3 rd xTCA IG meetingVincent Bobillier et al. 1 MMC mezzanine

3 rd xTCA IG meetingVincent Bobillier et al. 2 MMC mezzanine Outline MMC role Development history and motivations Example of implementation Software Additional information

3 rd xTCA IG meetingVincent Bobillier et al. 3 MMC role Manage hot swap sequence Board asset information − Manufacturer, − Product name, − Model number, − Serial number, − Geographical information, − Version, − Features, −... Monitor functions − Board and components temperature, − Voltage levels, − … Relies on IPMI (Intelligent Platform Management Interface) communication standard MMC mezzanine

3 rd xTCA IG meetingVincent Bobillier et al. 4 Development history and motivations CPPM: Developed our own design because − Few commercial solutions − All proprietary and single source − Or expensive IPs Use of a mezzanine to: − Save room on AMC board − Speed-up development Received valuable help from DESY who already designed such a functionality. (Thanks to Kay Rehlich and Vahan Petrosyan) CERN: To participate in the project finalization (mainly S/W). To centrally produce, distribute and give support for both H/W and S/W Pigeon Point Reference designs (IPs) MMC mezzanine

3 rd xTCA IG meetingVincent Bobillier et al. 5 MMC mezzanine Development history and motivations (continuing) From version 2: 2 links missing (miswired). Schematic had to be corrected. Chosen connector (Samtec ERM/ERF8) was not very well adapted (no latching). Replaced by Samtec SS4/ST4. Oscillator too high for the use of the latched version of the SS4/ST4. AVR’s internal oscillator is used. PCB size can be reduced from: 20x39 to 20.5x28.5 mm From version 3: New connector latches not found to be robust enough so a fixation hole (for the use of a locking post) is added in the pcb. Final version: 3.1 Version 2 Version 3.1 Version 3

3 rd xTCA IG meetingVincent Bobillier et al. 6 MMC mezzanine Example of implementation LHCb Muon trigger system

3 rd xTCA IG meetingVincent Bobillier et al. 7 MMC mezzanine Software Basic code originally developed by DESY, then modified by CPPM Code is now in a SVN repository at CERN To-do list: Review of the code Remove unused code, improve coding style, add documentation, etc. Find and fix bugs Separate common S/W code from user specific/defined code DESY and CPPM are kept in the loop Add RTM and JTAG support DESY has contributed the basic function CERN will hook them up to the main program Add missing features (?) The Polaris AMC tester has flagged a lot of thing How much effort do we want to invest?

3 rd xTCA IG meetingVincent Bobillier et al. 8 MMC mezzanine Additional information Technical specification: uTCAEvaluationProject/MMC_project/Shared%20Documents/MMC%20mezzanine/Specification/MMC_s pecification_v3.0.pdf Required by the users (for all user specific code): AVR studio 4 programming platform ( AVR programmer (~ US$, Availability H/W (MMC v3.1) is available now (20+ units produced). However, S/W is work in progress... Estimated price (per piece): CHF If interested please contact me by