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From: "ckw1972" <ckw1972@xxxxxxxxxxx>
To: si-list@xxxxxxxxxxxxx
Date: Fri, 22 Aug 2003 00:48:30 -0000

Hi,

I've a question on the DDR-II SDRAM (SSTL-18 class-II) spec as below, 
can someone help me to understand this correctly? Thanks in advance.

1. Why they is no clear capacitance load spec specify on the memory 
spec?
    For example, samsung 512M 200Mhz DDR-II SSTL-18 class-II device 
datasheet
    only specify their AC load reference is just connect DQ pin to 
Vtt thru one 25ohm
    resistor. My understanding on this is with Cload=5pF & Cload=0pF 
will impact on
    the 200Mhz performance quite significantly.


Thanks
Regards,
CKW

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