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Politics : Formerly About Advanced Micro Devices
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To: Elmer who wrote (72615)9/20/1999 11:25:00 PM
From: Tony Viola  Read Replies (3) of 1573589
 
Elmer,

Data is valid every 1.25 NS so why do you call it anything but 800 MHz?

This horse must be buried about 400, or is it 800 feet deep by now. However, for the last time for me, here goes. Even though data is potentially valid every 1.25 ns., that time would be between a rising and a falling edge of a data line. The frequency of a signal is defined as the reciprocal of the time between successive edges of the same kind (both rising or both falling), not the reciprocal of time between the absolute successive edges, which would be one of each kind. Too complicated of an explanation, but I still say, in pure signal frequency definition, and, the basis of this argument which started out in terms of difficulty of routing the signals, it's 400 MHz. I quit. Wait, aren't there any Rambus engineers lurking to settle this?

Tony
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