Abstract
This chapter provides the technical description of the system’s I/O-Boards and the CCSDS-Boards for telecommand decoding and telemetry encoding. The approach for these two OBC components is a common design for the printed circuit boards of both board types, just with differing chip population. Both of these board types are available with singleredundancy inside the OBC and are connected to the two OBC Processor-Boards via cross coupled SpaceWire links running RMAP protocol. A key characteristic is that although implementing completely different functionalities both boards are based on the same 3U printed circuit board, FPGA chip and I/O driver ICs design.
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Notes
- 1.
If the JTAG function is required (for example, to load new firmware) the “grounded” pin may be connected via a 1 KΩ resistor to ground and the programmer can then be wired directly to the connector pin. The JTAG programmer should be disconnected when it is not being used to ensure correct board operation.
The board will then respond to requests sent to logical address 0×21.
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© 2013 Springer-Verlag Berlin Heidelberg
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Cook, B.M., Walker, P., Peel, R. (2013). The I/O-Boards. In: Eickhoff, J. (eds) A Combined Data and Power Management Infrastructure. Springer Aerospace Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35557-8_3
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DOI: https://doi.org/10.1007/978-3-642-35557-8_3
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Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-35556-1
Online ISBN: 978-3-642-35557-8
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