SPRUJ10D May   2022  – September 2023

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Preface: Read This First
    1. 2.1 Sitara MCU+ Academy
    2. 2.2 If You Need Assistance
    3. 2.3 Important Usage Notes
  5. 2Kit Overview
    1. 3.1 Kit Contents
    2. 3.2 Key Features
    3. 3.3 Component Identification
    4. 3.4 BoosterPacks
    5. 3.5 Compliance
    6. 3.6 Security
  6. 3Board Setup
    1. 4.1 Power Requirements
      1. 4.1.1 Power Input Using USB Type-C Connector
      2. 4.1.2 Power Status LEDs
      3. 4.1.3 Power Tree
    2. 4.2 Push Buttons
    3. 4.3 Boot Mode Selection
  7. 4Hardware Description
    1. 5.1  Functional Block Diagram
    2. 5.2  GPIO Mapping
    3. 5.3  Reset
    4. 5.4  Clock
    5. 5.5  Memory Interface
      1. 5.5.1 QSPI
      2. 5.5.2 Board ID EEPROM
    6. 5.6  Ethernet Interface
      1. 5.6.1 Ethernet PHY #1 - CPSW RGMII/ICSSM
      2. 5.6.2 Ethernet PHY #2 - CPSW RGMII/ICSSM
      3. 5.6.3 LED Indication in RJ45 Connector
    7. 5.7  I2C
    8. 5.8  Industrial Application LEDs
    9. 5.9  SPI
    10. 5.10 UART
    11. 5.11 MCAN
    12. 5.12 FSI
    13. 5.13 JTAG
    14. 5.14 Test Automation Header
    15. 5.15 LIN
    16. 5.16 MMC
    17. 5.17 ADC and DAC
    18. 5.18 EQEP and SDFM
    19. 5.19 EPWM
    20. 5.20 BoosterPack Headers
    21. 5.21 Pinmux Mapping
  8. 5References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design
  9. 6Revision History

4.10 UART

The AM263x LaunchPad uses the XDS110 as a USB2.0 to UART bridge for terminal access. UART0 transmit and receive signals of the AM263x SoC are mapped to the XDS110 with a dual channel isolation buffer (ISO7221DR) for translating from the 3.3V IO voltage supply to the 3.3V XDS supply. The XDS110 is connected to a micro-B USB connector for the USB 2.0 signals. ESD protection is provided to the USB 2.0 signals by a transient voltage suppression device (TPD4E004DRYR). The micro-B USB connector's VBUS 5V power is mapped to a low dropout regulator (TPS79601DRBR) to generate the 3.3V XDS110 supply. A separate 3.3V supply for the XDS110 allows for the emulator to maintain a connection when power to the LaunchPad is removed.

A separate UART instance is mapped directly to the BoosterPack header.

GUID-20220502-SS0I-L5RM-RKKX-XDMGHWB2QJVS-low.png Figure 4-13 UART