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

2.2.3 Clocking

The Ethernet LaunchPad uses a 25-MHz crystal (Y1) to drive the main MSP432E401Y internal clock circuit. Most software examples use the internal PLL to multiply this clock to higher frequencies up to 120 MHz for core and peripheral timing. The 25-MHz crystal is required when using the integrated Ethernet MAC and PHY.

The Hibernation module is clocked from an external 32.768-kHz crystal (Y3).