SLAU780 August   2018

 

  1.   MSP432E411Y-BGAEVM User's Guide
    1.     Trademarks
    2. 1 Board Overview
    3. 2 Power the MSP432E411Y-BGAEVM
      1. 2.1 Emulator Power
      2. 2.2 External 3.3-V Source Only
      3. 2.3 External 5-V Source Only
      4. 2.4 External 3.3-V and 5-V Source
      5. 2.5 Measure Current Consumption
    4. 3 Header Pinouts and Connections
      1. 3.1 J11 – External Power Connector
      2. 3.2 J6 – Power Rail Header
      3. 3.3 J7 – External Peripheral Interface Header
      4. 3.4 LCD Interface Header
      5. 3.5 J1, J2, J3, J4 – BoosterPack Interface Headers
      6. 3.6 J5 – Additional GPIO Pin Header
    5. 4 Communication Interfaces
      1. 4.1 Ethernet
      2. 4.2 USB-OTG
    6. 5 Programming Interfaces
      1. 5.1 JTAG
      2. 5.2 ETM Trace
      3. 5.3 BSL
    7. 6 Software Development
      1. 6.1 Software Description
      2. 6.2 Source Code
      3. 6.3 Tool Options
    8. 7 Schematics

5.3 BSL

The MSP432E411Y-BGAEVM supports BSL communication with the MSP432E411Y device through UART, I2C, or SPI BSL. Three switch banks (S3, S4, and S5) control which BSL interface is connected to the BSL connector, BSL. Move the corresponding switch for the desired BSL interface to the ON position, and move the other switches to the OFF position. Figure 12 shows the BSL switches and the BSL connector, with the switches in position to enable the SPI BSL interface. Table 7 shows which switch bank controls which BSL Interface. Switch bank S6 connects 4.7-kΩ resistors to the I2C BSL lines if I2C pullups are needed.

bsl-area-on-msp432e411y-bgaevm.pngFigure 12. BSL Area on MSP432E411Y-BGAEVM

Table 7. BSL Switch Bank Interfaces

Switch Bank BSL Interface
SW3 SPI
SW4 UART
SW5 I2C

When connecting to the MSP432E411Y device through the BSL connector:

  • If R15 is populated and R7 is not (the default), the BSL host supplies the 3.3-V rail.
  • If R7 is populated and R15 is not, the BSL host can sense the 3.3-V rail, which must be externally supplied to the MSP432E411Y-BGAEVM.