on GR712RC LEON3-FT that Cobham Gaisler developed in accordance with SAVOIR BOOT software generic specification and system requirements common to the 10 instruments.
The radiation hardened DPU platform features EDAC protected boot, application memory and working memory of configurable sizes, and SpaceWire, FPGA I/O-32/16/8, GPIO, UART and SPI I/O interfaces.
The hardware design has undergone PSA, WCA, Radiation analyses etc. to justify component and design choices resulting in a robust design that can be used in spacecraft requiring a total dose up to 100krad(Si).
The validated BOOT software includes low-level DPU initialization and the Standby Mode (part of the BOOT) handles SpaceWire/PUS communication with the CDMU as well as the selection, loading and execution of the instrument-specific Application Software.
Among 10 instruments, 7 use the common BOOT software, 6 of which also adopted the common DPU design.
Both DPU and Basic Software products are suitable for reuse in other scientific missions.

Presentation materials