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Home » Applications » Cable Extender Cards

Cable Extender Cards

Home » Applications » Cable Extender Cards

Cable Extender Cards

Enabling Out-of-the-Box PCIe® Expansion​

Cable Extender Cards System Block Diagram

RT = Retimer

Requirements & Challenges

  • Connectors on the cable extender card form a x16 link to a single JBoG/JBoF, or multiple smaller link widths to different destinations (as shown)
  • Cable, connector, and total board losses on both sides of the link make retiming a requirement for PCIe® 4.0 and PCIe 5.0 implementations
  • Providing copies of REFCLK across each cable adds EMI challenges and additional cost​

Aries Retimer Benefits

  • Supports separate reference clock to accommodate out-of-box PCIe interconnect​ without needing to send REFCLK across the cable
  • Retimers can be cascaded for cases with very long cables or large / difficult tray layouts (retimers located both on server and JBoF/JBoG)​
  • Deep diagnostic features supported in BMC-qualified SDK​

Products

Product

Documents

Description

Max PCIe Gen

PCIe Lanes

Ordering

Aries Smart Retimers
  Product Brief
Astera Labs PCIe® 4.0, PCIe 5.0, and CXL™ x16 and x8 Low-Latency Smart Retimers

PCIe 5.0

x 8
x 16

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