Quick Start - Texas Instruments PCMx140Q1EVM-PDK User Manual

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As shown in Figure 3-4, the GUI opens to the Audio Config tab.
Before changing any parameters, check the lower left corner of the PPC3 window, as shown in
verify that the EVM is connected. If there is not an EVM detected, then the text reads PCMx140Q1 offline. If the
EVM is detected, then a Connect button appears. Clicking this button connects the hardware.
When the hardware is connected, the Connect button changes to read Disconnect, and the device is ready to be
configured.

3.2 Quick Start

Configure the AC-MB for the USB audio (TDM) and the PCMx140Q1EVM for the onboard microphone input.
All configurations for this example are done on the audio configuration tab. In the Audio Configuration block in
the lower right portion of the audio configuration tab (as shown in
enable the ASI output channel 1.
As shown in Figure 3-7, select AVDD for the MIC bias voltage and power-up the MIC bias.
The default state for the PCMx140Q1 is standby mode and, with the exception of the channel digital volume, all
device configurations must be done in standby mode. The PCMx140Q1 does not provide a digital audio output in
standby mode. Figure 3-8
SBAU443 – NOVEMBER 2023
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Figure 3-4. Audio Config Tab
Figure 3-5. Hardware Connect
Figure 3-6. Audio Configuration
Figure 3-7. MIC Bias Configuration
shows how to change the mode from standby to active.
Figure 3-8. Standby to Active Mode
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Figure 3-6), select a word length of 16 bits, and
PCMx140Q1EVM-PDK Evaluation Module
Software
Figure 3-5, to
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