SPRUJA9 January   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1.     Preface: Read This First
      1. 1.1.1 Sitara MCU+ Academy
      2. 1.1.2 If You Need Assistance
    2. 1.1 Introduction
    3. 1.2 Kit Contents
    4. 1.3 Device Information
  6. 2Hardware
    1. 2.1 Component Identification
    2. 2.2 Power Requirements
      1. 2.2.1 Power Tree
    3. 2.3 Functional Block Diagram
    4. 2.4 Header Information
    5. 2.5 Test Points
    6. 2.6 Interfaces
      1. 2.6.1 Automotive Ethernet PHY
      2. 2.6.2 Automotive Ethernet PHY Strapping Resistors
    7. 2.7 Integration Guide
      1. 2.7.1 Board Dimensions
      2. 2.7.2 DF40GB Connector
      3. 2.7.3 Mounting Holes
      4. 2.7.4 MATEnet Ethernet Connector
  7. 3Hardware Design Files
  8. 4Additional Information
    1. 4.1 Trademarks
  9. 5References
    1. 5.1 Reference Documents
    2. 5.2 Compatible Sitara™ MCU AM2x EVMs
    3. 5.3 Other TI Components Used in This Design

2.2.1 Power Tree

The DP83TG720-EVM-AM2 power is supplied from the main Sitara AM2x EVM via the DF40GB connector.

3.3V (VDDIO) is connected to pin 44 and 46 on the DF40GB connector, and is passed to the 3.3V source inputs on the DP83TG720S-Q1 Automotive Ethernet PHY through a pair of ferrite beads (one per supply net).

2.5V (VDD_2V5) is connected to pins 4 and 6 on the DF40GB connector, stepped down to 1.0V by the TLV755P LDO, and is passed to the 1.0V source inputs on the DP83TG720S-Q1 Automotive Ethernet PHY through a ferrite bead.

Figure 3-3 shows the power connections of DP83TG720-EVM-AM2.

GUID-7BA09EC2-68BA-4180-BEA7-B4EE224C9B73-low.png Figure 2-3 Power Tree