Re: [802.3ae] Clause 48: Check_end Question
I'll run some diagnostics on my "English V1.0" parser :-)
Thanks also to Pat and Rich from myself.
Gareth
"Douglas T. (Doug) Massey" wrote:
>
> pat_thaler@agilent.com said:
> >The normative text for check_end has the same meaning as the text you
> >quote. The relevant sentence from the check_end definition is: The
> >XGMII Error control character is returned in all lanes less than n in
> >||T||, where n identifies the specific Terminate ordered-set ||T n ||,
> >for which a running disparity error or any code-groups other than /A/
> >or /K/ are recognized in the column following ||T||.
> >
> >Error is returned in lanes less than n in ||T|| for which an error is
> >recognized in the column following the ||T||.
> >
> >Doug's interpretation of the sentence is not correct. It does not say
> >that an error is returned in lanes less than n when an error occurs in
> >the column after the ||T||. The subtle thing in the sentence is "lanes
> >... for which".
>
> Fair enough. I'm happy to hear that I was wrong, since I'd designed
> my core the other way . . . :-)
>
> >The sentence is perhaps a little hard to read and the next sentence
> >(the one about returning an error in the column before the T) is
> >written a bit more clearly. Adding "in the corresponding lane" would
> >hammer the point home better (especially since when the next sentence
> >uses it the reader thinks that this sentence not having it means
> >something), but it shouldn't be essential.
>
> I'd agree -- it's what threw off my verification expert (who initially
> pointed out the problem to me) and confused me more the more I thought
> about it. I would certainly agree that adding "in the corresponding
> lane" would make it much more understandable.
>
> Thanks to everyone who responded!
>
> Doug
> -- -------------------------------------------------------------------
> ___, Doug Massey, ASIC Digital Logic Designer
> \o IBM Microelectronics Division, Burlington, Vermont |>
> | Phone: (802)769-7095 t/l: 446-7095 fax: x6752 |
> / \ |
> . My homepage: http://doug.obscurestuff.com (|)