Figure 2-9. Onboard Mic Jumpers
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
Hardware Overview
SBAU398 – MARCH 2022
ADCx120Q1EVM-PDK, PCMD3140Q1EVM-PDK Evaluation Module
9
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