SLLSET2 August   2017 TUSB8042

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics, 3.3-V I/O
    6. 7.6 Timing Requirements, Power-Up
    7. 7.7 Hub Input Supply Current
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Battery Charging Features
      2. 8.3.2 USB Power Management
      3. 8.3.3 One Time Programmable (OTP) Configuration
      4. 8.3.4 Clock Generation
      5. 8.3.5 Crystal Requirements
      6. 8.3.6 Input Clock Requirements
      7. 8.3.7 Power-Up and Reset
    4. 8.4 Device Functional Modes
      1. 8.4.1 External Configuration Interface
      2. 8.4.2 I2C EEPROM Operation
      3. 8.4.3 Port Configuration
      4. 8.4.4 SMBus Slave Operation
    5. 8.5 Register Maps
      1. 8.5.1  Configuration Registers
      2. 8.5.2  ROM Signature Register
      3. 8.5.3  Vendor ID LSB Register
      4. 8.5.4  Vendor ID MSB Register
      5. 8.5.5  Product ID LSB Register
      6. 8.5.6  Product ID MSB Register
      7. 8.5.7  Device Configuration Register
      8. 8.5.8  Battery Charging Support Register
      9. 8.5.9  Device Removable Configuration Register
      10. 8.5.10 Port Used Configuration Register
      11. 8.5.11 Device Configuration Register 2
      12. 8.5.12 USB 2.0 Port Polarity Control Register
      13. 8.5.13 UUID Registers
      14. 8.5.14 Language ID LSB Register
      15. 8.5.15 Language ID MSB Register
      16. 8.5.16 Serial Number String Length Register
      17. 8.5.17 Manufacturer String Length Register
      18. 8.5.18 Product String Length Register
      19. 8.5.19 Device Configuration Register 3
      20. 8.5.20 USB 2.0 Only Port Register
      21. 8.5.21 Serial Number String Registers
      22. 8.5.22 Manufacturer String Registers
      23. 8.5.23 Product String Registers
      24. 8.5.24 Additional Feature Configuration Register
      25. 8.5.25 SMBus Device Status and Command Register
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Discrete USB Hub Product
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Upstream Port Implementation
          2. 9.2.1.2.2 Downstream Port 1 Implementation
          3. 9.2.1.2.3 Downstream Port 2 Implementation
          4. 9.2.1.2.4 Downstream Port 3 Implementation
          5. 9.2.1.2.5 Downstream Port 4 Implementation
          6. 9.2.1.2.6 VBUS Power Switch Implementation
          7. 9.2.1.2.7 Clock, Reset, and Misc
          8. 9.2.1.2.8 TUSB8042 Power Implementation
        3. 9.2.1.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 TUSB8042 Power Supply
    2. 10.2 Downstream Port Power
    3. 10.3 Ground
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Placement
      2. 11.1.2 Package Specific
      3. 11.1.3 Differential Pairs
    2. 11.2 Layout Examples
      1. 11.2.1 Upstream Port
      2. 11.2.2 Downstream Port
  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

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RGC|64
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Four Port USB 3.1 Gen1 Hub
  • USB 2.0 Hub Features
    • Multi Transaction Translator (MTT) Hub: Four Transaction Translators
    • Two Asynchronous Endpoint Buffers Per Transaction Translator
  • Supports Battery Charging:
    • Supports D+/D- Divider Charging Port (ACP1, ACP2, and ACP3) when the Upstream Port is Unconnected or not Configured
    • Supports Automatic Mode for Transition Between DCP or ACP Modes When the Upstream Port is Unconnected
    • Supports Galaxy Charging
    • CDP Mode (Upstream Port Connected)
    • DCP Mode (Upstream Port Unconnected)
    • DCP Mode Complies with Chinese Telecommunications Industry Standard YD/T 1591-2009
  • Supports Operation as a USB 3.1 Gen1 or USB 2.0 Compound Device
  • Per Port or Ganged Power Switching and Over-Current Notification Inputs
  • Supports Four External Downstream Ports
  • Supports Vendor Requests to Read and Write I2C and EEPROM Read at 100 k and 400 k (Default)
  • I2C Master Supports Clock Stretching
  • OTP ROM, Serial EEPROM or I2C/SMBus Slave Interface for Custom Configurations:
    • VID and PID
    • Port Customizations
    • Manufacturer and Product Strings (not by OTP ROM)
    • Serial Number (not by OTP ROM)
  • Application Feature Selection Using Pin Selection or EEPROM or I2C/SMBus Slave Interface
  • Provides 128-Bit Universally Unique Identifier (UUID)
  • Single Clock Input, 24-MHz Crystal or Oscillator
  • Downstream Ports Configurable to USB2.0 Only
  • 64-Pin QFN Package (RGC)

2 Applications

    Computer Systems, Docking Stations, Monitors, Set-Top Boxes

3 Description

The TUSB8042 is a four-port USB 3.1 Gen1 hub. It provides simultaneous SuperSpeed USB and high-speed/full-speed connections on the upstream port and provides SuperSpeed USB, high-speed, full-speed, or low-speed connections on the downstream ports. When the upstream port is connected to an electrical environment that only supports high-speed or full-speed/low-speed connections, SuperSpeed USB connectivity is disabled on the downstream ports.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TUSB8042 VQFN (64) 9.00 mm × 9.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Diagram

TUSB8042 fp_diagram_sllset2.gif

4 Revision History

Table 1.

DATE REVISION NOTES
August 2017 * Initial release.
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