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White Paper: Compact Serial versus VPX The F75P is a COTS railway computer with onboard functional safety that unites three Intel Atom E6xx/E600 processors on a single 3U CompactPCI PlusIO card.

F75P - 3U CompactPCI® PlusIO Safe Railway Computer

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F75P with RJ45 connectors

Larger picture of F75P with RJ45 connectors

F75P Diagram

Larger picture of F75P Diagram

Main Features
  • 2x Intel® Atom™ E6xx, 512 MB DDR2 RAM (each) for onboard dual redundancy
  • 1x Intel® Atom™ E6xx, 1 GB DDR2 for I/O
  • Independent supervisors for each block
  • Fail-safe and fail-silent board architecture
  • Clustering of two F75P to raise availability
  • Event logging
  • Certifiable up to SIL 4 (with report from TV SD)
  • SIL 4 certification packages available for hardware and software (QNX®)
  • Developed according to EN 50129, EN 50128 and IEC 61508
  • Full EN 50155 compliance
  • -40 to +85C qualified
  • Conformal coating
Description Open

The F75P is a COTS safe computer with onboard functional safety that unites three CPUs on one 3U CompactPCI® PlusIO card. It makes Intel® Atom™ E6xx ("E600") performance with dual redundancy extremely compact, mainly targeting railway applications. Two independent Control Processors (CP) with independent DDR2 RAM and Flash and a supervision structure provide safety: with redundant software running on F75P, and, e.g., with the software instances on the two CPs comparing their output, the board becomes a fail-silent subsystem, i.e. it can shut down in case of a fatal fault.


Technical Data Open

CPU Architecture

Three onboard processors
Two Control Processors (CP)
One I/O Processor (IOP)
Inter-communication between all three processors via onboard Ethernet or Shared RAM


Options Open


Intel® Atom™ E620T, 0.6 GHz, 320 MHz graphics frequency, 3.3 W TDP (estimated)


Standard Configurations
Article No. CPU Type System RAM Ethernet connectors Front Panel Conformal Coating Operating Temperature
02F075P00 3x E680T, 1.6 GHz CPs: 512 MB each, IOP: 1 GB RJ45 4 HP Yes -40..+50C qualified
02F075P01 3x E680T, 1.6 GHz CPs: 512 MB each, IOP: 1 GB M12 (right) 8 HP Yes -40..+85C qualified
Standard F75P Models Open
Related Hardware Open
Memory Open
Certification Packages Open
Systems & Card Cages Open
Software Open
Documentation Open
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