SAS rate matching - ALIGNs in OPEN

Elliott, Robert (Server Storage) Elliott at
Tue Feb 18 13:39:52 PST 2003

* From the T10 Reflector (t10 at, posted by:
* "Elliott, Robert (Server Storage)" <Elliott at>
sas-r03 7.15 Rate matching says:
    The OPEN address frame itself may or may not have ALIGNs

A letter ballot comment asked that we be very precise in mandating that
the first dword after the OPEN address frame shall be an ALIGN,

    After transmitting the OPEN address frame, the source phy shall
start rate matching at the selected connection rate. The first dword
after the EOF shall be an ALIGN or NOTIFY for rate matching. 

Should I keep or delete the sentence about ALIGNs (and NOTIFYs) in the
OPEN address frame?  It's true, but might lead someone to think they
should start rate matching in the OPEN (there's probably no reason to do

Rob Elliott, elliott at
Hewlett-Packard Industry Standard Server Storage Advanced Technology

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