SNLU354 November   2024 TUSB2E221

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Getting Started
    2. 2.2 EVM Configuration
      1. 2.2.1 Power Modes
        1. 2.2.1.1 Self-Powered Configuration
        2. 2.2.1.2 Bus-Powered Configuration
        3. 2.2.1.3 External Power
      2. 2.2.2 Functional Modes
        1. 2.2.2.1 I2C-Enabled Repeater Mode
        2. 2.2.2.2 GPIO Repeater Mode
        3. 2.2.2.3 UART Mode
      3. 2.2.3 I/O and Interrupts
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 Board Layout
    3. 3.3 Bill of Materials
  9. 4Additional Information
    1. 4.1 Trademarks
    2. 4.2 Related Documentation

2.2.2.3 UART Mode

In UART mode, the TUSB2E11 acts a 3.3V to 1.2V level shifter to support in-system debug. UART mode can be set per-port as described in the TUSB2E221 data sheet. In the configuration below, both eUSB-USB ports are set to UART mode.

Table 2-7 UART Mode Jumper Configuration
DesignatorJumper PositionDescription
J51-2EQ1 set high
J111-2EQ0 set high
J171-2SDA pulled high through a 1KΩ resistor
J181-2SLC pulled high through a 1KΩ resistor