SLVUC20A March   2021  – August 2022 LP876242-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Getting Started
    1. 2.1 The GUI Tool
  5. 3EVM Details
    1. 3.1 Terminal Blocks
    2. 3.2 Test Point Descriptions
    3. 3.3 Configuration Headers
    4. 3.4 Connectors
    5. 3.5 DIP Switches
    6. 3.6 EVM Control and GPIO
  6. 4Customization
    1. 4.1 Changing the Communication Interface
  7. 5Schematic, Layout, and Bill of Materials
  8. 6Additional Resources
  9. 7Revision History

4.1 Changing the Communication Interface

The default settings for communication with the PMIC is SPI. Changing to I2C requires a removal of jumpers from J18, J24 as highlighted in red in Figure 4-1. At J18, the jumper on SPI_EN connects the microcontroller to the SPI bus to which the PMIC is connected. The SPI does not have a device ID and therefore the chip select is used to determine which PMIC receives and responds to commands on the SPI bus.

Figure 4-1 Interface Settings for I2C Communication