SLLSFB2 April   2020 TUSB1146

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematics
  4. 4 Revision History
  5. 5 TUSB1146 Pin Configuration and Functions
    1.     TUSB1146 Pin 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  Control I/O DC Electrical Characteristics
    7. 6.7  USB and DP Electrical Characteristics
    8. 6.8  DCI Electrical Characteristics
    9. 6.9  Timing Requirements
    10. 6.10 Switching Characteristics
    11. 6.11 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 USB 3.1
      2. 8.3.2 DisplayPort
      3. 8.3.3 4-level Inputs
      4. 8.3.4 Receiver Linear Equalization
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device Configuration in GPIO Mode
      2. 8.4.2 Device Configuration In I2C Mode
      3. 8.4.3 DisplayPort Mode
      4. 8.4.4 Linear EQ Configuration
      5. 8.4.5 VOD modes
        1. 8.4.5.1 Linearity VOD
        2. 8.4.5.2 Limited VOD
      6. 8.4.6 Transmit Equalization
      7. 8.4.7 USB3.1 Modes
      8. 8.4.8 Downstream Facing Port Adaptive Equalization
        1. 8.4.8.1 Fast Adaptive Equalization in I2C Mode
        2. 8.4.8.2 Full Adaptive Equalization
    5. 8.5 Programming
      1. 8.5.1 Transition between Modes
      2. 8.5.2 Pseudocode Examples
        1. 8.5.2.1 Fast AEQ with linear redriver mode
        2. 8.5.2.2 Fast AEQ with limited redriver mode
        3. 8.5.2.3 Full AEQ with linear redriver mode
        4. 8.5.2.4 Full AEQ with limited redriver mode
      3. 8.5.3 TUSB1146 I2C Address Options
      4. 8.5.4 TUSB1146 I2C Slave Behavior
    6. 8.6 Register Maps
      1. 8.6.1 TUSB1146 Registers
        1. 8.6.1.1  General_1 Register (Offset = 0xA) [reset = 0x1]
          1. Table 13. General_1 Register Field Descriptions
        2. 8.6.1.2  DCI_TXEQ_CTRL Register (Offset = 0xB) [reset = 0x6C]
          1. Table 14. DCI_TXEQ_CTRL Register Field Descriptions
        3. 8.6.1.3  DP01EQ_SEL Register (Offset = 0x10) [reset = 0x0]
          1. Table 15. DP01EQ_SEL Register Field Descriptions
        4. 8.6.1.4  DP23EQ_SEL Register (Offset = 0x11) [reset = 0x0]
          1. Table 16. DP23EQ_SEL Register Field Descriptions
        5. 8.6.1.5  DisplayPort_1 Register (Offset = 0x12) [reset = 0x0]
          1. Table 17. DisplayPort_1 Register Field Descriptions
        6. 8.6.1.6  DisplayPort_2 Register (Offset = 0x13) [reset = 0x0]
          1. Table 18. DisplayPort_2 Register Field Descriptions
        7. 8.6.1.7  AEQ_CONTROL1 Register (Offset = 0x1C) [reset = 0xF0]
          1. Table 19. AEQ_CONTROL1 Register Field Descriptions
        8. 8.6.1.8  AEQ_CONTROL2 Register (Offset = 0x1D) [reset = 0x20]
          1. Table 20. AEQ_CONTROL2 Register Field Descriptions
        9. 8.6.1.9  AEQ_LONG Register (Offset = 0x1E) [reset = 0x77]
          1. Table 21. AEQ_LONG Register Field Descriptions
        10. 8.6.1.10 USBC_EQ Register (Offset = 0x20) [reset = 0x0]
          1. Table 22. USBC_EQ Register Field Descriptions
        11. 8.6.1.11 SS_EQ Register (Offset = 0x21) [reset = 0x0]
          1. Table 23. SS_EQ Register Field Descriptions
        12. 8.6.1.12 USB3_MISC Register (Offset = 0x22) [reset = 0x44]
          1. Table 24. USB3_MISC Register Field Descriptions
        13. 8.6.1.13 USB_STATUS Register (Offset = 0x24) [reset = 0x41]
          1. Table 25. USB_STATUS Register Field Descriptions
        14. 8.6.1.14 VOD_CTRL Register (Offset = 0x32) [reset = 0x40]
          1. Table 26. VOD_CTRL Register Field Descriptions
        15. 8.6.1.15 AEQ_STATUS Register (Offset = 0x3B) [reset = 0x0]
          1. Table 27. AEQ_STATUS Register Field Descriptions
  9. 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
        1. 9.2.2.1 USB and DP Upstream Facing Port (USB Host / DP GPU to USB-C receptacle) Configuration
        2. 9.2.2.2 USB Downstream Facing Port (USB-C receptacle to USB Host) Configuration
          1. 9.2.2.2.1 Fixed Equalization
          2. 9.2.2.2.2 Fast Adaptive Equalization
          3. 9.2.2.2.3 Full Adaptive Equalization
      3. 9.2.3 Application Curve
    3. 9.3 System Examples
      1. 9.3.1 USB 3.1 Only
      2. 9.3.2 USB 3.1 and 2 Lanes of DisplayPort
      3. 9.3.3 DisplayPort Only
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

8.5.1 Transition between Modes

The TUSB1146 allows for transitioning between any mode (USB-only to 4DP, 4DP to USB+2DP, and so forth). The USB-C standard requires transitioning to the USB Safe State before entering to or exiting from an Alternate Mode. The USB Safe State defines an electrical state for the SBU1/2 and SSTX/SSRX for DFPs, UFPs, and Active Cables when transitioning between USB and an Alternate Mode. Therefore before entering to or exiting from four lane DP mode it is recommended to first enter the Disable state (CTLSEL = 2'b00 or (CTL0 pin = 0 and CTL1 pin = 0)).

TUSB1146 TUSB1146_MODES_TRANS.gifFigure 28. Recommended Mode Transitions