Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Rambus (RMBS) - Eagle or Penguin -- Ignore unavailable to you. Want to Upgrade?

To: Bilow who wrote (30744)	9/27/1999 5:06:00 AM
From: John Walliker	Read Replies (2) \| Respond to of 93625

Carl, F) Evidently, according to part (A), the Camino drivers for control lines are working fine. A difference between those drivers and the data bus drivers, is that the data bus drivers have to be able to drive 14 ohms because the data bus is doubly terminated, while the control bus may only have to drive 28 ohms. I haven't bothered to check whether the Rambus Channel requires double termination on the control bus, it may well require it. No, Rambus does not terminate at the controller end. All the signals are driven equally. Such a problem could arise if there was problems with the VRef signals. I have had some difficulty with understanding the VRef specs on DDR, nobody ever seems to specify the input impedance, capacitance, or current requirement of those pins... For Rambus VREF is a DC signal and is decoupled with a capacitor for every pair of chips. John