SAS word sync.

Seto, Pak-lung pak-lung.seto at
Mon Mar 3 09:39:07 PST 2003

* From the T10 Reflector (t10 at, posted by:
* "Seto, Pak-lung" <pak-lung.seto at>
Need clarification on SAS dword synchronization.

In the SAS doc 3d, clause 6.8 SP_DWS, Fig 63 SP_DWS state machine.

According to the state machine, it does not require to detect 3
"consecutive" primitives to declare dword synchronization.  It allows normal
valid dword in between the 3 primitives and still can claim dword
synchronization which is not the same as Fibre Channel.  Fibre Channel
requires 3 consecutive primiitves to be detected.  Is it what SAS want to
have word sync different from Fibre Channel?  If the answer is yes, is there
any reason why?


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