Frame termination condition?

Seto, Pak-lung pak-lung.seto at
Fri Nov 8 09:26:29 PST 2002

* From the T10 Reflector (t10 at, posted by:
* "Seto, Pak-lung" <pak-lung.seto at>
How to determine a frame has been received?

A normal frame started with SOF and ended with EOF and the maximum payload
of a SAS frame is 1024.  In SAS, it allows certain primitive sequences to be
inserted between SOF and EOF.  Therefore, in theory, a frame can last for a
long time with inserted ALIGNs required by the standard or or rate matching.
What happen if hte EOF got corrupted or mutated?  and the frame recipient
keep receiving legal primitive sequences.  When can a SAS receiving port
abort "a frame"?  Does disparity error or dword decoding error treminate a
frame immediately?
It is unclear in the spec. what can or cannot terminate a frame and when a
frame can be terminated under all conditions.


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