Parade Technologies: PCI Express® (PCIe®) Gen5

Product Summary

Parade Technologies' PCI Express® (PCIe®) Gen5 device is a unidirectional 4-channel linear redriver (PS8580/PS8581) that supports PCI Express® (PCIe®) Gen5 at data rates up to 32.0 GTps, and a bidirectional 16 Lane retimer (PS8936).

Product main features

Supports PCIe® operation at 2.5GTps, 5.0GTps, 8.0GTps, 16.0GTps, and 32.0GTps

Product lineup

PS8580/PS8581

A unidirectional 4-channel linear redriver that supports PCI Express® (PCIe®) Gen5 with data rates up to 32.0 GTps. Additionally, PS8580 with integrated 2x2 crossbar switch supports multiplexing, demultiplexing, or interoperation. Ideal for applications incorporating high lane count PCIe® bus widths, such as workstations and enterprise data center systems including storage and servers. The extremely low power consumption of PS8580 and PS8581 reduces overall system power consumption and reduces heat dissipation for mobile applications.

It also eliminates unnecessary signal distortion that can induce errors in physical interface losses such as PCIe® interconnect cables, PCB traces, and connectors. Additionally, it increases data transmission reliability, enables longer PCIe® interconnect cables and PCB traces, and enables system scalability. In a typical application, PS8580/PS8581 are used in pairs, one for the downstream PCIe® channel and the other for the upstream PCIe® channel.

■ Features & block diagram

PS8580/PS8581 block diagram — Block Diagram

・2.5GTps, 5.0GTps, 8.0GTps, 16.0GTps, and 32.0GTps
Supports PCIe® operation
・2×2 crossbar switch (PS8580 only)
・Ultra low operating power and standby power
・Programmable equalizer
・Low latency
・Low additional jitter
・Supports L1PM function
・Equipped with automatic squelch function
・Supports CXL2.0 Alt mode
・Supports SMBus/I2C configuration and external EEPROM configuration (optional)
・1.8V single power supply
・2.8mm x 6mm 38-pin QFN halogen-free RoHS package
・ESD: 3KV(HBM)

■ Target applications

・Desktop/Laptop PC
·server
・Data center
·Work station

PS8936

A bidirectional 16-lane retimer (using 32 total data channels) that supports PCI Express® (PCIe®) Gen5 with data rates up to 32 GTps. It supports low latency and is ideal for applications incorporating high lane count PCIe® bus widths, such as workstations and enterprise data center systems including storage and servers. The ultra-low latency feature also enables support for CXL 2.0 Alt mode, which enables memory sharing to improve performance, reduce software stack complexity, and reduce system cost.

As a retimer, it also eliminates unwanted signal distortion that can induce errors due to crosstalk, system noise, or physical interface losses such as PCIe® interconnect cables, PCB traces, and connectors. This device increases data transmission reliability, enables longer PCIe® interconnect cables and PCB traces, and enables system scalability. An integrated AC cap on the transmitter lane helps customers save on BOM costs, and an embedded MPU provides a robust way to monitor link status.

■ Features & block diagram

・Retimer compliant with PCIe® 5.0 specification
- Supports PCIe® operation at 2.5GTps, 5GTps, 8GTps, 16GTps, 32GTps
・Supports 16 bidirectional lanes with 32 channels
·Low power consumption
・Adaptive equalization to compensate for up to 36dB channel loss
・Supports three configurable operating modes:
- FPR: Full protocol retimer
- LLM: Intel's Low Latency Mode
- PABR: Protocol-aware bit-level retimer
・Voltage and timing margin for each channel
・Supports link branching 1×16, 2×8, 4×4, 8×2
・Autonomous segmented link training
・No external AC cap required for transmitter
・Supports CXL 2.0 Alt mode
・Built-in MPU for link status monitoring
・Built-in temperature sensor
・PWM signal output for data rate display
-Near zero latency in Low Latency Mode (LLM) and PABR mode
・Supports SRIS/SRNS clocking
・Supports lane reversal and hot plug
・Supports SMBus/I2C configuration and external EEPROM configuration
・8 selectable addresses for SMBus/I2C control
- Supports power saving states, L1 (standby) and L1PM (sleep)
- Supports JTAG debug port, compliant with IEEE 1149.1 and IEEE 1149.6
・0.9V and 1.8V power supply
・8.9mm x 22.8mm 354-ball BGA package
・Operating temperature range: -40℃ to 85℃