SLLSF47D February   2018  – April 2024 TUSB1044

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 Switching Characteristics
    7. 5.7 Timing Requirements
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 USB 3.1
      2. 6.3.2 DisplayPort
      3. 6.3.3 4-Level Inputs
      4. 6.3.4 Receiver Linear Equalization
    4. 6.4 Device Functional Modes
      1. 6.4.1 Device Configuration in GPIO mode
      2. 6.4.2 Device Configuration in I2C Mode
      3. 6.4.3 DisplayPort Mode
      4. 6.4.4 Custom Alternate Mode
      5. 6.4.5 Linear EQ Configuration
      6. 6.4.6 Adjustable VOD Linear Range and DC Gain
      7. 6.4.7 USB3.1 Modes
    5. 6.5 Programming
      1. 6.5.1 Use The Following Procedure to Write to TUSB1044 I2C Registers:
      2. 6.5.2 Use The Following Procedure to Read the TUSB1044 I2C Registers:
      3. 6.5.3 Use The Following Procedure for Setting a Starting Sub-Address for I2C Reads:
    6. 6.6 Register Maps
      1. 6.6.1 TUSB1044 Registers
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curve
    3. 7.3 System Examples
      1. 7.3.1 USB 3.1 only (USB/DP Alternate Mode)
      2. 7.3.2 USB3.1 and 2 lanes of DisplayPort
      3. 7.3.3 DisplayPort Only
      4. 7.3.4 USB 3.1 only (USB/Custom Alternate Mode)
      5. 7.3.5 USB3.1 and 1 Lane of Custom Alt Mode
      6. 7.3.6 USB3.1 and 2 Lane of Custom Alt Mode
      7. 7.3.7 USB3.1 and 4 Lane of Custom Alt Mode
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 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

6.1 Overview

The TUSB1044 is a USB Type-C Alt Mode redriver switch supporting data rates up to 10.0 Gbps. 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. It can also be configured to support custom USB Type-C alternate modes.

The TUSB1044 provides several levels of receive equalization to compensate for cable and board trace loss due to inter-symbol interference (ISI) when USB 3.1 Gen 2 or DisplayPort (or other Alt modes) signals travel across a PCB or cable. This device requires a 3.3V power supply. It comes for both commercial temperature range and industrial temperature range operation.

For host (source) or device (sink) applications, the TUSB1044 enables the system to pass both transmitter compliance and receiver jitter tolerance tests for USB 3.1 Gen 2 and DisplayPort version 2.1 UHBR10. The re-driver 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 (Refer to Table 6-8). This flexible control makes it easy to set up the device to pass various standard compliance requirements.

The TUSB1044 advanced state machine makes it transparent to hosts and devices. After power up, the TUSB1044. periodically performs receiver detection on the TX pairs. If it detects a USB 3.1 receiver, the RX termination is enabled, and the TUSB1044 is ready to re-drive.

The TUSB1044 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 6-4 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 3.1 compliant.