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

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Webex information:
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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