Meeting date: 18 apr 2006 Members (asterisk for those attending): *Arpad Muranyi, *Bob Ross, *Todd Westerhoff, *Mike LaBonte, Paul Fernando, Barry Katz, *Walter Katz, Ken Willis, *Ian Dodd *Lance Wang *Richard Ward Doug White *Sanjeev Gupta ------------- Review of ARs: none ------------- Welcome to Sanjeev Gupta from Agilent: - ADS has a good system for modeling SerDes channels. - Todd would like to have a simulator-independent version of it. - Agilent trying to move away from encryption. To be or not to be - continued: - Example of a difficult problem: Self-calibrating buffers - Trying to model the maximum calibration error. - This can't be done in IBIS at the moment, but it can with Matlab/AMS. - Richard not sure if macro-model performance will be good enough. - Difficult to put non-linearities like compression into AMS. - Simulation will be faster if linear. - It is important to correlate with silicon. - End user requirements: - Mix and match silicon and behavioral models - A non-proprietary solution is needed, not single-vendor. - Building blocks that relate to silicon structures - Original Telian-based macro-model vision was for buffers - Now we are looking at system behavior - Now we want to do design stage what-ifs - How to extract data from silicon for more complex model structures? - no cookbook - Current AMS function library is immature - Example: easy to do an FIR filter in Matlab - More difficult to do in AMS - Richard: verilog AMS has one - Again, do we need SPICE compatibility? - Gary Pratt has 2 people coding AMS models - PLL filters tend to have to be recoded moving from one vendor to another - Standards like 802.3AP: can we get groups to produce reference models in AMS? - Like having the industry create macros - Better off having building blocks, even if they have to be customized for each use. - May be able to parameterize them most of the time - We don't have to discard our work so far - We really need to keep looking at simulator compatibility issues Will IBIS 4.1 offer encryption? - Proprietary solutions have to be encrypted for each tool - IBIS committee could get in the encryption business - Could use something like PGP - Difficult to keep the private key private among multiple vendors - This is an important issue, although we would prefer unencrypted models - Encryption should be restricted to the parts that need it - We could define IBIS BEGIN/END encryption keywords, but not the algorithms. Further discussion of future direction in the final minutes of the call: - We should restate our goals and prioritize in the next teleconference. - We need to get simulation companies to weigh in here. - We are going from phase 1 to phase 2. - Some vendors may be left behind. ------------- Next meeting: Tuesday 25 apr 2006 12:00pm PT