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

2.2.6 UART Interface

The AM273x is composed of four UART interfaces:
  • Two Main Subsystem Modules (MSS_UARTA and MSS_UARTB)
    • MSS_UARTA_RX and MSS_UARTA_TX are accessible through the XDS110 USB port (J8) via the XDS emulator.
    • MSS_UARTB_TX is available via the XDS110 USB port (J8) via the XDS emulator while MSS_UARTB_RX is not accessible by the default pin mux on the AM273x EVM.
  • One Radar Controller Subsystem Module (RCSS_UARTA)
    • RCSS_UARTA is not available in the standard hardware configuration of the AM273x EVM. However, this port can be accessed if resistors R160 and R164 are depopulated with resistors R156 and R159 populated with 0 ohm resistors. This alteration makes RCSS_UARTA_RX and RCSS_UARTA_TX accessible via the FTDI USB port (J8) as replacements of the DSS_UART interface.
  • One DSP Subsystem Module (DSS_UARTA)
    • DSS_UARTA_RX and DSS_UARTA_TX are accessible through the FTDI USB port (J10) via the FT4232HL UART - USB Bridge.

TMDS273EVM, TMDS273GPEVM, TPR12REVM UART Interface

Figure 2-17 UART Interface