JAJSKH5A April   2022  – May 2024 TUSB1142

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4.   概要
  5. 3 Pin Configuration and Functions
  6. 4 Specifications
    1. 4.1  Absolute Maximum Ratings
    2. 4.2  ESD Ratings
    3. 4.3  Recommended Operating Conditions
    4. 4.4  Thermal Information
    5. 4.5  Power Supply Characteristics
    6. 4.6  Control I/O DC Electrical Characteristics
    7. 4.7  USB Electrical Characteristics
    8. 4.8  Timing Requirements
    9. 4.9  Switching Characteristics
    10. 4.10 Typical Characteristics
  7. 5 Parameter Measurement Information
  8. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 4-Level Inputs
      2. 6.3.2 USB Receiver Linear Equalization
        1. 6.3.2.1 Linear EQ Configuration
        2. 6.3.2.2 Full Adaptive Equalization
        3. 6.3.2.3 Fast Adaptive Equalization
      3. 6.3.3 USB Transmitter
        1. 6.3.3.1 Linearity VOD
        2. 6.3.3.2 Limited VOD
        3. 6.3.3.3 Transmit Equalization (Limited Redriver Mode Only)
      4. 6.3.4 USB 3.2 2:1 MUX Description
      5. 6.3.5 USB Polarity Inversion
      6. 6.3.6 Receiver Detect Control
    4. 6.4 Device Functional Modes
      1. 6.4.1 MODE Pin
      2. 6.4.2 Rx EQ Configuration in Pin-Strap Mode
      3. 6.4.3 USB 3.2 Power States
      4. 6.4.4 Disabling U1 and U2
    5. 6.5 Programming
      1. 6.5.1 Pseudocode Examples
        1. 6.5.1.1 Fixed EQ with Linear Redriver Mode
        2. 6.5.1.2 Fixed EQ with Limited Redriver Mode
        3. 6.5.1.3 Fast AEQ with Linear Redriver Mode
        4. 6.5.1.4 Fast AEQ with Limited Redriver Mode
        5. 6.5.1.5 Full AEQ with Linear Redriver Mode
        6. 6.5.1.6 Full AEQ with Limited Redriver Mode
      2. 6.5.2 TUSB1142 I2C Address Options
      3. 6.5.3 TUSB1142 I2C Target Behavior
    6. 6.6 Register Map
      1. 6.6.1 TUSB1142 Registers
  9. 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
        1. 7.2.2.1 USB SSTX Receiver Configuration
        2. 7.2.2.2 USB CRX1/2 Receiver Configuration
          1. 7.2.2.2.1 Fixed Equalization
          2. 7.2.2.2.2 Full Adaptive Equalization
          3. 7.2.2.2.3 Fast Adaptive Equalization
        3. 7.2.2.3 ESD Protection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  10. 8 Device and Documentation Support
    1. 8.1 ドキュメントの更新通知を受け取る方法
    2. 8.2 サポート・リソース
    3. 8.3 Trademarks
    4. 8.4 静電気放電に関する注意事項
    5. 8.5 用語集
  11. 9 Revision History
  12. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

6.1 Overview

The TUSB1142 is a 10 Gbps USB 3.2 linear redriver with 1:2 DeMUX or 2:1 Mux function for USB-C applications. The TUSB1142 is intended to reside between a Host and a USB-C receptacle or between a USB device and a USB-C receptacle. The TUSB1142 supports both USB 3.2 Gen2 (10 Gbps) and Gen1 (5 Gbps) as well as USB 3.2 low power states (Disconnect, U1, U2, and U3).

The TUSB1142 supports up to 16 receiver equalization settings controlled by either pin-strap pins or through I2C registers. The USB connector facing receivers (CRX1 and CRX2) support three equalization modes: Fixed EQ, Fast AEQ, and Full AEQ. Selection between these modes is done through either pin-strap pins or through I2C registers. The other receivers (SSTX) only support Fixed EQ.

The TUSB1142 operates as a linear redriver for signals traversing from the SSTX receivers towards CTX1/2 transmitters. It can operate as either a linear redriver or limited redriver for signals traversing from CRX1/2 receivers towards SSRX transmitters. TUSB1142 defaults to linear redriver but can be enabled for limited redriver by I2C register. When enabled for limited redriver, the SSRX transmitter support four levels of preshoot and four-levels of de-emphasis.