SNLU346 May   2024

 

  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

2.2.2.3 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
Designator Jumper Position Description
J7 1-2 EQ1 set high
J12 1-2 EQ0 set high
J19 1-2 SDA pulled high via 1Kohm resistor
J20 1-2 SLC pulled high via 1Kohm resistor