SLLSG07 March   2025 TUSB1044A

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 USB 3.2 x2 Description
      3. 7.3.3 DisplayPort
      4. 7.3.4 4-Level Inputs
      5. 7.3.5 Receiver Linear Equalization
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Configuration in GPIO Mode
      2. 7.4.2 Device Configuration in I2C Mode
      3. 7.4.3 DisplayPort Mode
      4. 7.4.4 Custom Alternate Mode
      5. 7.4.5 Linear EQ Configuration
      6. 7.4.6 Adjustable VOD Linear Range and DC Gain
      7. 7.4.7 USB3.1 Modes
    5. 7.5 Programming
      1. 7.5.1 Procedure to Write to TUSB1044A I2C Registers:
      2. 7.5.2 Procedure to Read the TUSB1044A I2C Registers:
      3. 7.5.3 Procedure to Set a Starting Sub-Address for I2C Reads:
  9. 8 Register Maps
    1. 8.1 TUSB1044A Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 ESD Protection
      4. 9.2.4 Application Curve
    3. 9.3 System Examples
      1. 9.3.1 USB 3.2 only (USB/DP Alternate Mode)
      2. 9.3.2 USB3.2 and 2 Lanes of DisplayPort
      3. 9.3.3 DisplayPort Only
      4. 9.3.4 USB 3.2 Only (USB/Custom Alternate Mode)
      5. 9.3.5 USB3.2 and 1 Lane of Custom Alt Mode
      6. 9.3.6 USB3.2 and 2 Lanes of Custom Alt Mode
      7. 9.3.7 USB3.2 and 4 Lanes of Custom Alt Mode
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 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 TUSB1044A is a USB Type-C Alt Mode redriver switch supporting data rates up to 10.0Gbps. This device implements 5th generation USB redriver technology. The device is used for configurations C, D, E, and F from the VESA® DisplayPort™ Alt Mode on USB Type-C Standard. The device can also be configured to support custom USB Type-C alternate modes.

The TUSB1044A provides several levels of receive equalization to compensate for cable and board trace loss due to inter-symbol interference (ISI) when USB 3.2 Gen 2 or DisplayPort (or other Alt modes) signals travel across a PCB or cable. This device requires a 3.3V power supply. The device comes for both commercial temperature range and industrial temperature range operation.

For host (source) or device (sink) applications, the TUSB1044A enables the system to pass both transmitter compliance and receiver jitter tolerance tests for USB 3.2 Gen 2 and DisplayPort version 2.1 UHBR10. 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. Equalization control for upstream and downstream facing ports can be set using UEQ[1:0], and DEQ[1:0] pins respectively or through the I2C interface.

Moreover, the CFG[1:0] or the equivalent I2C registers provide the ability to control the EQ DC gain and the voltage linearity range for all the channels (see also Table 7-9). This flexible control allows users to set up the device to pass various standard compliance requirements.

The TUSB1044A advanced state machine makes the device transparent to hosts and devices. After power up, the TUSB1044A periodically performs receiver detection on the TX pairs. If the device detects a USB 3.2 receiver, the RX termination is enabled, and the TUSB1044A is ready to re-drive.

The TUSB1044A provides extremely flexible data path signal direction control using the CTL[1:0], FLIP, DIR[1:0], and SWAP pins or through the I2C interface. Refer to Table 7-5 for detailed information on the input-to-output signal pin mapping.

The device ultra-low-power architecture operates at a 3.3V power supply and achieves enhanced performance. The automatic LFPS De-Emphasis control further enables the system to be USB 3.2 compliant.