Figure 2-9. Onboard Mic Jumpers - Texas Instruments ADCx120EVM-PDK User Manual

www.ti.com
To configure the ADC for both onboard microphones, use the Onboard Microphones preset in the PPC3 GUI, or
copy and paste the following script in I2C master app:
#####On-Board MIC Config######
w 9c 02 81 #Wake up device and enable AREG
w 9c 01 01 #Software Reset
d 100 #Wait 100ms
w 9c 00 00 #Set page 0
w 9c 02 81 #Wake up device and enable AREG
d 10 #wait 10 ms
w 9c 0d 01 #Set Ch-3 data to ASI left slot 1
w 9c 22 41 #Set IN2M_GPO1 to PDCMLK output (Default 3.072MHz)
w 9c 2b 50 #Set IN2P_GPI1 to PDMDIN2 for channel 3 and 4
w 9c 73 A0 #Enable input Ch-1 and Ch-3
w 9c 74 A0 # Enable ASI Output Ch-1 and Ch-3 slots
w 9c 75 E0 # Power-up ADC, MICBIAS and PLL
SBAU359A – MAY 2019 – REVISED JUNE 2021
Submit Document Feedback

Figure 2-9. Onboard Mic Jumpers

ADCx120EVM-PDK, PCMD3140EVM-PDK Evaluation Module
Copyright © 2021 Texas Instruments Incorporated
Hardware Overview
9