SBAU353 October   2021

 

  1.   Trademarks
  2. 1EVM Overview
    1. 1.1 ADS131A04EVM Kit
    2. 1.2 ADS131A04EVM Board
  3. 2ADS131A04EVM Quick Start Guide
  4. 3EVM Analog Interface
    1. 3.1 ADC Analog Input Signal Path
    2. 3.2 ADC External Clock (XTAL1/CLKIN and XTAL2) Options
  5. 4Digital Interface
    1. 4.1 SPI Communication
    2. 4.2 Connection to the PHI
    3. 4.3 Digital Header
    4. 4.4 LaunchPad Connectors
  6. 5Power Supplies
  7. 6ADS131A04EVM Initial Setup
    1. 6.1 Default Jumper Settings
    2. 6.2 EVM Graphical User Interface (GUI) Software Installation
  8. 7ADS131A04EVM Software Reference
    1. 7.1 EVM GUI Global Settings for ADC Control
    2. 7.2 Register Map Configuration Tool
    3. 7.3 Time Domain Display Tool
    4. 7.4 Spectral Analysis Tool
    5. 7.5 Histogram Tool
  9. 8ADS131A04EVM Bill of Materials, PCB Layout, and Schematic
    1. 8.1 Bill of Materials
    2. 8.2 PCB Layout
    3. 8.3 Schematic
  10. 9References

4.2 Connection to the PHI

The ADS131A04EVM board communicates with the PHI through a shrouded, 60-pin connector, J5. There are two round standoffs next to J5 with Phillips-head screws. To connect the PHI to the EVM, remove the screws, attach the PHI to the EVM, and replace the screws into the standoffs. The screws secure the EVM to the PHI and ensures the connection between the boards.

Table 4-1 lists the different PHI connection and their functions.

Table 4-1 PHI Connector Pin Functions
PHI Connector Pin NamePHI Connector PinFunction
EVM_RAW_5VJ5[2]Power-supply source for the analog section of the EVM
GNDJ5[3]Ground
M0J5[6]SPI configuration mode select pin
M1J5[8]SPI word size select pin
M2J5[10]Hamming code enable pin
DINJ5[18]Serial data input for the ADS131A04
CSJ5[22]Chip-select for the ADS131A04; active-low
SCLKJ5[24]Serial data clock for the ADS131A04
SCLKJ5[28]Serial data clock for the ADS131A04
DRDYJ5[30]Data-ready for the ADS131A04; active-low
DOUTJ5[36]Serial data output for the ADS131A04
RESETJ5[46]Conversion system reset for the ADS131A04; active-low
WPJ5[49]Write protection for EEPROM
3V3_IOVDDJ5[50]Power-supply source for the digital section of the EVM
SDAJ5[56]I2C serial data for the EEPROM used to identify the EVM
SCLJ5[58]I2C serial clock for the EEPROM used to identify the EVM
EVM_ID_PWRJ5[59]Power-supply source for the EEPROM used to identify the EVM
GNDJ5[60]Ground