FreeLists / si-list / [SI-LIST] About the Cref in IBIS Model

["cheng yin" <yinko_cheng@xxxxxxxxxxx>]

Hi,

I got a IBIS Model file from the device producer. 
I find this text in one output model :      Rref = 500ohms . and no Cref 
here.
But in the DataSheet of this device, it told me the t_pd measurement 
information is
                                RL = 500ohms to GND,  CL = 50pf to GND .

I want to caculate the propogation delay and final settle delay of this 
device. I'm using
cadence's SpecctraQuest tool. So I think I should add 'Cref = 50pf' to the 
IBIS file. Am I right?

Who can tell me how to do it?

thanks


Yinko

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