SPRUIY1D November   2020  – August 2024

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Preface: Read This First
      1. 1.2.1 If You Need Assistance
      2. 1.2.2 Important Usage Notes
    3. 1.3 Kit Overview
      1. 1.3.1 Kit Contents
      2. 1.3.2 Key Features
      3. 1.3.3 Component Identification
      4. 1.3.4 Daughter Cards
        1. 1.3.4.1 Connecting the AM273x EVM to the AWR2243BOOST EVM
        2. 1.3.4.2 Connecting the AM273x EVM to the DCA1000
      5. 1.3.5 Security
      6. 1.3.6 Compliance
  6. 2Hardware
    1. 2.1 Board Setup
      1. 2.1.1 Power Requirements
        1. 2.1.1.1 Power Status LEDs
      2. 2.1.2 Push Buttons
      3. 2.1.3 Switches
      4. 2.1.4 LEDs
      5. 2.1.5 Boot Mode Selection
    2. 2.2 Hardware Description
      1. 2.2.1  Functional Block Diagram
      2. 2.2.2  Memory Interface
        1. 2.2.2.1 QSPI Interface
        2. 2.2.2.2 Board ID EEPROM
      3. 2.2.3  Ethernet Interface
      4. 2.2.4  Micro USB Interfaces
        1. 2.2.4.1 FTDI USB Interface
          1. 2.2.4.1.1 FTDI EEPROM Memory Device
        2. 2.2.4.2 XDS USB Interface
        3. 2.2.4.3 PC Connection
      5. 2.2.5  I2C Interface
        1. 2.2.5.1 I2C Connections
      6. 2.2.6  UART Interface
      7. 2.2.7  CAN Interfaces
        1. 2.2.7.1 CAN-A Interface
        2. 2.2.7.2 CAN-B Interface
      8. 2.2.8  JTAG Emulation
      9. 2.2.9  SPI Interface
      10. 2.2.10 MDI Interface
      11. 2.2.11 ePWM Interface
    3. 2.3 Connectors
      1. 2.3.1 60-Pin High Density (HD) FE Connector-1 (J1)
      2. 2.3.2 60-Pin High Density (HD) FE Connector-2 (J11)
      3. 2.3.3 MIPI 60-Pin Connector (J19)
      4. 2.3.4 Debug Connector 60-Pin (J7)
      5. 2.3.5 External Clock Option (J13, J1)
    4. 2.4 Mechanical Mounting of the PCB
  7. 3Additional Information
    1. 3.1 Trademarks
    2.     3.A Rev. C Design Changes
  8. 4Revision History

2.2.5 I2C Interface

The AM273x SoC supports three I2C interfaces: MSS_I2CA, RCSS_I2CA, and RCSS_I2CB. The MSS_I2CA lines are muxed out of the controller by default, while the RCSS_I2CA and RCSS_I2CB lines require pin muxing to be accessible. Information regarding the locations of the I2C modules for the AM273x can be found in the Pin Attributes section of the AM273x data sheet.

  • MSS_I2CA Interface:
    • Default pins:
      • MSS_I2CA_SDA: F16
      • MSS_I2CA_SCL: F18
    • Identify the EVM through the Board ID memory device (CAV24C02WE-GT3)
    • Read 1.2V, 1.8V, and 3.3V digital supply current sensors
    • Read 1.2V SRAM supply current sensor
    • Read temp sensor
    • Interface with 60 pin debug connector
      TMDS273EVM, TMDS273GPEVM, TPR12REVM MSS_I2CA Block Diagram Figure 2-16 MSS_I2CA Block Diagram
  • RCSS_I2CA:
    • Not available on the AM273x EVM by default
  • RCSS_I2CB:
    • Not available on the AM273x EVM by default