SLVSL35 September   2026 TUSB2514B

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Battery Charging Features
      2. 6.3.2 USB Power Management
      3. 6.3.3 Clock Generation
        1. 6.3.3.1 Crystal Requirements
        2. 6.3.3.2 Input Clock Requirements
      4. 6.3.4 Power-Up and Reset
    4. 6.4 Device Functional Modes
      1. 6.4.1 I2C EEPROM Operation
      2. 6.4.2 SMBus Target Operation
      3. 6.4.3 Port Configuration
  8. 7 Register Maps
    1. 7.1 TUSB2514 Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 TUSB2514B Power Supply
      2. 8.3.2 Downstream Port Power
      3. 8.3.3 Ground
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Placement
        2. 8.4.1.2 Package Specific
        3. 8.4.1.3 Differential Pairs
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.4.3 Port Configuration

The TUSB2514B port configurations can be selected by registers. The Port Used Configuration Register defines how many ports can be reported by the hub. Ports may be disabled by pulling the DP/PRT_DIS_Pn and DM/PRT_DIS_Mn high and are sampled upon the deassertion of GRST#.

The TUSB2514B downstream ports can also be configured for either removable or non-removable based on the sampled state of the NON_REMn pins. HS_SUSPEND/NON_REM0 pin can be either active low or active high output as detailed in the table below.

Table 6-4 Non-removable Configuration
NON_REM1 NON_REM0 Descriptions
0 0 All downstream ports are removable. HS_SUSPEND is active high.
0 1 Port 1 is non-removable. Remaining ports are removable. HS_SUSPEND is active low.
1 0 Ports 1 and 2 are non-removable. Remaining ports are removable. HS_SUSPEND is active high.
1 1 Ports 1, 2, and 3 are non-removable. Remaining ports are removable. HS_SUSPEND is active low.

The Device Removable Configuration Register defines if the ports that are reported as used have permanently connected devices or not.