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

Kazz, Greg J (US 312B) greg.j.kazz at jpl.nasa.gov
Fri May 21 15:30:33 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 in both of the diagrams

New Info:

Do you concur with these changes ?
If so, the SLP WG will wait for your modifications to those diagrams and thereafter I will insert them into the AOS, USLP, and TM pink sheets.
When might we receive them ?

Best regards,

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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