SPRUJ12F August   2021  – January 2024 AM2431 , AM2432 , AM2434

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Preface: Read This First
    1. 1.1 If You Need Assistance
    2. 1.2 Important Usage Notes
  5. 2Kit Overview
    1. 2.1 Kit Contents
    2. 2.2 Key Features
    3. 2.3 Component Identification
    4. 2.4 BoosterPacks
    5. 2.5 Compliance
    6. 2.6 Security
  6. 3Board Setup
    1. 3.1 Power Requirements
      1. 3.1.1 Power Input Using USB Type-C Connector
      2. 3.1.2 Power Status LED's
      3. 3.1.3 Power Tree
      4. 3.1.4 Power Sequence
    2. 3.2 Push Buttons
    3. 3.3 Boot Mode Selection
  7. 4Hardware Description
    1. 4.1  Functional Block Diagram
    2. 4.2  BoosterPack Headers
      1. 4.2.1 Pinmux for BoosterPack
    3. 4.3  GPIO Mapping
    4. 4.4  Reset
    5. 4.5  Clock
    6. 4.6  Memory Interface
      1. 4.6.1 QSPI Interface
      2. 4.6.2 Board ID EEPROM
    7. 4.7  Ethernet Interface
      1. 4.7.1 Ethernet PHY Strapping
      2. 4.7.2 Ethernet PHY - Power, Clock, Reset, Interrupt
      3. 4.7.3 LED indication in Ethernet RJ45 Connector
    8. 4.8  USB 2.0 Interface
    9. 4.9  I2C Interface
    10. 4.10 Industrial Application LEDs
    11. 4.11 UART Interface
    12. 4.12 eQEP Interface
    13. 4.13 CAN Interface
    14. 4.14 FSI Interface
    15. 4.15 JTAG Emulation
    16. 4.16 Test Automation Interface
    17. 4.17 SPI Interface
  8. 5References
    1. 5.1 Reference Documents
    2. 5.2 Other TI Components Used in This Design
  9.   A E3 Design Changes
  10.   B Revision A Design Changes
  11.   Revision History

4.2 BoosterPack Headers

GUID-20210719-CA0I-V6B8-ZXTC-2ND8JPMQ8TCR-low.png Figure 4-2 BoosterPack Header Pinout

The AM243x LaunchPad supports two fully independent BoosterPack XL connectors. BoosterPack site #1 (J1/J3, J2/J4) is located in between the SoC and the bootmode DIP switch. BoosterPack site #2 (J5/J7, J6/J8) is located in between the SoC and the RJ45 connectors. The GPIO pin numbers as well as the BoosterPack compliant features are listed in Figure 4-2. Each GPIO has multiple functions available through the GPIO mux. The signals connected from the SoC to the BoosterPack headers include:

  • SPI0 and SPI3
  • UART0 and UART2
  • I2C0 and I2C1
  • MMC1
  • ADC0
  • EHRPWM0_A/B and EHRPWM1_A/B
  • GPIO's
  • 5 V and 3.3 V power supplies

A BoosterPack that is connected to site #1 will be powered by the AM243x. A BoosterPack that is connected to site #2 can either be powered by the AM243x or have it's power sourced from the Boosterpack itself depending on whether or not the 0Ω resistors (R161, R163) are mounted. The resistors are mounted by default as shown in Figure 4-3, the AM243x will provide the VSYS_3V3 and VSYS_5V0 source voltage for the BoosterPack. When left unpopulated, the BoosterPack will be required to source its own power.

Note: Sourcing power to the LaunchPad from the BoosterPack should not be attempted.
Table 4-1 BoosterPack Power Sourcing for BoosterPack Site #2
Function Mount R161 and R163 (Default) Unmount R161 and R163
Power to BoosterPack sourced from LaunchPad ✔
Power to BoosterPack sourced from the BoosterPack ✔
GUID-20210719-CA0I-BPVD-BLMV-JJKRKQMLSK6V-low.png Figure 4-3 Site #2 BoosterPack Header