Blue Flower

S-LINK Products

FILAR v.1.1

Four Input Links for ATLAS Readout


FILAR is a standard S-LINK read-out card designed for use in the data acquisition (DAQ) system of the ATLAS experiment.

However, it is a standard interface and can be used in any DAQ-s.

It receives data from four HOLA S-LINK channels and writes it (with DMA) to the computer memory via the PCI-X bus.


  • 2.0 Gb/s optical data transmission
  • Complies with CERN proprietary S-LINK interface standard
  • 4 integrated HOLA destination input links with simplex 32-bit data path and flow control
  • 160 MB/s maximum sustained bandwidth per channel
  • 528 MB/s maximum data throughput
  • Interrupt generation selectable on reception of one or several data blocks

S-LINK Features

  • Instant-on, (automatic link synchronization and management)
  • Bit error rate << 10-12, CRC check on data blocks


  • User replaceable Small Form Factor Pluggable (SFP) optical transceivers
  • Duplex LC optical connector
  • 66 MHz, 64-bit, 3.3 V PCI-X interface
  • Compatible with: HOLA