No I mean a package on package device. Two packages on top of each other is soldered to the PCB and both drivers/receivers are included at the same time, not like an [Model Selector]. Apperantly we do these package on package components for customers who need models of the devices. Best /Anders ________________________________ From: Syed Huq (shuq) [mailto:shuq@cisco.com] Sent: den 13 juni 2007 16:46 To: Anders Ekholm (KI/EAB); IBIS reflector Subject: RE: [IBIS] Package on package modelling. For multiple IOs in the same device... If you mean a programmable buffer, then that can be handled using the [Model Selector] keyword in IBIS. (pg29 of spec) - Syed ________________________________ From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Anders Ekholm (KI/EAB) Sent: Wednesday, June 13, 2007 3:52 AM To: IBIS reflector Subject: [IBIS] Package on package modelling. I hope I'm not repeating any dicussions, but I did not find any info in the archives. Have we had any discussions on modelling package on package devices in IBIS. That would mean modelling the package with forks And 2 or possibly more IO's in the same device. I realise that this could probably be done by using VHDL-AMS or possible verilog-AMS, but than that model would contain two or more drivers and principly one Pad IO connected to the wrapper IBIS script, how would a simulator control which of the drivers to simulate ? It might also be done by a wrapped SPICE model with the same issues how will the simulator control which IO to switch. Another resort would be go to a multi board simulation construct with two or more diffferent IBIS models, but that would be simulator dependent. How does the Open IBIS forum suggest to model and distribute a model of a package on package component from the component vendor ? Best /Anders --------------------------------------------------------------- Anders Ekholm Senior Specialist Signal Integrity CDU and DXU HW design Ericsson Product Development Unit BTS SE-164 80 Stockholm, Sweden Tel: +46 8 404 27 58 Fax: +46 8 757 23 40 email: anders.ekholm@ericsson.com --------------------------------------------------------------- -- 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 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 Wed Jun 13 07:51:35 2007
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