PCIe Gen 4.0 Retimer


  • PCIe 1.0, 2.0, 3.0 and 4.0 support
  • 32 bi-directional PCIe lanes – 16 lanes up and 16 lanes down
  • Industry’s best SerDes technology with extended reach (up to 39 dB loss)
  • Low-power SerDes (under 90 mW per Lane)

PEX88T32 is a PCIe Gen 4.0 Retimer with 32 bi-directional PCIe lanes and the industry’s best SerDes technology with extended reach. Broadcom has taken an innovative path by re-purposing its PCIe Gen 4.0 Switch to create a retimer, the PEX88T32, to fill this market need. The PEX88T32 offers a total of 32 bi-directional PCIe Gen 4.0 lanes where one x16 PCIe port can connect to a host and other x16 port to an I/O device, cable connector or mid-plane. The PEX88T32 retimer uses the same field-tested chip architecture and robust long-reach SerDes as PEX88000 PCIe Gen 4.0 Switch family.


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  • SerDes technology with extended reach up to 39 dB loss
    • SerDes field-tested by Broadcom in various products
  • Configurable with SBR
  • Cut-through packet latency of 105 ns
  • DPC/eDPC support, Read tracking for surprise removal
  • SSC isolation, SRIS, SRNS, and Common Clock support
  • Each lane is independent of other lanes
  • No reference resistors, NV RAM is programmed during test
  • CTLE, 9-tap DFE equalizer to support up to 39 dB channel loss
  • CDR, pre/post-cursor settings
  • Lane margining and loop-back supported
  • Exceeds 20 dB normal channel loss handling set by PCI-SIG
  • Handles 39 dB (spec = 28 dB) loss with the clean channel (5 to 11 dB margin)
  • 800 mV PRBS-23 BERT + 28 dB CEM Channel + Package Loss
  • Field-proven debug and bring-up tools
  • IBIS-AMI Models, Arctic SerDes Eyescope and other debug tools
  • Reliability, availability, serviceability VisionPAK - SerDes Eye capture
  • Very high jitter and interference tolerance (100% over PCIe spec)
  • Exceeds 20 dB normal channel loss handling set by PCI-SIG
  • High Performance Computers
  • Camera and Video Applications
  • Rugged Embedded Systems
  • Data Acquisition and Processing
  • Head-Up Displays (HUD)
  • Communication Modules
  • Networking Cards
  • Custom Servers
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