Hi Venu, Basically you need a non-ideal power delivery model in order to see the effects of split c_comp. I recommend that you use a fully coupled (and frequency dependent would be even better) sig/pwr/gnd package+PCB model that has ports at the driver, receiver, and power supply locations. There has been a lot of exploration work regarding how to split c_comp over the past 1.5 years. Zhiping Yang has published a few documents about his techniques - it's a good place to start if you haven't seen them yet. I believe this was his latest paper: http://www.vhdl.org/pub/ibis/summits/dec05/yang.pdf Just let me know if you have any other questions. Thanks, Sam -----Original Message----- From: owner-ibis-users@server.eda-stds.org [mailto:owner-ibis-users@server.eda-stds.org] On Behalf Of Ummalaneni, Venu Babu (Venu) Sent: Monday, July 17, 2006 4:23 AM To: ibis-users@server.eda-stds.org Subject: [IBIS-Users] Test case to see the sensitivity of split C_comp values Hi Gurus, Could some one suggest me a test case which can be useful for observing the sensitivity of split C_comp values of IBIS? Need for the test case: I am extracting the split C_comp values of the IO buffer from two different approaches. I need to select one of the approach by correlating with hspice model. For that, I need a test case that is very sensitive to split C_comp values. Thanks in advance. Best Regards, Venu sensitivity -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.org |with the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993 -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.org |with the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993Received on Mon Jul 17 11:22:16 2006
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