New LUMAT board

Fabio Giannuzzi - Filippo Giorgi – Mauro Villa

Bologna

Lucid meeting – 10th December 2013

Key points• Main goals

– Build new system on solid ground– Same algorithms, same functionalities

• Basic idea:– Duplicate ROD data and send them to a new

LUMAT– Same LUMAT main board– Update only the input mezzanines

• From mezzanine with 24+24 LVDs inputs to optical link mezzanines

• Provide ROD – Mezzanine protocols for lumi measurement 2

New LUMAT Board

• “Minimal changes”• (V2 Edro - ZDC)• “FTK“ input mezzanine

• HW tests to be done systematically

Rod A

Rod C

• New Lumat board• FTK mezzanines• LUCROD prototype– In sharing with other

activities.

Hardware under test in lab

Development plan• Ensure fixed latency serial communication over fibers

– Decide protocol to use Done– FTK mezzanine to FTK communication (Xilinx-Xilinx) Done– LUCROD to FTK communication (Altera-Xilinx)

Ongoing– FTK-to-FTK beam simulation Ongoing

• Development of FTK algo firmware Planned• Update of Stratix firmware to be started• Software integration to be started

• Need fixed requirement:– If you would like to add/change something, please say/write it

down now!

LUCROD-LUMAT Communication

LUCROD to LUMAT:•16 (PMT)+4(fibers) hit bits/BCID (clock tick)•Orbit Signal (marks the BCID=0 in the stream)•Data Valid/Live info•2 spare signals (handshake, lumi block transition)•Control words (parity and others) in the S-link protocol

LUMAT to ROD•Nothing (in principle); could be something like handshake, live info…

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Total: 24 bits

FTK-to-FTK serial tests

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Tests done using the same FPGA or 2 different FPGA with the same reference clock (40 MHz) but different transmission clocks

Full realistic chain on TX and RX side:TX: 32 bit @ 40 MHz -> dual clock FIFO-> 50 MHz rd clk

-> 16 bit data sent at 100 MHz with alignment wordsRX: received data at 100MHz, removed alignment words ->

32 bit data at 50 MHz -> dual clock FIFO 32 bit @ 40 MHz

No loss of sync; no loss of data.

• The SFP oscillator is not programmable yet– Minor issue: we can change the oscillator, but it will take

some time deferred– LUCROD prototype receives data on the optical link but it

does not send them out investigating

• Manpower is short and over-committed- for many reasons: so do not ask too many changes!

Known problems at the moment

Summary

• New LUMAT Card and LUCROD prototype already in our hands– Hardware tests yet to be done systematically– Firmware in the writing phase

• LUCROD-LUMAT serial protocol: – Protocol decided; in the implementation phase

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