SLLSEI0D July   2015  – January 2022 TUSB4020BI

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 (1)
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 3.3-V I/O Electrical Characteristics
    6. 7.6 Hub Input Supply Current
    7. 7.7 Power-Up Timing Requirements
  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 Clock Generation
      4. 8.3.4 Power-Up and Reset
    4. 8.4 Device Functional Modes
      1. 8.4.1 External Configuration Interface
    5. 8.5 Programming
      1. 8.5.1 One-Time Programmable (OTP) Configuration
      2. 8.5.2 I2C EEPROM Operation
      3. 8.5.3 SMBus Slave Operation
    6. 8.6 Register Maps
      1. 8.6.1 Configuration Registers
        1. 8.6.1.1  ROM Signature Register (offset = 0h) [reset = 0h]
        2. 8.6.1.2  Vendor ID LSB Register (offset = 1h) [reset = 51h]
        3. 8.6.1.3  Vendor ID MSB Register (offset = 2h) [reset = 4h]
        4. 8.6.1.4  Product ID LSB Register (offset = 3h) [reset = 25h]
        5. 8.6.1.5  Product ID MSB Register (offset = 4h) [reset = 80h]
        6. 8.6.1.6  Device Configuration Register (offset = 5h) [reset = 1Xh]
        7. 8.6.1.7  Battery Charging Support Register (offset = 6h) [reset = 0Xh]
        8. 8.6.1.8  Device Removable Configuration Register (offset = 7h) [reset = 0Xh]
        9. 8.6.1.9  Port Used Configuration Register (offset = 8h) [reset = 0h]
        10. 8.6.1.10 PHY Custom Configuration Register (offset = 9h) [reset = 0h]
        11. 8.6.1.11 Device Configuration Register 2 (offset = Ah)
        12. 8.6.1.12 UUID Registers (offset = 10h to 1Fh)
        13. 8.6.1.13 Language ID LSB Register (offset = 20h)
        14. 8.6.1.14 Language ID MSB Register (offset = 21h)
        15. 8.6.1.15 Serial Number String Length Register (offset = 22h)
        16. 8.6.1.16 Manufacturer String Length Register (offset = 23h)
        17. 8.6.1.17 Product String Length Register (offset = 24h)
        18. 8.6.1.18 Serial Number Registers (offset = 30h to 4Fh)
        19. 8.6.1.19 Manufacturer String Registers (offset = 50h to 8Fh)
        20. 8.6.1.20 Product String Registers (offset = 90h to CFh)
        21. 8.6.1.21 Additional Feature Configuration Register (offset = F0h)
        22. 8.6.1.22 Charging Port Control Register (offset = F2h)
        23. 8.6.1.23 Device Status and Command Register (offset = F8h)
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Crystal Requirements
      2. 9.1.2 Input Clock Requirements
    2. 9.2 Typical Applications
      1. 9.2.1 Upstream Port Implementation
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Downstream Port 1 Implementation
      3. 9.2.3 Downstream Port 2 Implementation
      4. 9.2.4 VBUS Power Switch Implementation
      5. 9.2.5 Clock, Reset, and Miscellaneous
      6. 9.2.6 Power Implementation
  10. 10Power Supply Recommendations
    1. 10.1 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 Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support 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

8.6.1.17 Product String Length Register (offset = 24h)

Figure 8-18 Register Offset 24h
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0
R R/W R/W R/W R/W R/W R/W R/W
LEGEND: R/W = Read/Write; R = Read only; –n = value after reset
Table 8-20 Bit Descriptions – Product String Length Register
Bit Field Name Access Reset Description
7 RSVD RO Reserved. Read only, returns 0 when read.
6:0 prodStringLen RO/RW Product string length. The string length in bytes for the product string. The default value is 0, indicating that a product string is not provided. The maximum string length is 64 bytes.
When customStrings is 1, this field may be overwritten by the contents of an attached EEPROM or by an SMBus host.
When the field is non-zero, a product string of prodStringLen bytes is returned at string index 2 from the data contained in the Product String registers.