Shivani, Unfortunately no. The [Model] keyword’s I-V and V-t tables are “replaced” by the content of the [External Model] in that [Model]. They don’t get “added” together. This is explained in the IBIS v6.0 specification on the bottom of pg. 91: The intent behind [External Model] is to provide an upgrade path from native IBIS [Model]s to the external languages (one exception to this is the support for true differential buffers). Thus, the [External Model] keyword can be used to replace the usual I-V and V-T tables, C_comp, C_comp_pullup, C_comp_pulldown, C_comp_power_clamp, C_comp_gnd_clamp subparameters, [Ramp], [Driver Schedule], [Submodel] keywords, etc. of a [Model] by any modeling technique that the external languages allow. For [External Model]s, the connectivity, test load and specification parameters (such as Vinh and Vinl) are preserved from the [Model] keyword and the simulator is expected to carry out the same type of connections and measurements as is usually done with the [Model] keyword. The only difference is that the model itself is described by an external language. Thanks, Arpad =============================================================== From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Shivani Sharma Sent: Thursday, December 18, 2014 7:04 AM To: ibis-users@eda.org Subject: [IBIS-Users] Re: External Model of type series Hi To be more precise, Can IBIS file have I-V tables/V-t tables along with an external model that just models c_comp and series element (if present) in the form of s-parameters file. Since c_comp depends on frequency, is it possible to model just the c_comp and series elements (R/L/C) through s-parameters? common mode I-V and V-T tables would remain as it is thanks Shivani On Thu, Dec 18, 2014 at 12:07 PM, Shivani Sharma <shivanis1406@gmail.com<mailto:shivanis1406@gmail.com>> wrote: Hi Can [External Model] be of type series? Thanks Shivani -- This message has been scanned for viruses and dangerous content by MailScanner<http://www.mailscanner.info/>, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail mikelabonte@eda-stds.org |or ibis-request@eda-stds.org | |IBIS reflector archives exist under: | | http://www.eda-stds.org/ibis/email_archive/ Recent | http://www.eda-stds.org/ibis/users_archive/ Recent | http://www.eda-stds.org/ibis/email/ E-mail since 1993Received on Thu Dec 18 09:29:37 2014
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