Align rotation on a multiplexed link

Bill.Martin at Bill.Martin at
Fri Apr 25 13:45:28 PDT 2008

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The SAS specification seems does not specify whether ALIGN rotation is
on a per logical phy or on a per physical phy.	I realize that there is
no difference at the receiving end since the receiver does not check for
ALIGN rotation.  There is a slight issue that there may be a difference
on a multiplexed link if this is done on a per logical phy basis as you
may get doubles of each ALIGN if both links are sending ALIGNs at the
same time.  This could be clarified with simple wording in if it
is deemed to be an issue.
Bill Martin
Office of Technology
Industry Standards
916 772-3658
916 765-6875 (Cell)
bill.martin at

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