Andy, Sorry for the "canned" answer but such tool specific questions are best if directed to the vendor... To be honest, I don't know these details about these tools, and I don't want to give you misleading answers. Plus, the answers may not be a simple yes or no either. Arpad ================================================================== ________________________________ From: Andy Joe [mailto:andy_joe123@yahoo.com] Sent: Wednesday, July 27, 2005 5:59 PM To: Muranyi, Arpad; ibis-users@eda.org Subject: RE: [IBIS-Users] IBIS Question 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 <http://us.rd.yahoo.com/evt=34442/*http://www.yahoo.com/r/hs> ________________________________ Start your day with Yahoo! - make it your home page <http://us.rd.yahoo.com/evt=34442/*http://www.yahoo.com/r/hs> |------------------------------------------------------------------ |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 Thu Jul 28 09:36:04 2005
This archive was generated by hypermail 2.1.8 : Thu Jul 28 2005 - 09:36:17 PDT