RE: [802.3ae] XAUI Rj TR comment
Howard,
In the block diagram on page 11, The "recovered data" and "recovered clock"
that goes from the DUT to the BERT are the digital I/F (i.e. ~80 signals
with 156Mhz) or a XAUI bus with reference clock?
Thx.,
Boaz
> -----Original Message-----
> From: Howard A. Baumer [mailto:hbaumer@xxxxxxxxxxxx]
> Sent: Monday, July 30, 2001 9:22 PM
> To: HSSG_reflector (E-mail)
> Subject: [802.3ae] XAUI Rj TR comment
>
>
>
> To all concerned,
> I put in a TR Comment against D3.1 stating the desire to put a
> maximum
> limit on the TX Rj. This comment was rejected and left unresolved.
> There was fairly wide agreement that having a max limit on TX
> Rj should
> be done but that we should first get a broader input on what
> this limit
> should be. I took on the action item to start a reflector
> discussion to
> determine this limit.
> The current draft sets a limit for Tj and a limit for Dj and then
> defines Rj aa Rj = Tj(max) - Dj(actual). The TR comment
> proposes that a
> limit be set for Tj, Rj and Dj and that Rj(actual) + Dj(actual) <
> Tj(max). There is a presentation that we are developing that
> attempts to figure out a limit for Rj. It can be found at
> http://www.ieee802.org/3/ae/public/documents/XAUIjittercomments.pdf.
> Please review and comment.
> This presentation also brings out a problem with the
> current Jitter
> Tolerance test technique.
>
> Howard Baumer
>