The M88RT51632 is a high-performance, 16-lane PCIe5.0/CXL 2.0 retimer used to secure the link budget to meet the challenging signal integrity requirements for long PCIe 5.0 channel comprising PCB, connector and cable. It uses advanced signal conditioning techniques to compensate for the channel attenuation and remove the impacts of various jitter sources.

Retimer 5.0 Functional Block Diagram


  • High-performance PCIe 5.0 x16 Retimer
    • 32 GT/s SerDes, capable of compensating for channel loss up to 36 dB
    • Eliminate deterministic input jitter and random input jitter
    • Support lane polarity inversion
    • Support hot plug
    • Low power and low latency
  • PCIe Standards and Compatibility
    • Compliant with PCIe 5.0 Base Specification, backward compliant with PCIe 4.0 and below
    • Support PCIe/CXL dual-mode operation
    • Support mainstream package requirements
  • Clocking
    • Use standard 100 MHz reference clock
    • Support Common Clock, SRNS and SRIS
    • Support 100 MHz reference clock output
  • Power Management
    • Support PCIe L1PM feature
    • Powered by 1.8 V and 0.9 V
  • Reliability, Availability and Maintainability
    • IEEE 1149.6 AC-JTAG Boundary Scan
    • Support Rx margining test and slave loop-back
    • Support multiple DFX features
    • Device configuration via SMBus or EEPROM

Typical Applications

  • Servers
  • Storage appliances
  • Communication equipments
  • Hardware accelerators