SPRUJE8 December   2024 AM2754-Q1

 

  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 Important Usage Notes
    3. 1.3 Kit Contents
    4. 1.4 Device Information
      1. 1.4.1 Security
    5. 1.5 Audio Expansion Connectors
  6. 2Hardware
    1. 2.1  Component Identification
    2. 2.2  Power Requirements
      1. 2.2.1 Power Input Using USB Type-C Connector
      2. 2.2.2 Power Status LEDs
      3. 2.2.3 Power Tree
      4. 2.2.4 Power Sequence
      5. 2.2.5 PMIC
    3. 2.3  Reset
    4. 2.4  Clock
    5. 2.5  Boot Mode Selection
    6. 2.6  Header Information
    7. 2.7  Push Buttons
    8. 2.8  Switches
    9. 2.9  Interfaces
      1. 2.9.1 Ethernet Interface
        1. 2.9.1.1 Ethernet Add-on Connectors
      2. 2.9.2 Audio Interfaces
        1. 2.9.2.1 Audio Clocking
        2. 2.9.2.2 McASP
        3. 2.9.2.3 MLB
    10. 2.10 AEC Mapping
      1. 2.10.1 Audio Expansion Connector 1
      2. 2.10.2 Audio Expansion Connector 2
    11. 2.11 Test Points
  7. 3Hardware Design Files
  8. 4Additional Information
    1. 4.1 If You need Assistance
    2. 4.2 Trademarks
  9. 5References
    1. 5.1 Reference Documents
    2. 5.2 Other TI Components Used This Design
  10. 6Revision History

2.2.5 PMIC

The AM275x EVM makes use of a Burton multirail power management IC (PMIC) (TPS6522435RAHRQ1). The PMIC integrates multiple supply rails to power the MCU, and other on-board peripherals.

AM2754, AM2754-Q1, AM2752, AM2752-Q1 PMIC Figure 2-7 PMIC

The PMIC supports wake-up from Am275x SoC wake-up I2C lines.

An independent voltage monitoring unit inside the PMIC monitors undervoltage and overvoltage on all internal supply rails and regulator outputs of the power delivery supply. All supplies are protected with current limiting and overtemperature warning and shutdown.

The PMIC features multiple GPIO pins which serve as boot pins and various interfaces post-boot.

The Table below shows the functions, boot configuration and default states of the GPIOs:

Table 2-2 PMIC GPIOs
GPIOx Function Boot Configuration
GPIO1 I2C SDA Wake-up N/A
GPIO2 I2C SCL Wake-up N/A
GPIO3 Push Button for Buck1/2 voltage Populated External pull-up to 1.8V: VDD_CORE = 0.85V (DEFAULT)
Non-populated External pull-up to 1.8V: VDD_CORE= 0.75V
GPIO4 PMIC Sleep signal (nSLEEP) N/A
GPIO5 SD card or eMMC I/O voltage select Digital high: 1.8V LDO2 output
Digital Low: 3.3V LDO2 output
GPIO6 Watchdog timeout Enable/Disable Populated External pull-up to 1.8V: Watchdog Timer disabled
Non-populated External pull-up to 1.8V: Watchdog timeout enabled