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Technology Stocks : Rambus (RMBS) - Eagle or Penguin
RMBS 96.40+5.4%Dec 19 9:30 AM EST

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To: gnuman who wrote (72208)5/8/2001 2:28:25 AM
From: pheilman_  Read Replies (1) of 93625
 
re: And why do they need wide output compliance? Look's to me like a current
source is an excellent technical solution, but I'm interested in your reasoning.

I would say a current source is an excellent academic solution. It can also be lower power. Practical/pragmatic engineers know the extreme difficulty of troubleshooting a current bus. Consider that all the parts are BGA and the traces are controlled impedance, it is near impossible to instrument the bus to find out what is going on. It requires a current probe and a sensing loop. Yes, at high speeds, a current source is better, but the bus and the transactions better be dead simple or it will take a whole lot of time to get it to work. I don't think DRDRAM transactions qualify as dead simple, so it is not surprising that few, make that just one company is willing to take on the task.
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