ADAU1761 mic input settings

Question

Hello all, 
 I am trying to give audio input through the microphone input ports (IN1 and IN2) of the EVAL-ADAU1X61EBZ board, but I am not able capture any signal from the output. 
 Anyone please tell me the settings/configuration needs to be done in order to give input through the microphone and to capture the output. 
 Thanks in advance, 
 Regards, 
 Vidhya

KJBob · Accepted Answer

Hello, 
 Sorry it's still not working for you. I did not change any jumpers to get my board working as above, but perhaps your board's jumpers have been disturbed. Please check the following: 
 
 Jumpers described on Page 3 of the EVAL-ADAU1761Z manual. 
 If using electret condenser mic elements*, jumpers J15 and J18 need to be in place. You also need to enable the MIC Bias (lower right corner of the Record Input Signal Path config screen). 
 
 * Note: "Packaged" condenser mics (enclosed and ready to go on-stage) need "phantom power", usually a much higher DC voltage than the eval board provides. These cannot be directly connected to the eval board. 
 Does the eval board work with other inputs (such as a stereo input from a iPod or similar source to the IN 1 jack? It's a good idea to review the eval board's schematic diagram, comparing it to the ADAU1761 data sheet, to see how things should connect. For example, a single-ended mic needs to be connected "hot" to the ring (not the tip) of the stereo input jack IN1 or IN2. 
 Best regards, 
 Bob)

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ADAU1761 mic input settings