Texas Instruments ADCx120EVM, User Manual, Page: 17 / 36

As shown in Figure 6-3 , make sure AVDD is selected for the MIC bias voltage and powered up.
Figure 6-3. MIC Bias Configuration
The default state for the TLV320ADCx120 is standby mode and, with the exception of the channel digital volume,
all device configurations must be done in standby mode. The TLV320ADCx120 does not provide a digital audio
output in standby mode.
Figure 6-4 shows how to change the mode from standby to active.
Figure 6-4. Standby to Active Mode
When active mode is enabled, any controls not configurable in active mode are grayed out. These controls can
be changed again when the device is brought out of active mode.
Figure 6-5 shows which controls are disabled.
Figure 6-5. Disabled Controls in Active Mode
Audio can now be captured on your PC using the audio program of your choice.
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SBAU359A – MAY 2019 – REVISED JUNE 2021
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ADCx120EVM-PDK, PCMD3140EVM-PDK Evaluation Module 17
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