SNLU357 April   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Setup
    3. 2.3 Interfaces
  9. 3Software
    1. 3.1 Software Description
    2. 3.2 Software Installation
    3. 3.3 Programming Options
  10. 4Implementation Results
    1. 4.1 Performance Data and Results
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Known Hardware or Software Issues
    2. 6.2 Trademarks
    3. 6.3 Terminology
  13. 7Related Documentation
    1. 7.1 Supplemental Content
  14. 8References

2.2 Setup

The DP83826AEVM default header configuration assumes the user is supplying power to the 5V-12V banana jack or turret input. If the user wants to power the EVM from external sources, power can be supplied directly to pin 2 of J7 (VDDA), J8 (VDDIO), or J9 (Fiber optic transceivers). J23 (5V) is used to supply LDO and PHY using an external 5V power supply. The on-board MSP430 is powered through the USB micro-B connector.

If standalone USB operation is desired, place a jumper on J23 (USB_VBUS). After connection, the DP83826A and MSP430 draw power from the USB micro-B receptacle without any external power supply required. Please note that standalone USB operation can cause issues with USB to MDIO register access. If register access is required, TI recommends powering the DP83826AEVM using the 5V-12V banana jack supply.