SLLSFP2 September   2024 TUSB1021-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 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 USB 3.2
      2. 7.3.2 4-Level Inputs
      3. 7.3.3 Receiver Linear Equalization
    4. 7.4 Device Functional Modes
      1. 7.4.1 USB 3.2 2:1 MUX Description
      2. 7.4.2 Linear EQ Configuration
      3. 7.4.3 USB3.2 Modes
      4. 7.4.4 Operation Timing – Power Up
    5. 7.5 Programming
      1. 7.5.1 TUSB1021-Q1 I2C Target Behavior
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 ESD Protection
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Register Maps
    1. 9.1 General Register (address = 0x0A) [reset = 00000001]
    2. 9.2 USB3.2 Control/Status Registers (address = 0x20) [reset = 00000000]
    3. 9.3 USB3.2 Control/Status Registers (address = 0x21) [reset = 00000000]
    4. 9.4 USB3.2 Control/Status Registers (address = 0x22) [reset = 00000000]
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.1 Overview

The TUSB1021-Q1 is a linear redriving switch that supports data rates up to 10Gbps. This device uses 5th generation USB redriver technology.

The TUSB1021-Q1 provides sixteen levels of receive equalization to compensate for cable and board trace loss which if not equalized causes inter-symbol interference (ISI) when USB 3.2 signals travel across a PCB or cable. This device requires a 3.3V power supply. The device comes in an automotive grade 2 temperature range.

The TUSB1021-Q1 enables the system to pass both transmitter compliance and receiver jitter tolerance tests for USB 3.2. The redriver recovers incoming data by applying equalization that compensates for channel loss, and drives out signals with a high differential voltage. Each channel has a receiver equalizer with selectable gain settings. Set the equalization based on the amount of insertion loss in the channels connected to the TUSB1021-Q1. Independent equalization control for each channel can be set using EQ[1:0] and SSEQ[1:0] pins.

The TUSB1021-Q1 advanced state machine makes the device transparent to hosts and devices. After power up, the TUSB1021-Q1 periodically performs receiver detection on the TX pairs. If the device detects a USB 3.2 receiver, the RX termination is enabled, and the TUSB1021-Q1 is ready to re-drive.