1 20/02/12 SRS News SRU Revision, New Hybrids, DTC, Firmware, … Sorin Martoiu, CERN PH/DT SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

2 20/02/12 Outline SRU revision 2 (PCB produced, assembly) New Hybrids  New APV Hybrids produced (micro HDMI connector)  VFAT2 and BEETLE hybrids under design SRS Firmware Evolution  New features for near-future upgrades New APV firmware options (Zero-suppression code) Design of the DTC link  LVDS channel tests Towards an industrial SRS design SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

3 20/02/12 SRU rev2 SRU revision 1 features: 4 x SFP+ (GbE, ALICE DDL, ATLAS S-Link, …) SO-DIMM DDR3 (2GB) TTC Remote configuration (BPI Flash) SRU revision 2 upgrades: 10 GbE PHY 3 x SFP+ (up to 5 Gbps each) Jitter-cleaner PLL for TTCrx clock ( < 50 ps peak-to-peak jitter) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

4 20/02/12 SRU rev2 New 10GbE PHYNew PLL (TTC CLK) 3 x SFP+ 10 GbE DDR3 SODIMM Virtex 6 FPGA SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

5 20/02/12 New Hybrids New APV Hybrid VFAT2 Hybrid BEETLE Hybrid New Micro HDMI connector SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting Initial production yield < 90% Some simple assembly issues and some test samples included in the yield. Final result may improve

6 20/02/12 New Hybrids New APV Hybrid VFAT2 Hybrid BEETLE Hybrid 2 hybrid versions (with or without discharge protection) Power via detector PCB (option) Signals via detector PCB (option for the short version only) One hybrid per HDMI cable Work in progress (layout finalization) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

7 20/02/12 New Hybrids New APV Hybrid VFAT2 Hybrid BEETLE Hybrid Under design at Weizmann Institute, Israel Comparator output OR/MUX via radtol CPLD Master-slave versions for analog readout mode Work in progress (layout finalization) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

8 20/02/12 Firmware Evolution Test modules  Used for QA tests in manufacture process DTC Link  Protocol definition Synch Module (clock synchronization of multiple FEC cards)  On-board clock (free running)  DTC clock (SRU clock)  Ethernet clock (TX clock of the Network Switch) Design Partitioning (Xilinx tool migration)  Easy integration of new applications/front-ends  Partial reconfiguration of the application module (limited support for Virtex 5 family) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

9 20/02/12 Firmware Evolution Ethernet Core DTC Link Clock Unit Test & Init SC Core Data path SC BUS Monitoring System SC App Slow Control Readout Control FE Card Interface Data Processor Packet Builder EEPROM oCoCVoltage Current Application Layer (Reconfigurable partition*) System Layer (Fixed partition) * Xilinx dynamic reconfiguration support is limited for Virtex 5 FPGAs On-board clock DTC clock Ethernet clock DAQ FE SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

10 20/02/12 APV Signal Processor Event Build - Frame Decode - Pedestal Corr. - Zero Suppress kB/ch BYPASS Additional Features: Clock phase calibration Pedestal and noise calibration Double input buffer (samples < 15) Common-mode channel (future) Warnings: Due to resource limitations the (old) raw ADC mode and Zero-suppression mode cannot be implemented in a single firmware version. A single channel bypass mode is provided Common mode rejection not implemented. A common- mode channel output is foreseen for later revision 50kB Designed by Raffaele Giordano, INFN Napoli SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

11 20/02/12 Clock phase calibration Wrong clock-edge sampling; resync using the on-hybrid PLL25 chip SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

12 20/02/12 APV Frame Decoder sync pulsesheaders Analogue data (128 channel samples) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

13 20/02/12 APV Zero Suppression Analogue data (128 channel samples) Pedestal correction Zero suppression (integral discrimination) Thresholds are automatically calculated from noise data User can read or write pedestal and noise data via slow-controls SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

