[SI-LIST] Re: SSTL-2 question
- From: steve weir <weirsp@xxxxxxxxxx>
- To: linwee70@xxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Sun, 28 Mar 2004 13:19:02 -0800
Lin,
a) To the extent that the waveform distortion is reduced, yes. However
there are additional factors. You have more work to do than to just stick
in damping resistors.
b) I don't know how much you mean by "too much". If you are beyond the
device specifications, you have more serious problems than just timing. If
because you have only one or two chips that are very close to the
controller, you don't have significant transmission line issues, then it is
possible that you don't need additional damping.
Steve
At 12:04 PM 3/28/2004 -0800, Lin Wee wrote:
>Experts:
>
>I have two simple questions regarding DDR SSTL-2
>interface:
>
>a) Does series termination help manage skew b/w data
>and strobe lines ?
>
>b) Can i live without the series resistor if i don't
>have too much of overshoot/undershoot ? Don't tell me
>that the spec says that.
>
>Regards;
>Lin
>
>
>
>
>
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