SBAU402 april   2023

 

  1.   AMC131M03 Evaluation Module
  2.   Trademarks
  3. 1Introduction
    1. 1.1 AMC131M03EVM Kit
    2. 1.2 AMC131M03EVM Board
  4. 2EVM Analog Interface
    1. 2.1 ADC Analog Input Signal Path
    2. 2.2 ADC External Clock (CLKIN) Options
  5. 3Digital Interface
    1. 3.1 SPI Communication
    2. 3.2 Connection to the PHI
    3. 3.3 Digital Header
  6. 4Power Supplies
  7. 5AMC131M03EVM Initial Setup
    1. 5.1 Default Jumper Settings
    2. 5.2 EVM Graphical User Interface (GUI) Software Installation
  8. 6AMC131M03EVM Operation
    1. 6.1 EVM GUI Global Settings for ADC Control
    2. 6.2 Register Map Configuration Tool
    3. 6.3 Time Domain Display Tool
    4. 6.4 Spectral Analysis Tool
    5. 6.5 Histogram Tool
  9. 7AMC131M03EVM Bill of Materials, PCB Layout, and Schematic
    1. 7.1 PCB Layout
    2. 7.2 Schematics
    3. 7.3 Bill of Materials

3.1 SPI Communication

The AMC131M03EVM supports limited interface modes as detailed in the AMC131M03 data sheet. The AMC131M03 uses a SPI-compatible interface to configure the device and retrieve conversion data. SPI communication on the AMC131M03 is performed in frames. Each SPI communication frame consists of several words. The word size is configurable as either 16 bits, 24 bits (default), or 32 bits by programming the WLENGTH[1:0] bits in the MODE register.

Additionally, the DRDY pin indicates when conversion data are available to be read by the controller. The DRDY_SEL[1:0] bits, DRDY_HIZ bit, and the DRDY_FMT bit in the MODE register control the behavior of the DRDY pin.

For this EVM, not all modes and functions for this SPI communication are supported. Functions not supported are disabled in the EVM GUI software. For more information about the SPI communication, see the AMC131M03 data sheet.