IBIS Macromodel Task Group Meeting date: 13 August 2013 Members (asterisk for those attending): Agilent: * Fangyi Rao * Radek Biernacki Altera: David Banas Julia Liu Hazlina Ramly Andrew Joy Consulting: Andy Joy ANSYS: Samuel Mertens * Dan Dvorscak * Curtis Clark Steve Pytel Luis Armenta Arrow Electronics: Ian Dodd Cadence Design Systems: Terry Jernberg * Ambrish Varma Feras Al-Hawari Brad Brim Kumar Keshavan Ken Willis Cavium Networks: Johann Nittmann Celsionix: Kellee Crisafulli Cisco Systems: Ashwin Vasudevan Syed Huq Ericsson: Anders Ekholm IBM: Greg Edlund Intel: Michael Mirmak Maxim Integrated Products: Mahbubul Bari Hassan Rafat Ron Olisar Mentor Graphics: * John Angulo Zhen Mu * Arpad Muranyi Vladimir Dmitriev-Zdorov Micron Technology: Randy Wolff Justin Butterfield NetLogic Microsystems: Ryan Couts Nokia-Siemens Networks: Eckhard Lenski QLogic Corp. James Zhou SiSoft: * Walter Katz * Todd Westerhoff Doug Burns * Mike LaBonte Snowbush IP: Marcus Van Ierssel ST Micro: Syed Sadeghi Teraspeed Consulting Group: Scott McMorrow * Bob Ross TI: Casey Morrison Alfred Chong Vitesse Semiconductor: Eric Sweetman Xilinx: Mustansir Fanaswalla Ray Anderson The meeting was led by Arpad Muranyi ------------------------------------------------------------------------ Opens: - None -------------------------- Call for patent disclosure: - None ------------- Review of ARs: - Fangyi send updated BIRD 155.1 draft to Mike for posting. - Done ------------- New Discussion: Interconnect Task Group report: Arpad noted that there will be an interconnect meeting tomorrow, not editorial. Walter was hoping to discuss BIRD 125. Arpad asked if BIRD 145 should be discussed in Tuesday meetings. BIRD 125 will still be discussed on Wednesdays. New Executable model change: Arpad showed the IBIS 5.1 spec section 10.1. He asked if it should be changed to say that DLLs now have 5 functions. Walter, Radek and Fangyi agreed. There will be two more cases describing function combinations. Although AMI_Resolve_Close is required if AMI_Resolve is present the list of functions always required should have only Init and Close. Arpad said a BIRD should be written. Bob noted it is section 10A in IBIS 5.1 but section 10.3 in IBIS 6.0. Walter said it can not go into 6.0 so we should wait for 6.0. Fangyi offered to write the BIRD. BIRD 155: Bob said the IBIS 6.0 tables describing reserved parameters should list Usage Dep. Arpad showed BIRD 155.1. Walter said any parameter that can be Info or Out can be Dep, agreeing with Bob. Radek said the BIRD should cover the table modifications. Walter said that was editorial in nature, does not have to be in the BIRD. Bob felt the BIRD should state at least the rule for this. Radek suggested language to express this. Bob said the Out column in the spec tables might become Out/Dep to save space. The list of parameters that can be Dep will be replaced with these rules. Arpad noted he would like to have a vote on this next week. Bob wondered if the IBIS 6.0 spec should have a new section for reserved parameters. Arpad preferred to focus on technical questions. AR: Fangyi send updated BIRD 155.1 draft to Mike for posting. BIRD 150: Arpad said we had talked about having a vote on this with the intention of rejecting it. BIRD 147: Arpad suggested that Ambrish might make 6.0 changes to BIRD 147 similar to those that will be made to BIRD 155. Ambrish asked to have more discussion on this BIRD. Arpad asked if much change is required to rework the BIRD for 6.0. Ambrish agreed. Arpad suggested voting on this soon. BIRD 128: Radek felt this this does not propose a clean method. He noted that Mohammad Bapi had offered to work on this, but that may not happen soon. Arpad agreed that it was not good to change the operation of an existing function argument, and hoped to hear more about Bapi's ideas. Ambrish said we should not change the API lightly. AR: Mike contact Bapi to start discussion of BIRD 128 with Arpad Eye mask definition: Arpad asked if there was interest in this still. Ambrish felt it would not be very useful. Mike said that both eye mask definitions and associations between signals and definitions are required, but only the latter was a good fit for IBIS. Todd said we have done little work on how the eye diagram is used to check results. Arpad said that receiver sensitivity produces a reasonable solution. Arpad said this topic would be dropped until someone else raises it. BIRD 157: Arpad asked to resume discussion of this. Bob said it might be hard for the parser to check this. Arpad noted that this was first discussed about 15 years ago. Bob suggested a whole new IBIS spec might be needed to address this. ------------- Next meeting: 20 August 2013 12:00pm PT ------------- IBIS Interconnect SPICE Wish List: 1) Simulator directives