SLLSEV7E August   2016  – March 2023 TUSB546-DCI

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Power Supply Characteristics
    6. 6.6  DC Electrical Characteristics
    7. 6.7  AC Electrical Characteristics
    8. 6.8  Timing Requirements
    9. 6.9  Switching Characteristics
    10. 6.10 Typical Characteristics
      1.      Parameter Measurement Information
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 USB 3.1
      2. 7.3.2 DisplayPort
      3. 7.3.3 4-Level Inputs
      4. 7.3.4 Receiver Linear Equalization
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Configuration in GPIO Mode
      2. 7.4.2 28
      3. 7.4.3 Device Configuration In I2C Mode
      4. 7.4.4 DisplayPort Mode
      5. 7.4.5 Linear EQ Configuration
      6. 7.4.6 USB3.1 Modes
      7. 7.4.7 Operation Timing – Power Up
    5. 7.5 Programming
    6. 7.6 Register Maps
      1. 7.6.1 General Register (address = 0x0A) [reset = 00000001]
      2. 7.6.2 DisplayPort Control/Status Registers (address = 0x10) [reset = 00000000]
      3. 7.6.3 DisplayPort Control/Status Registers (address = 0x11) [reset = 00000000]
      4. 7.6.4 DisplayPort Control/Status Registers (address = 0x12) [reset = 00000000]
      5. 7.6.5 DisplayPort Control/Status Registers (address = 0x13) [reset = 00000000]
      6. 7.6.6 USB3.1 Control/Status Registers (address = 0x20) [reset = 00000000]
      7. 7.6.7 USB3.1 Control/Status Registers (address = 0x21) [reset = 00000000]
      8. 7.6.8 USB3.1 Control/Status Registers (address = 0x22) [reset = 00000100]
  8. 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
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
      1. 8.3.1 USB 3.1 Only
      2. 8.3.2 USB 3.1 and 2 Lanes of DisplayPort
      3. 8.3.3 DisplayPort Only
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.1 Overview

The TUSB546-DCI is a VESA USB Type-C Alt Mode redriving switch supporting data rates up to 8.1 Gbps for downstream facing port. These devices utilize 5th generation USB redriver technology. The devices are utilized for DFP configurations C, D, E, and F from the VESA DisplayPort Alt Mode on USB Type-C.

The TUSB546-DCI provides several levels of receive equalization to compensate for cable and board trace loss due to inter-symbol interference (ISI) when USB 3.1 Gen1 or DisplayPort 1.4 signals travel across a PCB or cable. This device requires a 3.3-V power supply. It comes in a commercial temperature range and industrial temperature range.

For a host application the TUSB546-DCI enables the system to pass both transmitter compliance and receiver jitter tolerance tests for USB 3.1 Gen 1 and DisplayPort version 1.4 HBR3. 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. The equalization should be set based on the amount of insertion loss before the TUSB546-DCI receivers. Independent equalization control for each channel can be set using EQ[1:0], SSEQ[1:0], and DPEQ[1:0] pins.

The TUSB546-DCI advanced state machine makes it transparent to hosts and devices. After power up, the TUSB546-DCI. periodically performs receiver detection on the TX pairs. If it detects a USB 3.1 Gen1 receiver, the RX termination is enabled, and the TUSB546-DCI is ready to re-drive.

The device ultra-low-power architecture operates at a 3.3-V power supply and achieves Enhanced performance. The automatic LFPS De-Emphasis control further enables the system to be USB3.1 compliant.