SPRUJ86C October   2023  – August 2024 AM263P2 , AM263P2-Q1 , AM263P4 , AM263P4-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
      1.      Preface: Read This First
        1. 1.1.1.1 Sitara MCU+ Academy
        2. 1.1.1.2 Important Usage Notes
    2. 1.2 Kit Contents
    3. 1.3 Device Information
      1. 1.3.1 HSEC 180-pin Control Card Docking Station
      2. 1.3.2 Security
  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  Functional Block Diagram
    4. 2.4  Reset
    5. 2.5  Clock
    6. 2.6  Boot Mode Selection
    7. 2.7  JTAG Path Selection
    8. 2.8  Header Information
    9. 2.9  GPIO Mapping
    10. 2.10 Push Buttons
    11. 2.11 Interfaces
      1. 2.11.1  Memory Interface
        1. 2.11.1.1 OSPI/QSPI
        2. 2.11.1.2 Board ID EEPROM
      2. 2.11.2  Ethernet Interface
        1. 2.11.2.1 Control Card Ethernet Routing
        2. 2.11.2.2 On Board Ethernet PHY
        3. 2.11.2.3 LED Indication in RJ45 Connector
        4. 2.11.2.4 Ethernet Add On Board Connector
      3. 2.11.3  I2C
      4. 2.11.4  Industrial Application LEDs
      5. 2.11.5  SPI
      6. 2.11.6  UART
      7. 2.11.7  MCAN
      8. 2.11.8  FSI
      9. 2.11.9  JTAG
      10. 2.11.10 Test Automation Header
      11. 2.11.11 LIN
      12. 2.11.12 MMC
      13. 2.11.13 ADC and DAC
    12. 2.12 HSEC Pinout and Pinmux Mapping
  7. 3Hardware Design Files
  8. 4Additional Information
    1. 4.1 If You Need Assistance
    2. 4.2 Trademarks
  9. 5Related Documentation
    1. 5.1 Supplemental Content
      1.      5.1.A E1 Board Modifications
      2.      5.1.B E2 Design Changes
      3.      5.1.C A Design Changes
  10. 6References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design
  11. 7Revision History
  12. 8Revision History

2.11.13 ADC and DAC

The AM263Px Control Card supports 24 ADC signal channels that are mapped for the AM263Px SoC and terminated to the HSEC connector. All ADC signals are ESD protected (TPD4E001DBVR).

AM263P1, AM263P1-Q1, AM263P2, AM263P2-Q1, AM263P4, AM263P4-Q1 ADC HSEC Connections Figure 2-35 ADC HSEC Connections

There are two muxes (TMUX1136DQAR) that determine the pathing of ADC signals to and from the HSEC Connector.

Table 2-28 ADC MUX Select Logic
MUX Select Signal Condition Function Description
ADC1_MUX_SEL SEL Signal HIGH S1A → D1 HSEC_ADC0_AIN0 selected
S2A → D2 HSEC_ADC0_AIN1 selected
SEL Signal LOW S1B → D1 HSEC_DAC_OUT selected
S2B → D2 HSEC_DAC_OUT selected
ADC2_MUX_SEL SEL Signal HIGH S1A → D1 HSEC_ADC4_AIN0 selected
S2A → D2 HSEC_ADC4_AIN1 selected
SEL Signal LOW S1B → D1 ADC_CAL0 selected
S2B → D2 ADC_CAL1 selected

There are three switches that are used to configure the reference voltages for the ADC and DAC.

AM263P1, AM263P1-Q1, AM263P2, AM263P2-Q1, AM263P4, AM263P4-Q1 ADC Switch Routing Figure 2-36 ADC Switch Routing
  • The VREF Switch (SW7) is a single pole double throw switch that controls which 1.8V reference is used for ADC and DAC.
    Table 2-29 VREF Switch
    VREF Switch Position Reference Selection
    Pin 1-2 On board 1.8V Reference (REF3318AIDBZT)
    Pin 2-3 HSEC VREF
  • The DAC VREF Switch (SW8) is a single pole double throw switch that controls the input for the DAC VREF inputs of the AM263Px SoC.
    Table 2-30 DAC VREF Switch
    DAC VREF Switch Position Reference Selection
    Pin 1-2 AM263Px on-die LDO
    Pin 2-3 Output of VREF Switch
  • The ADC VREF Switch (SW9) contains two single pole double throw switches that control the input for the ADC VREF inputs of the AM263Px SoC.
    Note: SW9.1 must be in the Pin 1-2 position and SW9.2 must be in the pin 4-5 position for AM263Px MCU+ SDK ADC Examples to function properly.
    Table 2-31 ADC VREF Switch
    ADC VREF Switch Position Reference Selection
    Pin 1-2 OPEN - Allow for reference to be AM263Px on-die LDO reference
    Pin 2-3 Output of VREF Switch
    Pin 4-5 OPEN - Allow for reference to be AM263Px on-die LDO reference
    Pin 5-6 Output of VREF Switch