Running the ADC In / DAC Out Example Application
CDB47xxx User’s Manual
DS886DB9
Copyright 2012 Cirrus Logic, Inc
4-4
4.2.2.1 Audio In via ADC
To deliver analog audio data to the DSP via the CS470xx ADCs, drag the Audio In block to the workspace
and select an input configuration that includes ADC. The ADC2 input includes a 5:1 input multiplexer that
is controlled by the pull-down list, ADC2 Ch 3+4 Input Sel, shown in
Figure 4-4. ADC2 Device Properties.
The ADC2 block's terminal names will change to match the physical input terminals that are now active.
For the configuration shown in
, “Ain_2a” and “Ain_2b” are active. If the selection was “Ain_3A/
3B” instead, the terminals would say “Ain_3a” and “Ain_3b.” On the CDB47xxx board, the microphone
input is connected to terminal 6A.
