[10GBT] phy parameter list
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 the
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 next
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 1000BASE-T
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
sanjay@teranetics.com
cell (650) 704-7686
office (408) 653-2235
Item # Description Current proposals
approved
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
BER, FER??
20 Receiver latency requirement
parameterlist.xls