To: t10@t10.org
Subject: Special item for SAS PHY teleconference this Thursday
From: Alvin.Cox@seagate.com
Date: Tue, 17 Oct 2006 08:53:53 -0500
X-Message-Number: 7334
Formatted message: HTML-formatted message

Question came up regarding the OOB requirement for OOB for all future 
speeds. This topic will be discussed as the first item on the next call.
Reasons for 1.5Gbps OOB:
OOB detection typically done with separate circuitry.
OOB circuitry benefits from 1.5Gbps limit.
1.5Gbps is easier to send through the channel and has less loss than 
higher frequencies. Also does not require equalization for recovery.
SATA requires 1.5Gbps OOB, so the capability at 1.5Gbps is necessary for 
compatibility of PHY's that attach to SATA.
I realize this is only one side of the argument, but these are some of the 
reasons why the statement is there. The discussion should cover both sides 
of the situation.
Next conference call October 19, 2006 
Agenda:
1.	OOB signals to be 1,5 Gbps for all future implementations?
2.	http://www.t10.org/ftp/t10/document.06/06-324r5.pdf
3.	New items
PARTICIPANT INFORMATION: 
Toll Free Dial in Number: (866) 279-4742 
International Access/Caller Paid Dial In Number: (309) 229-0118 
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Webex information: 
https://seagate.webex.com/seagate
Topic: SAS-2 PHY WG 
Date: Thursday, Oct 19, 2006 
Time: 10:00 am, Central Daylight Time (GMT -05:00, Chicago) 
Meeting number: 826 515 680 
Meeting password: 6gbpsSAS
Minutes from last week posted at. No real details except as above.
http://www.t10.org/ftp/t10/document.06/06-457r0.pdf
Alvin Cox
Seagate Technology, LLC
Tel 405-350-7424
Cell 405-206-4809
E-Mail	alvin.cox@seagate.com