SPRUJ85A April   2024  – August 2024

PRODUCTION DATA  

  1.   1
  2.   Description
  3. 1Key Features
  4. 2LaunchPad Module Overview
    1. 3.1 Introduction
    2. 3.2 Preface: Read This First
      1. 3.2.1 If You Need Assistance
      2. 3.2.2 Important Usage Notes
    3. 3.3 Kit Contents
    4. 3.4 Device Information
      1. 3.4.1 System Architecture Overview
      2. 3.4.2 Security
      3. 3.4.3 Compliance
      4. 3.4.4 BoosterPacks
      5. 3.4.5 Component Identification
  5. 3Hardware Description
    1. 4.1  Board Setup
      1. 4.1.1 Power Requirements
        1. 4.1.1.1 Power Input Using USB Type-C Connector
        2. 4.1.1.2 Power Status LEDs
        3. 4.1.1.3 Power Tree
      2. 4.1.2 Push Buttons
      3. 4.1.3 Boot mode Selection
      4. 4.1.4 IO Expander
    2. 4.2  Functional Block Diagram
    3. 4.3  GPIO Mapping
    4. 4.4  Reset
    5. 4.5  Clock
    6. 4.6  Memory Interfaces
      1. 4.6.1 OSPI
      2. 4.6.2 MMC
      3. 4.6.3 eMMC
      4. 4.6.4 Board ID EEPROM
    7. 4.7  Ethernet Interface
      1. 4.7.1 Ethernet PHY #1 - CPSW RGMII/ICSSM
      2. 4.7.2 Ethernet PHY #2 - CPSW RGMII/ICSSM
      3. 4.7.3 LED Indication in RJ45 Connector
    8. 4.8  I2C
    9. 4.9  Industrial Application LEDs
    10. 4.10 SPI
    11. 4.11 UART
    12. 4.12 MCAN
    13. 4.13 FSI
    14. 4.14 JTAG
    15. 4.15 TIVA and Test Automation Header
    16. 4.16 LIN
    17. 4.17 ADC and DAC
    18. 4.18 EQEP and SDFM
    19. 4.19 EPWM
    20. 4.20 BoosterPack Headers
    21. 4.21 Pinmux Mapping
  6. 4Additional Information
    1.     Trademarks
    2. 5.1 Sitara MCU+ Academy
    3. 5.2 Known Board Changes/Issues
      1. 5.2.1 OSPI DQS and LBCLK nets swap
      2. 5.2.2 XDS110 Debugger Bricking Issue
      3. 5.2.3 eMMC CMD and CLK nets swap
  7. 5References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design
  8. 6Revision History

3.1.4 IO Expander

AM263Px LaunchPad has an TCA6416ARTWR IO Expander, that provides general-purpose remote I/O expansion and bidirectional voltage translation for processors through I2C communication, an interface consisting of serial clock (SCL), and serial data (SDA) signals.

The TCA6416A's digital core consists of eight 8-bit data registers: two Configuration registers (input or output selection), two Input Port registers, two Output Port registers, and two Polarity Inversion registers. At power on or after a reset, the I/Os are configured as inputs. However, the system controller can configure the I/Os as either inputs or outputs by writing to the Configuration registers. The data for each input or output is kept in the corresponding Input Port or Output Port register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system controller. In AM263P SoC, the communication with IO Expander is done through I2C1 bus. The signals that are coming out of the IO Expander shown in IO Expander. Please refer to TCA6416ARTWR-Datasheet for programming guide of TCA6416ARTWR.

AM263P IO ExpanderFigure 3-7 IO Expander