[SI-LIST] Re: DDR simulation

Zhangkun, did you forget the series damping resistors?
Steve.
At 01:58 PM 2/26/2005 +0800, Zhangkun wrote:

>Dear all
>I am simulating about DDR. The topology is following:
>
>                            (800mil)
>Driver==================================================r_pull
>            (4000mil)      |       |      |      |
>                           |       |      |      |
>                          load    load   load   load
>
>The simulaiton result shows that the waveform at the first load is very 
>bad. How to improve it? The DDR is of 400MHz. The stub at near load is 
>only 100mil.
>
>Best Regards
>
>Zhangkun
>2005.2.26
>
>
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