Figure 2-9. Onboard Mic Jumpers - Texas Instruments ADC 120EVM-PDK Series User Manual

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To configure the ADC for both onboard mics, 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
SBAU359 – DECEMBER 2020
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Figure 2-9. Onboard Mic Jumpers

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