SBAU465 March   2026

 

  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 Recommended Hardware
    2. 2.2 USB Quick Start
    3. 2.3 Windows USB Audio Mode
    4. 2.4 Board Setup By Mode
      1. 2.4.1 USB Mode
      2. 2.4.2 Optical Audio Mode
      3. 2.4.3 PSIA Mode
      4. 2.4.4 USB Control Mode
    5. 2.5 Hardware Configuration
      1. 2.5.1 Audio Controller
      2. 2.5.2 USB and Optical
      3. 2.5.3 EVM Power Tree
      4. 2.5.4 EVM Audio Device
        1. 2.5.4.1 EVM Audio Device Headers
        2. 2.5.4.2 PCM175x Output Filter
        3. 2.5.4.3 DIP Adapter Footprint
  9. 3Software
    1. 3.1 Software Overview
      1. 3.1.1 Register Write Operation
      2. 3.1.2 Board Configuration for Software Mode
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1.     Trademarks
  12. 6Related Documentation
  13. 7Revision History

1.3 Specification

The PCM175xEVM allows users to quickly begin evaluating the performance of the 24-bit 192kHz audio DAC, the PCM175x. The board comes ready to use and supports audio data via USB, Optical S/PDIF, and PSIA connection for measurement and debug. The configuration for the PCM1754 device is done through the various Multi-Function pins (FMT, MUTE, DEMP). The PCM1753 is controlled through a three-wire (ML, MC, MD) serial control port that supports register-write functions.

When using the board with a specific audio source, the on-board configuration jumpers must be connected and disconnected as described in the relevant audio source section. For USB Audio, the onboard XMOS controller performs USB to I2S conversion, and is recognized as a USB 2.0 compatible audio device in Windows 10. The board also accepts and can run on USB power, with the option to use an external DC 5V supply.