EKF - Short Profile
EKF - Short Profile


CompactPCI® Serial

PCI Express® External Cabling • PCIex4 Host Adapter

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Ordered List
Product Information
Block Diagram

Application Examples
Vision Systems

CPCI-S on Trains

PCI Express auf Schienen

General Information
CPCI Serial Concept

SX2-SLIDE • PCI Express® External Cabling • Host System Adapter (click for large image in secondary window or tab)
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CompactPCI® Serial • PCI Express® External Cabling
Host Side Adapter • Dual PCIe x4 Cable Connectors

Most computer systems are based on the PCI Express® standard as a high speed backbone for interconnection of peripheral components with a host CPU. Typically all PCI Express® based devices are located closely in a common enclosure.

The PCI-SIG PCI Express® External Cabling Specification addresses extended applications, such as split-systems or I/O expansion by means of a suitable copper cable, available e.g. for a x4 PCI Express® link, up to 7m length. When used with an AOC (Active Optical Cable), distances of up to 300m can be bridged between host and target systems.

The SX2-SLIDE is a CompactPCI® Serial host adapter card for PCIe x4 external cabling. The board is provided with two PCIex4 front panel connectors, for attachment of one ore two remote target systems via PCI Express® x4 links. The SX2-SLIDE has been designed for operation in a CompactPCI® Serial fat pipe slot (PCIe x8), but will also work in standard peripheral slot (PCIe x4 preferred). The on-board PCIe packet switch splits the upstream link (x8 or x4) into two equal downstream links (x4), each delivering up to 20Gbps to an associated target system. Dual clocking is provided on the SX2-SLIDE, which allows usage of CFC cables (such as AOC) in a SSC host system.



The SX2-SLIDE allows to control a remote PCI Express® based target (downstream) system by a CompactPCI® Serial host CPU via PCI Express® external cabling. The target system may be any PCI Express® based hardware with an external cabling adapter, not necessarily a CompactPCI® Serial system.

By means of the SX2-SLIDE, a CompactPCI® Serial system backplane, with respect to its PCI Express® resources, can be virtually extended. Hence, PCI Express® based devices in a remote target system can be controlled by the CompactPCI® Serial host system CPU in an identical manner as its local resources.

SX2-SLIDE - Typical Application

SX2-SLIDE - Typical Application

Feature Summary

  • PCI Express® external cabling host side adapter
  • PICMG® CompactPCI® Serial (CPCI-S.0) fat pipe slot (x8) or peripheral slot (x4) recommended
  • Single Size Eurocard 3U 100x160mm2, front panel width 4HP
  • cPCI-S Backplane connectors P1, P2 for x4 or x8 PCI Express® lanes

  • PCI Express® External Cabling Specification Revision 2.0
  • Two connectors PCIe x4 38-pos. (front panel), iPass™ (Molex)
  • Two target systems or devices can be attached simultaneously
  • Suitable for remote target systems to be controlled by a CompactPCI® Serial host
  • Connects to any PCIe based target system with PCI Express® x4 external cabling adapter
  • Copper cable assemblies 0.5m to 7m length available
  • Active optical cable assemblies (AOC) up to 300m length available (Samtec)
  • PCIe Gen2 x4 allows for up to 20Gbps aggregated bandwidth

Special Features
  • Gen2 PCI Express® 16-lanes packet switch on-board
  • Dual clocking for separation from host system spread spectrum clock (SSC) domain
  • Cable ports are constant frequency clock (CFC) based, as required for active optical cables (AOC)

  • For lowest latency at fastest speed connected systems
  • Distributed computing - host to target system hierarchy
  • Peer to peer computing - special TCP/IP stack (Dolphin) available
  • Split-systems, hybrid systems, or system expansion applications
  • Direct host to target device connection (e.g. PCIe based remote NVMe mass storage)
  • Vision systems with high resolution cameras directly attached

  • Designed & manufactured in Germany
  • ISO 9001 certified quality management
  • Long term availability
  • Rugged solution (coating, sealing, underfilling on request)
  • RoHS compliant
  • Commercial and industrial temperature range
  • Humidity 5% ... 95% RH non condensing
  • Altitude -300m ... +3000m
  • Shock 15g 0.33ms, 6g 6ms
  • Vibration 1g 5-2000Hz
  • MTBF 75.5 years
  • EC Regulations EN55022, EN55024, EN60950-1 (UL60950-1/IEC60950-1)

SX2-SLIDE - Simplified Block Diagram

SX2-SLIDE - Simplified Block Diagram

SX2-SLIDE - PCIe External Cabling Host Adapter


Application Example w. SX2-SLIDE - High Performance Vision System

Application Example w. SX2-SLIDE - High Performance Vision System

Ordering Information
Please refer to List 21 for popular SKU
EKF is an ISO-9001 certified company
EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 Hamm • Germany
Phone +49 (0)2381/6890-0 • Fax +49 (0)2381/6890-90 • E-Mail