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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9 Power Supply Recommendations

Follow these general guidelines when designing the power supply:

  1. The power supply should be designed to provide the operating conditions outlined in the recommended operating conditions section in terms of DC voltage, AC noise, and start-up ramp time.
  2. The DS320PR822 does not require any special power supply filtering, such as ferrite beads, provided that the recommended operating conditions are met. Only standard supply decoupling is required. Typical supply decoupling consists of a 0.1 µF capacitor per VCC pin, one 1.0 µF bulk capacitor per device, and one 10 µF bulk capacitor per power bus that delivers power to one or more DS320PR822 devices. The local decoupling (0.1 µF) capacitors must be connected as close to the VCC pins as possible and with minimal path to the DS320PR822 ground pad.
  3. The DS320PR822 voltage regulator output pins require decoupling caps of 0.1 µF near each pin. The regulator is only for internal use. Do not use to provide power to any external component.
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