RE: RF/LF
Boaz,
If sending continuous ordered sets, the 64B/66B PCS still needs to be able
to do clock compensation. Otherwise it will have FIFO overruns.
Pat
-----Original Message-----
From: Boaz Shahar [mailto:boazs@xxxxxxxxxxxx]
Sent: Monday, January 29, 2001 11:02 PM
To: 'THALER,PAT (A-Roseville,ex1)'; Boaz Shahar; Tim Warland; 802.3ae
Subject: RE: RF/LF
Pat,
If the PHY-XGXS discovers LF fault on the Tx XAUI path and generate
continuous POS, why cant the PCS just transfer it as is? In the worst case,
the other side XAUI will transmit continuous POS (P+/P-) and even if
SYNC/DESKEW is lost in the other side, its still interpreted as LF there.
Boaz
> -----Original Message-----
> From: THALER,PAT (A-Roseville,ex1) [mailto:pat_thaler@xxxxxxxxxxx]
> Sent: Monday, January 29, 2001 9:04 PM
> To: Boaz Shahar; THALER,PAT (A-Roseville,ex1); Tim Warland; 802.3ae
> Subject: RE: RF/LF
>
>
> Boaz,
>
> That applies when there is no XAUI and it also applies when
> the Phy XGXS
> attached to the PCS is generating LF. The XGXS/10GBASE-X
> receiver now sends
> continuous LF to the XGMII interface when it detects a loss
> of alignment.
>
> Pat
>
>
> > -----Original Message-----
> > From: THALER,PAT (A-Roseville,ex1) [mailto:pat_thaler@xxxxxxxxxxx]
> > Sent: Wednesday, January 24, 2001 11:19 PM
> > To: Tim Warland; 802.3ae
> > Subject: RE: RF/LF
> >
> >
> >
> > For the change to the receive state machine, see comment 1159
> > which removes
> > the detection of |P| (which in d2.1 will be |Q|) which is the
> > behavior Boaz
> > mentions. The decision to send constant ordered sets on the
> XGMII when
> > detecting a local fault was made. Comment 267 was part of
> > that, but the full
> > resolution isn't in that comment's response. Also see comment
> > 592 and 588.
> > These resolutions also impact clause 49 because it will now
> > need to be able
> > to drop pulse ordered sets,
>
> You probably mean when there is no XAUI, right?
>
> Boaz
>
>
>