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

4.4 Reset

Figure 4-5 shows the reset architecture of the AM243x LaunchPad.

GUID-20210719-CA0I-3FQ1-Q16M-LD63GP77TM2Z-low.png Figure 4-5 Reset Architecture

The SoC has the following resets:

  • MCU_PORz is the power ON/Cold Reset input for MCU and MAIN domain
  • PORz_OUT is the power ON reset status output from MAIN and MCU domain
  • MCU_RESETz is the warm reset input for MCU domain
  • MCU_RESETSTATz is the warm reset status output for the MCU domain
  • RESET_REQz is the warm reset input for the MAIN domain
  • RESETSTATz is the warm reset status output for the MAIN domain

Three push button switches are available to provide reset for MCU_PORz, MCU_RESETz and RESET_REQz as seen in Section 3.2.

MCU_PORz signal is provided by the outputs of a voltage monitor IC (TPS386000RGPR) for the core and peripheral voltages where the enable of this voltage monitor is controlled by the PORz signal from the test automation header or push button switch (SW1).

MCU domain warm reset (MCU_RESETz) is provided from a push button switch (SW2)

Main domain warm reset (SoC_RESET_REQz) is provided by the Warm Reset signal from the test automation header or a push button switch (SW3).

Upon Power on Reset, all peripheral devices connected to MCU domain get reset by MCU_RESETSTATz.

One User input interrupt is connected to one of the GPIO of SoC.