I'm trying to use the AIC23 codec on the evaluation board as an A/D. I have already tried the dsk_app example which plays back a sound file from computer to the output headphone and it works fine. To try and test the A/D, I'm giving a DC voltage between 300mv to 1V to the Line in connector (right channel) and reading the receive buffers. All I get is values between -2 and 2 every time no matter what voltage I'm putting in. Am I missing something here?
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