Re: JTP: Feature List Priorities
Piers,
I'm very sorry. I lost track of Gareth's response and didn't
take into account those of you on the "other" west coast. I
do suppose that 9:30 in the evening is a bit late to participate
in a conference call. I could try to push it back a few hours
but that would mean losing a few people on our west coast. Let
me look at the times again and try something new. I probably
won't get back to this until later today.
Ben
"DAWE,PIERS (A-England,ex1)" wrote:
>
> Some thoughts:
>
> 1. I wonder if JTP is a bit of a misnomer: test patterns are used for
> various purposes e.g. OMA, extinction ratio, EMI, risetime,... Can we be
> more general, and yet distinguish this from XAUI test patterns, with "STP"
> for Serial Test Patterns?
>
> 2. As Jonathan and I have pointed out, we are unlikely to find the best
> ever test patterns, even if we find the best yet. My take on this is,
> rather than demand compulsory programmability for, or even existence of, a
> feature which is likely to be used "just once" for acceptance tests between
> supplier and customer, and never used out in the field, is that we recommend
> good practice but leave the whole thing optional so that industry practice
> can evolve to suit differing circumstances in the future. After all, we
> don't strictly _need_ any special test patterns at all to make serial links
> that work robustly (this statement may be specific to the scrambled line
> code, because signal and idle are randomised to have similar properties to
> each other). Special test patterns may be nice or convenient or allow us to
> avoid some over-engineering in the analogue domain (just as long as we avoid
> it in the digital domain) - but they aren't essential to building robust
> Ethernet.
>
> 3. Should we treat the LAN and WAN separately, with any WAN test
> patterns created in the WIS rather than the PCS, or consider creating test
> patterns for the WAN in the PCS?
>
> 4. > How does Tuesday, 3-Apr, at 1:30 PST sound?
> Pretty grim! I hoped you would take note of Gareth Edwards's email so I
> didn't repeat it - I'm in the UK too. But "prime time" (5-6pm in much of
> Europe, 4-6pm in UK, 8-10am in Pacific timezone) is often cluttered...
>
> Piers
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