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Re: [10GBT] phy parameter list


Thanks for putting the list together.  I will try to get the list up on
the website by early next week (I'm on the road this week).

Just a note to the Task Force, I am a bit concerned about the lack of
discussion around this material and lack of technical discussions in
general.  For the Task Force to make progress, the reflectors should be
used as much as possible to discuss ideas and concepts.  Please do not
wait until our meetings to bring up issues or concerns, as we should be
using our meeting time to present information that is establishing or
has established consensus (hopefully via the reflector) to build out the
baseline and eventually a completed draft specification for Working
Group ballot.


Bradley Booth
Chair, IEEE P802.3an Task Force
512-732-3924 (W)
512-422-6708 (C)

-----Original Message-----
From: stds-802-3-10gbt@IEEE.ORG [mailto:stds-802-3-10gbt@IEEE.ORG] On
Behalf Of Geoff Thompson
Sent: Saturday, March 27, 2004 4:15 PM
Subject: Re: [10GBT] phy parameter list


I think it would be helpful to have the values from 1000BASE-T preserved
the spreadsheet as a basis for comparison.



At 05:05 PM 3/26/2004 -0800, Sanjay Kasturia wrote:
>I hope all of you have recovered from the visit to Disney World, from
>the ethernet guitar music and from the wild nights at Pleasure Island.
>While we made good progress in arriving at an agreement on the channel
>models and on the link specification front, I am obliged to point out
>that we will need to reach agreement on a number other critical
>parameters to have a reasonably complete draft 1.0
>I looked through the draft that George Eisler generated by modifying
>1000BASE-T spec and the large number of TBDs and listed some of the
>important ones in an excel spreadsheet. The spreadsheet is attached and
>I am sure Brad can help us put it on the website so it becomes a living
>document. If there are other critical parameters that should be listed
>in it, please send me email.
>I think participants should start thinking of presentations for the
>802.3an meeting to make a case for specific values for the parameters
>listed in the spreadsheet.
>I am collecting information on how the selection was made for
>and will come up with suggestions on how we can start the process of
>comparing different phy proposals in case there isn't unanimity on all
>the parameter values right from the start!
>Sanjay Kasturia
>Editor, IEEE 802.3an
>cell (650) 704-7686
>office (408) 653-2235
>Item #  Description                             Current proposals
>         PCS
>1       Symbol rate
>2       Modulation
>3       Frame structure
>4       Transmit encoding for FEC
>5       Transmitter bit to symbol mapping
>6       Transmit processing
>7       Transmit latency through PCS
>         PMA
>8       Transmit voltage specification
>9       Transmit pulse shaping
>10      Transmit master and slave jitter specifications
>11      Transmit linearity specifications
>12      Maximum allowable transmit distortion
>13      Transmit noise floor
>14      Transmit latency through PMA
>         Startup protocol
>15      state diagram for training
>16      Coefficient exchange if required
>17      Coefficient initialization if required
>18      Mode selection method if phy operates in multiple modes
>         Receiver performance requirement
>19      BER or FER over specified channel models             10^-12 for
>20      Receiver latency requirement