SNLU302 March   2025 DS320PR810 , DS320PR822

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Access Methods
    1. 1.1 Register Programming Through SMBus
    2. 1.2 Device Configuration Through External EEPROM
  5. 2Register Map Overview
    1. 2.1 Share Registers
    2. 2.2 Channel Registers
  6. 3Equalization Control Settings
  7. 4CTLE Index and Flat Gain Selection Matrix
  8. 5Example Programming Sequences
    1. 5.1 Set CTLE Gain Level
    2. 5.2 Set CTLE Flat Gain Level
    3. 5.3 Set PD Control
    4. 5.4 Set SEL Input (DS320PR822)
  9. 6References

Abstract

This user's guide provides a programming reference for the DS320PR810 Octal-Channel PCI-Express Gen-5 Linear Redriver and the DS320PR822 PCI-Express Gen-5 Linear Redriver (hereafter referred to as DS320PR810, excluding the SEL bit selection programming example). This document contains detailed information related to the DS320PR810 advanced configuration options. The intended audience includes software engineers working on system diagnostics and control software.

TI recommends that the reader be familiar with the appropriate device-specific data sheets (DS320PR810 Eight-Channel Linear Redriver for PCIe 5.0, CXL 1.1 Data Sheet or DS320PR822 Linear Redriver for PCIe 5.0, CXL 2.0 with Four 2x2 Crosspoint Mux Data Sheet). This document and all other collateral data related to the DS320PR810 redriver (application notes, models, and so forth) are available to download from the TI website. Alternatively, contact your local Texas Instruments field sales representative.