SPRADG5 January   2024 DRA821U , DRA821U-Q1 , TDA4AL-Q1 , TDA4VH-Q1 , TDA4VL-Q1 , TDA4VM , TDA4VM-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1UART Introduction
    1. 1.1 Jacinto 7 UART Overview
    2. 1.2 Jacinto 7 UART Features
    3. 1.3 Jacinto 7 UART Functional Introduction
  5. 2UART Usage Overview
    1. 2.1 WKUP_UART0 Usage
    2. 2.2 MCU_UART0 Usage
    3. 2.3 MAIN_UARTx Usage
  6. 3Log Level Design on Software Module
  7. 4Change UART Instance
    1. 4.1 Change MAIN_UARTx for MAIN Domain
    2. 4.2 Set Standalone UART Port for DSP/MCU
  8. 5Summary
  9. 6References

4 Change UART Instance

Normally, the default PINs configurations of MCU_UART0 and WKUP_UART0 serial ports are not suggested to be modified during the customers’ hardware design stage. The reason is that ROM code uses the default pin setting of MCU_UART0 when doing OSPI burning, and SYSFW uses the default pin setting in WUKP_UART0. However, due to PIN conflicts and other reasons, MAIN_UARTX is often changed to a new serial port. Moreover, in multi-core debugging, a separate MAIN_UARTX serial port is often required to be configured for the DSP/MAIN_R5F core for debugging purpose.