Thanks Arpad... Can Mentor and Cadence tool vendors give comment about this if the tools applied the package RLC value to the power and ground pins as well? If not, may I know how the tools handle the effect caused by package parasitic i.e. IR drop? Thanks. -Andy "Muranyi, Arpad" <arpad.muranyi@intel.com> wrote: Andy, The problem is that the IBIS spec doesn't spell out that the package parameters are also to be applied to power and GND pins. In my opinion they should be used for those too, but it doesn't mean that all tool vendors do it. Arpad =========================================================== --------------------------------- From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Andy Joe Sent: Wednesday, July 27, 2005 4:18 AM To: ibis-users@eda.org Subject: [IBIS-Users] IBIS Question Hi, I have a question regarding the [Package] keyword in an IBIS file. As far as I am concerned, the RLC values in this section applied to all the I/O pins, my question is if these RLC values also applied to power and ground pins as well? If they are not applied to power and ground pins, how can we address the effects of different packages to the power and ground pins in an IBIS model? (If R_pin, L_pin and C_pin for every single pin are not available, only package min, typ and max RLC are available) Thanks. -Andy --------------------------------- Start your day with Yahoo! - make it your home page --------------------------------- Start your day with Yahoo! - make it your home page |------------------------------------------------------------------ |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 1993Received on Wed Jul 27 18:00:20 2005
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