[Sls-slp] Your LFSR OID frame RIDs affecting USLP, TM, AOS SDLPs

Kazz, Greg J (US 312B) greg.j.kazz at jpl.nasa.gov
Mon May 17 16:30:39 UTC 2021

Hi Ken,

The SLP WG decided to put both of your diagrams into a new non-normative annex in USLP, TM, and AOS.
The text in the normative part of the link layer books will state:

The TFDZ of an OID Transfer Frame shall be generated by use of a 32-cell Linear Feedback Shift Register (LFSR) with polynomial 1 + D + D2 + D22 +D32, see Annex X.

Where Annex X is TBD and will be added by me to the document.

We have some questions and requests for you:

  1.  Why does the initialization data differ from one figure to the other one?
  2.  The ‘1’ in the figures are misleading to some WG members, please replace ‘1’ with D sub zero i.e., D0 in the figures.
  3.  Consensus of WG was to specify the initialization vector


Greg Kazz
Principal Engineer
Technical Group Supervisor,
Jet Propulsion Laboratory
4800 Oak Grove Dr., M/S 301-490
Pasadena, CA 91109
1+(818)393 6529(voice)
1+(818)393 6871(fax)
email: greg.j.kazz at jpl.nasa.gov

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