The E-FED is a FED emulated by a GIII board. The data are send to a SLINK board as with a real FED. The data send can be :
1. Random data (the event is descripted by 2 64-bit word (evt#, length, seed, BX...)
2. The data are preloaded inside the SDRAM (32MB) (Event included Header and Trailer
3. The data are preloaded inside the SDRAM (32MB). Header and Trailer are build by the FPGA according information received by the TTC adaptor
To upgrade or update the GIII, go here.
A document details how to program the GIII to send data.(preliminary).
I used the HAL to debug the GIII and TTCrx adaptor. (code is GIII_deb.tgz)
Event format information (see here)
Planning
| Receive PCB (TTC adaptor mounted) | PCB (week 36 2007) Components soldering( week 37 2007) | 4 examples will be mounted (2 for GIII and 2 for USB used) |
| First test -FPGA implementation | ready week 38 2007 | The GIII FPGA will be implemented with the TTC adaptor
interface 2 boards are mounted for GIII use 2 board are moiunted for USB use |
| Test started | week 39 2007 | Test start with USB, and TTCvi Evrything goes well, Im a little big blocked with the software part. I think for week 41, the first version will be available, if the software part to test is improved |
| USB TTC receiver | Will be ready for 9 October | We can read in USB bulk transfer the Lv1 received (with bunch crossing#) |
| PCI GIII USB | Should be ready for 12 October | Event send with the Lv1 received from TTC |
| first example Delivery | week 43 2007 | A board with SLINK and TTCrx will be delivered to William |
| New GIII Firmware (F77C0006) | 13th October | The previous version freeze the PC in some conditions. (see above 'To update the GIII).. |
| New GIII Firmware (F77C0007) | 14th October | Fix a problem with SDRAM access .(see above 'To update the GIII).. |
| F77C0009 | 18 December 2007 | A wait state should be initiate to do a switch between memory part used to send Events |
| F77C000A | 1 August 2008 | Add STTS decoder + thresold on warning |
| F77C000B | 18 August 2008 | Problem stuck at busy state |
| F77C000C | 22 August 2008 | Problem with the Event Header (not controlled with LFF) |
| F77C0010 | 21st January 2009 | Add a timer for trigger interval |
| F77C0018 | August 2009 | Add four words (Orbit counter ,BX, Event type) of last four events |
b. A TTC adaptor card was developed for 3 projects:
-To receive the TTC signal in the FRL FMM crates via the trigger distributor card.
-To check all the TTC signal (number of triggers, Bunch Crossing number...) during a run. This is done via a USB tester card.
-For a FED for the luminosity , via the GIII PCI card (CMS/DAQ design) See also here
c. The new FED kit
Actually, the FED designer can read their data through SLINK with a old SLINK CMC version and a different cable not compatible with which one is installed at Cessy.
To give the possibility to the FED designer to plug the FED-kit to their FED install at Cessy (without changing the SLINK CMC), we developed a new receiver card (plugged on GIII as before) which uses a cable production version.
