CompactPCI® Serial PCI Express® External Cabling • Host Side Adapter • Dual Port PCIe Gen3 x8 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 for Gen1 and Gen2 data transfer rates addresses extended applications, such as split-systems or I/O expansion by means of a suitable copper cable, available e.g. for a x8 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. Beyond the PCI-SIG cabling specification, the Samtec PCIEO series of AOC addresses also Gen3 speed up to 100m.
The SX5-STREAM is a CompactPCI® Serial host adapter card for dual PCI Express® x8 external cabling. The board is provided with two PCIe® x8 front panel connectors, for attachment of one ore two remote (target) systems via PCI Express® x8 links. The SX5-STREAM has been designed for operation in a CompactPCI® Serial fat pipe slot (PCIe® x8). The on-board Gen3 PCI Express® packet switch splits the upstream link into two concurrent PCI Express® downstream links x8, each delivering up to 64Gbps to an associated target system. The advantages of PCI Express® as an communication path compared e.g. to 10Gbps Ethernet are higher data transfer speed at lower latency, and primarily merging distributed subsystems virtually into a single PCI Express® based computer assembly.
The SX5-STREAM 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 SX5-STREAM, 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.

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Application Notes

General Information

Ordering Information

  • PCIe Gen3 external cabling host system adapter
  • dual F/P connectors PCIe x 8


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

Simplified Block Diagram

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