SNLS729 September   2025 DS160PR410-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 DC Electrical Characteristics
    6. 5.6 High Speed Electrical Characteristics
    7. 5.7 SMBUS/I2C Timing Charateristics
    8. 5.8 Typical Characteristics
    9. 5.9 Typical Jitter Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Linear Equalization
      2. 6.3.2 Flat-Gain
      3. 6.3.3 Receiver Detect State Machine
      4. 6.3.4 Cross Point
    4. 6.4 Device Functional Modes
      1. 6.4.1 Active PCIe Mode
      2. 6.4.2 Linear Equalizer (Buffer) Mode
      3. 6.4.3 Standby Mode
    5. 6.5 Programming
      1. 6.5.1 Pin Mode
        1. 6.5.1.1 Five-Level Control Inputs
      2. 6.5.2 SMBUS/I2C Register Control Interface
        1. 6.5.2.1 Shared Registers
        2. 6.5.2.2 Channel Registers
      3. 6.5.3 SMBus/I 2 C Controller Mode Configuration (EEPROM Self Load)
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 x4 Lane Configuration
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.2 Flat-Gain

The GAIN pin can be used to set the overall data-path flat gain (DC and AC) of the DS160PR410-Q1 when the device is in Pin mode. In I2C mode each channel can be independently set. Table 6-2 provides flat gain control configuration settings. In the default recommendation for most systems will be GAIN = L4 (float) that provides flat gain of 0.6dB.

The flat-gain and equalization of the DS160PR410-Q1 must be set such that the output signal swing at DC and high frequency does not exceed the DC and AC linearity ranges of the devices, respectively.

Table 6-2 Flat Gain Configuration Settings
Pin mode GAINI2C Mode flat_gain_2:0Flat Gain
L00−5.6dB
L11−3.8dB
L23−1.3dB
L3 7 +2.5dB
L4 (float)50.6dB (default recommendation)