XAUI Jitter Agenda 21st Febuary
XAUI Jitter Agenda 21st Febuary
XAUI Jitter Telco
21st Febuary 2001
10:30 (PST)
19:30 (CET)
Duration 90mins
Outside US : +1 865 5253200
Inside US : 800 8919585
Participant Code : 674 870
Lines : 15
Goal for today´s telco, is to agree on the comments to be entered for
the D2.1.
Current comment and open issue list attached.
Participation list is also attached, please email me if you wish to
attend and your email address is not included.
Thanks for you participation.
Anthony Sanders
Principal Engineer
Infineon Technologies
Munich, Germany.
XAUI Jitter Agenda
21th Febuary 2001
0. Current comments to D2.1
Issue Section Page section line type comment proposal
------------- ---- ------- ---- ---- ------- --------
2.5.3 279 47.3.3 40 Tech 100 ohm load is under-specified +/-5% (>30 dB RL to 2.5 GHz)
4.6 281 47.3.3.4 3 Tech 10 dB RL is excessively restrictive TBD
281 47.3.3.5 24 Tech Excessively restrictive to spec to DC TBD
4.7 281 47.3.3.5 29 Tech 100 kHz limit on group delay too low TBD
? 281 47.3.3.5 11 Tech Far-end Jitter components underdefined TJ<=0.60UI, DJ<=0.36UI.
Add "Jitter" section 47.3.3.x and add to table 47-2.
3.2, 3.3 281 47.3.3.5 31 Tech Near-end Jitter components underdefined TJ<=0.35UI, DJ<=0.18UI. RJ rolls off at -20 dB/dec above TBD MHz.
10 283 47.3.3.5 2 Tech Min amplitude of template OK? TBD
4.6 284 47.3.4.3 34 Tech 10 dB RL is excessively restrictive TBD
3.3 284 47.3.4.4 45 Tech Spectrum of RJ unconstrained RJ rolls off from max at -20 dB/dec above TBD MHz.
1.2 285 47.3.4.4 3 Tech Low freq break should accomodate packet Change lower corner in figure 47-8 from
125 kHz and 1.5 UI to 22.1 kHz and 8.5 UI.
286 47.4.1 12 Tech Annex.48B.X not referenced fully TBD (Same applies to lines 16, 19 and 24.)
286 47.4.1 15 Tech Table x.x not referenced fully TBD
286 47.4.1 17 Tech "combined ... filter" not clear TBD
6.4.1 286 47.4.1 27 Tech CJPAT suitability for transmiter TBD
2.5.3 286 47.4.1.1 33 Tech Termination undefined Reference 47.3.3 for termination in 47.4.1.
Remove 47.4.1.1 and editors' note.
2.5.4 286 47.4.1.2 38 Tech Eye undefined TBD to define eye. Remove editors' note.
277 47.1.2 22 c Edit 7 cm implies excessive accuracy Change "7 cm" to "10 cm".
278 47.2 8 c Edit "Table" should not be capitalized Change "Table" to "table".
278 47.2 16 c Edit Editors' note no longer needed Remove editors' note.
279 47.3.3 40 c Edit "Table" should not be capitalized Change "Table" to "table".
280 47.3.3.3 30 c Edit CM RL of 5 dB disagrees with text Change "5" to "6".
281 47.3.3.5 11 c Edit "Table" and "Figure" shouldn't be cap. Chance to lower case.
281 47.3.3.5 17 Edit "transmission magnitude" is ackward Change to TBD throughout document.
281 47.3.3.5 17 c Edit First occurance of "ISI" unclear Replace "ISI" with "intersymbol interference (ISI)".
282 47.3.3.5 38 c Edit Figure 47-6 confusing Move x-axis to bottom of template.
283 47.3.4 39 c Edit Editors' note no longer needed Remove editors' note.
283 47.3.4 36 c Edit "Table" should not be capitalized Change "Table" to "table"
284 47.3.4.4 42 c Edit "Table" should not be capitalized Change "Table" to "table".
284 47.3.4.4 45 c Edit Gaussina discussion inappropriate Remove "Assuming a Guassian ... 5.5 ps RMS."
286 47.4.1 28 c Edit Space mising between "XAUI" and "shall" Add space.
------------------------------------------------------------
1.1 Break frequencies and amplitudes
A- Find FC white paper on investigation leading to SWAG number of
0.1UI and 1.5UI for amplitudes. (Allan) This action point shall be
closed upon studying of the Bell Labs document.
