SLAU748B October   2017  – September 2018 MSP432E401Y

 

  1.   SimpleLinkrep%#8482; Ethernet MSP432E401Y Microcontroller LaunchPad™ Development Kit (MSP-EXP432E401Y)
    1.     Trademarks
    2. 1 Board Overview
      1. 1.1 Kit Contents
      2. 1.2 Using the Ethernet LaunchPad Development Kit
      3. 1.3 Features
      4. 1.4 BoosterPack Plug-in Modules
      5. 1.5 Specifications
    3. 2 Hardware Description
      1. 2.1 Functional Description
        1. 2.1.1 Microcontroller
        2. 2.1.2 Ethernet Connectivity
          1. 2.1.2.1 RJ-45 Connections
        3. 2.1.3 USB Connectivity
        4. 2.1.4 Motion Control
        5. 2.1.5 User Switches and LEDs
        6. 2.1.6 BoosterPack Plug-in Modules and Headers
          1. 2.1.6.1 BoosterPack Plug-in Module Interface 1
          2. 2.1.6.2 BoosterPack Plug-in Module Interface 2
          3. 2.1.6.3 Breadboard Connection
          4. 2.1.6.4 Other Headers and Jumpers
        7. 2.1.7 Serial Bootloader
      2. 2.2 Power Management
        1. 2.2.1 Power Supplies
        2. 2.2.2 Low Power Modes
        3. 2.2.3 Clocking
        4. 2.2.4 Reset
      3. 2.3 Debug Interface
        1. 2.3.1 XDS-110 Debug Interface
        2. 2.3.2 External Debugger
        3. 2.3.3 Virtual COM Port
    4. 3 Software Development
      1. 3.1 Software Description
      2. 3.2 Source Code
      3. 3.3 Tool Options
      4. 3.4 Programming the Ethernet LaunchPad Development Kit
    5. 4 PCB Schematics
  2.   Revision History

2.1.2.1 RJ-45 Connections

To improve EMI performance, use a metal-shielded RJ-45 connector with the shield connected to chassis ground.

Bob Smith termination to the RJ-45 connector involves 75-Ω termination resistors connected to the unused differential pair connections on the RJ-45 connector. Bob Smith termination is used to reduce noise that results from common-mode current flows and to reduce susceptibility to noise from unused wire pairs on the RJ-45.

NOTE

Power Over Ethernet (PoE) applications require a modified Bob Smith termination, which consists of DC-blocking capacitors in series with the 75-Ω termination resistors.