I need some further information on the audio digital to analog converter eval board ADAU1966A.

I need some further information on the audio digital to analog converter eval board ADAU1966A. 

 

I want to know if I use the board for 16 loudspeakers 2W, 8 ohm, do I need amplifiers? how many? 

 

I also want to know what language should I use to program the board? 

 

How much memory does the board have? 

 

Is it possible with this board to record the signal using an array of microphones, convert it to digital, process it in real time and then convert to analog signal for loudspeakers? 

 

Is it possible to send signal to a selected set of analog outputs?

  • Hello Nasim,

    The evaluation board is only to evaluate the ADAU1966A. That part is only a 16 channel DAC with no amplification at all. You will need 16 channels of power amplification.

    The board does not require any language to "program". It can operate the part in standalone mode where you do not need a microcontroller. Then you can also download and use the ARWB program to be able to set the control registers in the part. The third option is to download SigmaStudio and use that program to control the part. This is actually the easiest way. Both of these programs use the USBi which comes with the eval board and is used to communicate to the part using USB.

    Then the fourth option is to use your own microcontroller that would communicate using SPI or I2C and in that case you use the language you are used to using.

    There is no memory on the board.

    This part is only a 16 channel DAC. It does not have any ADCs and no DSP to process signals. You will need to add many channels of ADC but you will also need mic preamps and then a DSP. The DSP can do the processing and routing of the signals and then output the data to the ADAU1966A using I2S or TDM.

    We do have some parts that have built in mic preamps and ADCs. The ADAU1372 has four of them. It also has two DACs but you would not have to use them. There is the AD1974 that has four ADCs but no preamps.


    For a DSP the ADAU1452 is a very powerful DSP designed for audio. There is also the ADAU1442. Depends on what you need.

    Thanks,

    Dave T

  • My PC run windows 8, 64-bit version. I installed Register Window builder software but it didn't find the device. Do I need to use the 64-bit version of DPlnst.exe and where can I get it?

  • Hello Nasim,

    Unfortunately, Windows 8 may be the problem here. We never supported Windows 8 and we have yet to migrate to Windows 10.

    You could try to install SigmaStudio since that installation package does a good job of installing the drivers for the USB interface. See if you can then see the USBi interface.

    Dave T

  • I tried another laptop with windows 7-64 bit, still not found the device. I am not sure what is the problem

  • Hello Nasim,

    OK, I need to get some more detail then. Let me walk through the procedure to connect to a board.

    Start up the ARWB program, You will see a blank window and at the bottom it says "connecting" but this message means nothing at this point.

    Then you need to go to the file menu and open a register window XML file. I am not sure where the installer will put these but I think it will default to the location where they were installed. They should be in the program folders for the ARWB program. Select the ADAU1966A file and at that time you will see the register controls load in and at the bottom you should see the message: "USBi Connected".

    At this point you should be able to communicate with the part.

    Let me know how far you got in this procedure.

    Thanks,

    Dave T