1. LAV firmware status Francesco Gonnella Mauro Raggi 10 th October 2012 TDAQ Working Group Meeting

2. LAV trigger generator  High and Low threshold crossing association and slewing correction  Constant offset  Event reconstruction  High and Low threshold crossing association and slewing correction  Recognition of the end of the 6.4 μs time frame (EoF)  Output data (corrected times and EoF) written on a 32-bit fifo  Error on FIFO L/H full 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy2 to TRIG FIFO From OBTRIG FIFO 64 blocks (128 FIFOs) End-of-Frame signal

3. 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy3 LAV trigger generator inside PP  Input data is read from the OBTRIG fifo;  Data is elaborated from TRIGGEN module  Output data is written to TRIG fifo

4. LAV-PP output data format  Data sent from each PP (TRIG fifo) to SL is formatted as following:  Data is composed of 2x 32-bit words, the first starting with “10”  The End of Frame is 1 word starting with “11”  For example: 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy4

5. Test with fake data on TDSPY 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy5  Fake data was written into the OB via TDSPY  The output data was read out from the TRIG fifo  Data matched the Modelsim simulations  We programmed the four PP-FPGAs with LAV specific firmware

6. Test with data from LAV FEE 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy6 Problem with TDC noise under study

7. Failure in 1/4 DDR-test The LAV trigger generator module takes a large amount of resources, so we want to be sure that its integration does not compromise the proper functioning of the whole firmware.  We tried a DDR test on the LAV PP-firmware. It resulted in error in PP0 but was successful in PP1, PP2, and PP3 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy7

8. LAV SL firmware  Event time merging and primitive generation  Merge event times from the 4 PPs  Group together events within a programmable time cluster (5 ns)  Evaluate the average of the clusters, obtaining primitive times  Sort primitive times  Produce trigger primitives according to MTP assembler format  Error on primitive lost 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy8

9. LAV primitive-merger integration on SL 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy9 We are ready to integrate LAV SL-firmware in order to test it on the TEL62.

10. Conclusions  Status:  We have a working version of the PP firmware performing High and Low threshold-crossing association and slewing correction  PP LAV-specific firmware has been successfully integrated into common firmware  Tests have been performed successfully on TEL62  We have a working version of the SL firmware ready to be integrated  Works at 160 MHz frequency with reasonable (10%) resource utilization  Can handle up to 32 trigger primitives with a fixed latency of about 1.3 μs  Things to do:  Integrate LAV firmware into SL common firmware  Test the complete LAV-specific firmware (PP and SL) 10 October 2012Francesco Gonnella - I.N.F.N. - Laboratori Nazionali di Frascati - Italy10

11. Thank you for your attention 10 October 2012 11