Subject: RE: [IBIS-Users] BIRD85.2 - Slew Time Estimate Clarifications
From: Muranyi, Arpad (arpad.muranyi@intel.com)
Date: Mon Dec 08 2003 - 10:45:37 PST
John,
In light of our discussion in the IBIS Open Forum meeting last Friday,
this is the way I would word that sentence (see ****| lines):
***| In models without the [External Model] keyword, data for [Ramp]
***| should be measured using a load that conforms to the
***| recommendations in Section 9: Notes on Data Derivation Method.
***| However, when used within the scope of [External Model], the
***| [Ramp] keyword is intended strictly to provide EDA tools with a
***| quick first-order estimate of driver switching characteristics.
***| When using [External Model], therefore, data for [Ramp] may be
***| measured using a different load, if it results in data that
***| better represent the driver's behavior in standard operation.
****| In this case, the R_load subparameter is optional regardless of
****| its value and will be ignored by EDA simulators.
This "regardless of its value" addition should take care of any possible
discrepancy with the sentence under the [Ramp] section that says:
| ... The R_load subparameter
| is required if a non-standard load is used.
Does this sound OK to you?
Thanks,
Arpad
======================================================================
|------------------------------------------------------------------
|For help or to subscribe/unsubscribe, email majordomo@eda.org
|with just 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 email a written request to ibis-request@eda.org.
|
|IBIS reflector archives exist under:
|
| http://www.eda.org/pub/ibis/email_archive/ Recent
| http://www.eda.org/pub/ibis/users_archive/ Recent
| http://www.eda.org/pub/ibis/email/ E-mail since 1993
This archive was generated by hypermail 2b28 : Mon Dec 08 2003 - 10:48:03 PST