PS8926A – PCI Express Gen 4 16Gbps 16-Lane Retimer

The PS8926A is a bidirectional, 16-lane retimer (using a total of 32 data channels) that supports PCIe (PCI Express) Gen 4, with data rates up to 16Gbps.  It is low-latency capable and is ideal for applications incorporating high lane count PCIe bus widths such as workstations and enterprise data center systems including storage and servers. In addition to the features offered with the PS8926, the PS8926A also includes an internal temperature sensor.

As a retimer, the PS8926A removes unwanted and potentially error-inducing signal distortion introduced by cross-talk or system noise, or from physical interface loss including PCIe interconnect cables, PCB traces, and connectors.  The device enhances data transmission reliability and enables longer PCIe interconnect cables and/or PCB traces, enabling system scalability.

Key Features

  • PCI Express 4.0 spec compliant retimer
  • Supports PCI Express operation at 2.5Gbps, 5Gbps, 8 Gbps and 16Gbps
  • Supports 16 bidirectional lanes using 32 differential channels
  • Low power consumption
  • Adaptive CTLE and DFE equalizers compensate up to 30dB channel loss at 8GHz
  • Three configurable modes of operation
    • FPR – Full Protocol Retimer
    • LLM, Intel’s Low Latency Mode
    • PABR – Protocol Aware Bit-level Retimer
  • Near Zero Latency; 2ns typical at Low Latency Mode (LLM) and PABR mode
  • Per-channel voltage and timing margining
  • Supports dynamic link bifurcation
  • Autonomous dynamic link bifurcation
  • Built-in temperature sensor
  • Supports SRIS/SRNS systems
  • Supports lane reversal and hot plug
  • Supports SMBus configuration and external EEPROM configuration loading
  • 16 selectable addresses for SMBus control
  • Supports power saving states; L1 (standby) and L1PM (sleep)
  • Supports JTAG debug port; Follows IEEE 1149.1 & IEEE 1149.6
  • 0.9V and 1.8V power supplies
  • 8.9mm x 22.8mm 354-ball BGA package
  • -40 to +85 deg. C operating temperature range

Applications

  • Servers
  • Data Centers and Storage
  • Workstations