SNLS714 September   2022 DS320PR822

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 DC Electrical Characteristics
    6. 6.6 High Speed Electrical Characteristics
    7. 6.7 SMBUS/I2C Timing Charateristics
    8. 6.8 Typical Characteristics
    9. 6.9 Typical Jitter Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Linear Equalization
      2. 7.3.2 Flat-Gain
      3. 7.3.3 Receiver Detect State Machine
      4. 7.3.4 Cross Point
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active PCIe Mode
      2. 7.4.2 Active Buffer Mode
      3. 7.4.3 Standby Mode
    5. 7.5 Programming
      1. 7.5.1 Pin Mode
        1. 7.5.1.1 Five-Level Control Inputs
      2. 7.5.2 SMBUS/I2C Register Control Interface
        1. 7.5.2.1 Shared Registers
        2. 7.5.2.2 Channel Registers
      3. 7.5.3 SMBus/I 2 C Primary Mode Configuration (EEPROM Self Load)
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 UPI x24 Lane Cross-Point Configuration
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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1 Features

  • Linear redriver supporting PCIe 5.0, CXL 2.0, UPI 2.0 up to 32 Gbps
  • Supports most ac coupled interfaces including DP, SAS, SATA, XFI
  • Provides four 2x2 Crosspoint mux function
  • CTLE boosts up to 22 dB at 16 GHz
  • Ultra-low latency of 100 ps
  • Low additive random jitter of 75 fs for PRBS data
  • Excellent return loss of −10 dB at 16 GHz
  • Single 3.3 V supply
  • Internal voltage regulator provides immunity to supply noise
  • Low active power of 160 mW per channel
  • No heat sink required
  • Pin-strap, SMBus or EEPROM programming
  • Automatic receiver detection for PCIe use cases
  • Protocol agnostic linear redriver allows seamless support for PCIe link training
  • Support for x2, x4, x8, x16, x24 bus width with one or multiple DS320PR822
  • Temperature range of –40 °C to 85 °C
  • 5.5 mm × 10 mm, 64 pin WQFN package