14 20/02/12 DTC Links Physical Interface LVDS buffers (< 2 Gbps, no signal conditioning) CAT 5E/6/7 FTP SRU 40 x DTC links 2 x LVDS TX (clock, trigger, control) 2 x LVDS RX (data, trigger, control) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

15 20/02/12 DTC LVDS Link Tests 100 MHz DDR PRBS pattern (400Mbps) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

16 20/02/12 DTC LVDS Tests (Preliminary) Cable Length Cable TypeMax Speed 1 Raw Bandwidth Data Bandwidth (20% protocol overhead) 2.5 mCAT-5E UTP700 MHz Gbps2.24 Gbps mCAT-5E FTP460 MHz1.84 Gbps1.47 Gbps mCAT-6 UTP300 MHz Gbps0.96 Gbps 26 mCAT-7 FTP200 MHz0.80 Gbps0.64 Gbps 1 Only one FEC card tested. Results may be different for a representative population; 2 FPGA design limit 3 Failed at 280 MHz. Safe value 260 MHz (1.04 Gbps; 0.8 Gbps effective)  50 m DTC link not feasible  Signal conditioners might be an option  Data bandwidth higher than expected at moderate cable length ( > 1 Gbps) SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

17 20/02/12 DTC Protocol Proposal Channel interleaving  Trigger, busy, … transmitted with high priority and guarantied fixed latency.  Data transmitted over regular (low priority) channel. 8b/10b encoding  DC balance (improves channel performance)  Error detection  “Out-of-band” signaling (comma characters – synchronization, framing control, …)  20% overhead Versatile Design (Auto-negotiation, full control of slave DTC via SRU) 8b/10b Framing Control 10b/8b Frame detection Latency correction commas ctrl High priority ch. Trigger/Busy/… Low priority ch. Data/Control DTC TXDTC RX Ch. request Flow control SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

18 20/02/12 DTC Protocol Proposal SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

19 20/02/12 SRS in Industrial Standard Discussions with EICSYS GmbH (Hamburg) studying the possibility to develop SRS systems in industrial standards (ATCA, mTCA,..) Full industrial certification (CE, mechanical, EMI, …) Runtime reliability (>99.9% uptime) System Management AdvancedTCA

20 20/02/12 Thank you! SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

21 20/02/12 Additional Slides SRS News, Sorin Martoiu, CERN 2012, 9th RD51 Collaboratin Meeting

22 20/02/12 typedef unsigned char BYTE; // 8-bit word typedef unsigned int WORD32; // 32-bit word typedef unsigned short int WORD16; // 16-bit word typedef signed short int INT16; // 16-bit signed int struct APV_HEADER { BYTE APV_ID; // APV Identifier number on the FEC card (0 to 15) BYTE N_CHANNELS; // the number of channels which will be following the header BYTE N_SAMPLES; // the number of samples per channel BYTE ZS_ERROR; // Error code from the Zero Suppression Block, meaning have to be defined WORD16 FLAGS; // bit 0 : ‘0’ – Classic zero suppression, ‘1’ – Zero suppression with peak finding // bits 1 to 15 are still reserved for future use WORD32 RESERVED; // 32 bits reserved for future use }; struct CHAN_INFO { BYTE RESERVED; // 8-bits reserved for future use BYTE CHAN_ID; // Channel identifier, // APV physical channels are 0 to 127, // 128 could be used for the common mode average // 129 for error codes from the APV (pipeline address(8 bits) & error bit) INT16 CHANDATA[N_SAMPLES]; // 16 bit words, actual data will be 13-bits wide }; SRS ZS Data Format Author: Raffaele Giordano Ver Jan Data types and structures definition

23 20/02/12 APV Header CHAN_INFO N_CHANNELS CHAN_INFO structures At each read-out from the ZS buffer for a given APV, the ZS will answer with this sequence. 1.In classic zero suppression mode, the CHANDATA array contains the actual samples. 2.In peak finding mode, the CHANDATA array has always two elements: CHANDATA[0] = peak value CHANDATA[1] = peak time Read-out Sequence Author: Raffaele Giordano Ver Jan. 2012