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Technology Stocks : Rambus (RMBS) - Eagle or Penguin
RMBS 95.45+1.3%3:59 PM EST
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To: John Walliker who wrote (34600)11/15/1999 1:44:00 PM
From: Ali Chen  Read Replies (1) of 93625
 
John, <24. MINIMUM RISE OR FALL TIME = 1.000 ns>
Who cares what kind of bogus numbers are used in your
perfect simulations.
Stop fudging your numbers please. The RAMBUS spec,
rdram_128d_0059_10.pdf, says on p 44:

CTM and CFM fall and rise times min=0.2ns, max=0.5ns;

Data fall and rise times: min=0.2ns, max=0.65ns.

So I guess you are some 100% off, and your simulated
numbers with fudged down simulated parameters are
not very convincing.

<Now you suggest that theory is all very well but the results will be totally different in practice. OK then.
Go ahead and do some Monte Carlo simulations of a
Rambus...>
Simulations again? How do you expect a system to
run on simulations alone? Not a Monte-Carlo, but
"Real-Field" exercises have shown that there are
problems in mass manufacturability of RAMBUS -
two delays since March do say something. Or
these were the "simulated launches" only?

<Then let us all know what the safety margin is at the device inputs. I will be very interested to see your results. I don't see why I should do all the work myself.>

Certainly you should not. OEM did this work for you,
two times already, with two different set of parameters.
You know the result about margins - there appears to be
none :)
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