SLAU912 January   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Jumper Information
    3. 2.3 Setup
    4. 2.4 Test Points
    5. 2.5 High-Current Optional Stage
  9. 3Software
    1. 3.1 GUI Installation
    2. 3.2 Software Development
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks

2.3 Setup

After the power and jumper configurations are set up per Figure 3-1 or Figure 3-2, and the DAC814xxEVM GUI is fully installed, connect the USB cable from the DAC81404EVM USB port to the local machine.

Once all the connection is done, power up the DAC81404EVM hardware as described in the power requirement section 3-1.

For basic DAC81404 device check, use one of the following sequences in the DAC814xxEVM GUI:

  • From DAC81404 Register page

    • Write 0x0A04 to the SPI_CONFIG (0x03) register to power up the device

    • Write 0x0000 to the GEN_CONFIG (0x04) register to power up the internal reference

    • Write 0x0000 to the DAC_PWDWN (0x09) register to power up the DAC outputs

    • Write 0x7FFF to the DACA (0x10) register to configure the DAC_OUT to 2.5-V on DAC_OUTA (TP5)

  • From DAC81404 High Level page

    • Device Power Down: select Active mode to power up the device

    • Reference Power-Down: select Activate internal ref to power up the internal reference

    • DACA Channel Power-Down: select Activate channel to power up the DAC output

    • DACA_DATA: write 0x7FFF to get 2.5-V on DAC_OUT (TP5)

The default voltage range for the DAC81404 is 0 V to 5 V. Configure the voltage range by modifying the "DACx Voltage Range" control on DAC814xxEVM GUI High Level page, or by writing to the "DACx_RANGE" register in the Low Level page as shown in section 2-2.