The PS8598 is a bidirectional 8-lane PCIe linear redriver supporting up to PCIe Gen6 64GT/s with PAM4. It integrates programmable equalizers to effectively compensate for PCB trace and cable losses, while maintaining excellent linearity to ensure transparency during PCIe link training and preserve signal integrity. The device includes an automatic squelch function that drives outputs to common-mode voltage when input signals fall below threshold, preventing unnecessary signal repetition. Featuring a low-power architecture, the PS8598 eliminates the need for a heatsink, streamlining system design and reducing overall BoM cost.

PS8598 fully supports PCIe power-saving modes, including L0s, L1, and deep power-saving substates L1.1 and L1.2, with transitions controlled via the CLKREQB pin tied to system. A channel-based power management mechanism allows idle lanes to automatically enter low-power states, resuming instantly once valid signals are detected. Configuration is supported through SMBus/I2C programming or external EEPROM loading.

With its combination of high linearity, advanced equalization, and fine-grained power management, the PS8598 is well suited for high-bandwidth, low-power applications in servers, data centers, and other PCIe Gen6 platforms.

Key Features

  • Supports PCIe operation at 2.5GT/s, 5.0GT/s, 8.0GT/s, 16.0GT/s, 32.0GT/s, and 64GT/s (PAM4)
  • 8 bi-directional lanes with supporting stack up to x16 link.
  • Supports PCIe Link training and power management
  • Supports PCIe various Power Saving States, Total 1mW @ Sleep mode.
    • L1 & L0s – standby mode
    • L1.1 & L1.2 – sleep mode
  • Integrated automatic squelch function
  • Programmable equalizer booting up to 18dB
  • Supports CXL3.0 with ultra-low latency
  • Embedded transmitter AC coupling capacitors
  • Supports SMBus/I2C configuration and external EEPROM configuration
  • Single 2.5V power supply
  • No heat sink needed
  • ESD: HBM 4KV, CDM 2KV
  • 8.9mm x 13.2mm 211-ball BGA package
  • PIN to PIN Intel PCIe 6.0 Standard Ball Map

Applications

  • Servers and Datacenters
  • Workstations and Storage