1.2 Very low frequency jitter definition frequency and amplitude
A- Comment to be entered
2.5.1 Annex 48B
A- An additional Annex shall be written to cover methodology
2.5.3 Termination Section
A- Comment to be entered
2.5.4 Receive Compliance Data Eye
Receive eye needs to be shown with and without sinusoidal jitter.
A- Suggestion to be entered to reflector (Anthony)
3.2 Transmit jitter
A- Comment to be entered
3.3 Random Jitter
Dawson bought the subject of bandlimiting the random jitter
definition for the transmitter.
A- Comments and further discussion required.
4.4 FEXT/NEXT (Cross Talk)
A- Crosstalking specifications from typical connectors to be
collected from connector manufacturers by Rich and Ali.
A- Theoritical simulation of expected differential crosstalk to be
done (Anthony)
4.6 Return Loss
A- ("Ishwar Hosagrahar" <ishwarh@xxxxxx>) to take over action of
providing nformation concerning this requirement.
- Perhaps RL for receiver should be left at 10dB.
- Comment from Ron Miller. (see below)
************************************************************
Hi anthony
I just got back from boston so could not join your concall.
However, when I read your agenda my hair stood on end. 8 db
should
not be a consideratiopn for Return loss.
If it should be changed it should be tightened up to 18 db and
should cover the frequency band from 200 Mhz to 10 Ghz. If
anyone makes equipment that poor(8db) I can assure you that all
the other system specs will be violated with 10E-12 ber
available only for inch length traces. There are some real bad
trade-offs here.
Please post this for comments.
Ron Miller
************************************************************
4.7 Group Delay of Channel
- New low frequency limit and amplitude of group delay specification
from Compliance Group.
A- Must be discussed at next Telco.
4.8 S11 for channel definition
A- Should we have a S11 defined for the channel. To be discussed in
next Telco.
6.4 Defined patterns
A- Final acceptance of proposed pattern.
A- It was requested that Rich could possibly explain how the
compliance pattern can be generated from MAC.
6.4.1 Compliance Definition
A- Adhoc to agree on use of CJPAT for transmit and receive
compliance testing
10. Overall Verification of Jitter Budget
A- Ongoing simulations for verification of newly proposed jitter
numbers and patterns are ongoing by
- Jeff Cain
- Tom Gray
- IFX
- See below
- Mysticom
- See below
- Jeff Porter
- No resources available
- Dawson
Ali Ghiasi <aghiasi@xxxxxxxxxxxxx>,
Anthony.sanders@xxxxxxxxxxxx <anthony.sanders@xxxxxxxxxxxx>,
Adam Healey <ahealey@xxxxxxxxxx>,
Bijit Patel <bijit_patel@xxxxxxxxxxxxxx>,
Bob Smith <robert@xxxxxxxxxxxxxx>,
Dennis Petrich <dpetrich@xxxxxxxxxxxxx>,
Jeff Cain <jcain@xxxxxxxxx>,
Jeff Porter <j.porter@xxxxxxxxxxxx>,
Jim Hesson <jhesson@xxxxxxxxxxxxxx>,
John Wright <john.wright@xxxxxxxxx>,
Mike Jenkins <jenkins@xxxxxxxx>,
Peter Dartnell <dartnell@xxxxxxxxxxxxxxxxxx>,
Richard Dugan <richard_dugan@xxxxxxxxxxx>,
Robbie Shergill <robbie.shergill@xxxxxxx>,
Ron Miller <rmiller@xxxxxxxxxxx>,
Schelto vanDoorn <schelto@xxxxxxx>,
Shawn Rogers <s-rogers@xxxxxx>,
Leo Wong <lwong@xxxxxxxxxxxxxxx>,
Jason Chen <jchen@xxxxxxxxxxxxxxx>,
Kesling Dawson W <dawson.w.kesling@xxxxxxxxx>,
Allan Liu <allan_liu@xxxxxxxxxxx>,
Tord Haulin <tord.haulin@xxxxxxxxxxxxx>,
Tom Lindsay <Tom.Lindsay@xxxxxxxxx>
Rich Taborek <rtaborek@xxxxxxxxxxx>,
Doug.Day@xxxxxxxxxxxxxxxx,
"Ishwar Hosagrahar" <ishwarh@xxxxxx>,
Frank Barber <Frank_Barber@xxxxxxxxxxxxxx>,
Joel Dedrick <Joel_Dedrick@xxxxxxxxxxxxxx>,
Farzin Firoozmand <Farzin_Firoozmand@xxxxxxxxxxxxxx>