Transcript Simulation of high speed serial interconnection - Indico

Simulation of high speed serial
interconnection
(report from PH/ESE first discussion
about high speed serial link
simulations)
J. Christiansen, S. Baron
EUG - 4/7/2016
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Vital expertise for experiments’
upgrades
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Serial links from front-end chips to GBT (or alike)
– 40 – 320/640 Mbits/s (or higher ?)
– Electrical distance: 10cm to 1 – 2 m (pre-emphasis and filters)
– Low mass / low power (low current/voltage) / low noise / Low BER/ Low failure rate/ low ?
– SEE
Optical FE links (Versatile/GBT)
– 5 – 10 Gbits/s
– Short distance electrical: 1 - 10 cm.
– Long distance electrical if deported optoelectronics: 1 – 2 m ! (pre-emphasis and filters)
– SEE
Communication between FPGA's on same board.
– 1 – 10G
– 1 – 30cm
Communication between boards via backplanes/cables (trigger, TCA, etc.)
– 1 – 10G
– 10cm – 100cm
– Connectors
– Pre-emphasis, filters, etc.
DAQ interface links.
– 10G – 100G commercial
TTC optical links.
– Compatible to GBT but no SEE problem
Etc.
J. Christiansen, S. Baron
EUG - 4/7/2016
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Tools
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What we need: A tool to make PCB and sub-structure simulation:
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Tools available at CERN
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Pre-Layout analysis (use of models, S-parameters, BER simulation, eye diagram)
Post-Layout verification (EMC hot spots on entire PCB, crosstalk, timing..)
2-D, 3-D field solvers
Ansoft Maxwell 2D and 3D
CST Microwave Studio (3D EM field solver)
Allegro AMS (former P-Spice, circuit simulation)
Do we have Cadence PCB SI/PI or any other PCB simulation tool?
Latest experience within our group: few years ago with SpectraQuest and Maxwell, recent
with CST
Some of us have briefly played with some other tools
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Agilent ADS
Mentor Hyperlynx
Ansoft HFSS, AWR Microwave Office
Partners using Stateye (public domain)
J. Christiansen, S. Baron
EUG - 4/7/2016
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PH/ESE plans
• PH/ESE working group being set-up to:
– Identify a common set of tools we will use for the
group and on which we will get expertise (if possible
within the CERN tool kit, of course)
– Organize the interface with EN-ICE on the specific
subjects of high-speed transmission links:
• layout rules and simulation
• PCB library (vias, material, ..)
• PCB QA
– Try to identify the companies able to build boards and
prototypes according to the rules previously set
J. Christiansen, S. Baron
EUG - 4/7/2016
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