Basic volume control on ADSPSC589 ez board.

I've attached a sample schematic from the example folder in sigmastudio which used to control volume and mute. In the schematic, there are 4 RCA inputs, 2 s/pdif inputs and 6 RCA outputs. I've used demo DXE (CCES) for ADSPSC589 given in the example folder of software module.

I have 1 RCA mic as input and 1 RCA speaker as output.

Can someone tell me how the processor knows which pins are input and which pins are output? That is, how and where to assign these pins as input and output. I've searched in manual but i couldn't find it. 

My second question is, if i want to use just 1 input and output how do i assign it in the code?

New here, kindly help. Thank you.

 

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  • I'm using 2 schematics to check if i'm getting output on one. And No, I haven't changed anything

    in the application framework. Below is the example which is already present in the examples folder. I've just changed hardware configuration from USBi to Aardvark as shown below.

    The other schematic is this one below, I've just unchecked the inputs  and reduced the mute block and outputs, since I've only 1 input and output source with me. 

    I'm not getting any output audio on both these schematics.

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