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

B Revision A Design Changes

The AM243x LaunchPad had various design changes for the revision A of the board. The changes are listed below.

  1. SoC_I2C0 Signal Pull-Up Resistor Value Change
    Table B-1 SoC_I2C0 Pull-Up Resistor Values
    LP Revision AM243x LP E3 AM243x LP A
    R237, R238 4.7kΩ 2.2kΩ
  2. Added Secondary BoosterPack Signal Routing for Servo BoosterPack Support
    1. Added three, 2:1(SPDT), four-channel analog switches to switch the signal routing to the Launchpad's boostpack headers. These switches will determine if the BoosterPack signal routing is the default routing or the Servo BoosterPack support routing.
      Table B-2 BoosterPack Switch Routing
      BP Header Routing ALX Number Signal
      J2.15 Default N1 SPI3_D0
      Servo Bp K4 PRG0_PRU0_GPI18
      J2.12 Default N4 SPI3_CS1
      Servo Bp L1 PRG0_PRU0_GPI11
      J5.43 Default L1 MAIN_UART4_RXD
      Servo Bp A18 GPIO1_69
      J8.80 Default K18 TIMER_IO0
      Servo Bp Y18 EPWM3_B
      J8.79 Default K20 TIMER_IO1
      Servo Bp P21 EPWM5_A
      J8.78 Default J19 TIMER_IO2
      Servo Bp V20 EPWM8_B
      J8.77 Default J18 TIMER_IO3
      Servo Bp U19 EPWM8_A
      J8.76 Default J20 TIMER_IO4
      Servo Bp F3 EPWM7_B
      J8.75 Default J21 TIMER_IO5
      Servo Bp D1 EPWM7_A
      J6.57 Default T3 GPIO1_36
      Servo Bp F4 PRG0_PRU1_GPO8
    2. Added one single-pole single-throw switch (SW6) that controls the select lines of all three analog switches.
      • When the switch is open, then the boosterpack signals signals as on previous revisions.
      • When the switch is closed, then the boosterpack signal routing is in "Servo BoosterPack" mode and an orange LED (LD17) will glow.