ADAU196XAZ test, i can't get a digital input 24bit signal by the sigmastudio or the ARWB

HI

i bought the board EVAL-ADAU196XAZ, and want to get a pure analog output using this board.

the inportant thing is to generate a 24bit digital input signal, i see other DAC use the sigmastudio to program the board easily to get a input signal.

but in this board EVAL-ADAU196XAZ, when i use the sigmastudio, there is no schematic workspace, so can't add the input.

the ARWB can only control the register of the chip ADAU1966A, this software can't generate a 24bit digital input signal.

my question is how can we get a digital input to the EVAL-ADAU196XAZ, can ypu help provide some software to help generate the digital input?

thanks

Shangzheng

Parents
  • +1
    •  Analog Employees 
    on Feb 27, 2020 3:06 PM

    Hello Shangzheng,

    The SigmaStudio interface is only for controlling and setting the registers. Once all the settings are correct for your application it is easy to copy all the register settings so your system controller can properly program the part. This is the use of SigmaStudio with this part to give you real time control of the part.

    Audio has nothing to do with SigmaStudio. There is no way to get audio in or out. This is true even with a DSP.

    This evaluation board does not have an analog input. All the inputs are digital. The easiest way is to use an S/PDIF signal and send that to the board. There are provisions on the board to route this audio to all the outputs or only to selected outputs.

    The board can also be setup to receive an I2S or a TDM signal from some other digital source. This is often a DSP evaluation board. Do you have any of our DSP evaluation boards?

    I have also attached an updated user guide that is still a preliminary guide. It covers the old revision in the first half of the document and the new revision in the second half of the document.

    Dave T

    PDF

  • Hi Dave

    thank you for your reply, I still have some question.

    our main goal is to use this EVAL-ADAU196XAZ board to get a high quality sinewave output signal about 3-20KHz which is more than 90dB.  and we hope use the sigmastudio or the ARWB(automated register window building) to control theregister, and  to get this high quality sinewave output.

    1. in my old experience, in the sigmastudio once we put a chip model to the workspace, there will generate a schematic function in the workspace, so that we can choose the IO(see the below picture), but for the ADAU1966A, there is no schematic function in the workspace,

     

    2. for the software ARWB(automated register window building), we hope this software can control the register to get a analog output, means write the 24bit digital code directly to the register, then get the digital ouput.  but we can see, the ARWB seems can only change some control register, still no help to generate the sinewave output,  we want this board get a sinewave analog output without other input.

    3. if the sigmastudio and the ARWB really can't help, what about use the matlab to generate a 24bit code, and then write this code to the register in EVAL-ADAU196XAZ,  so that the board can get a high quality output sinewave signal, do you have some idea about how to connect the board with the matlab?

    all we want is to using this board get a pure analog sinewave output, what about your idea.

    thanks for your help

    Shangzheng

Reply
  • Hi Dave

    thank you for your reply, I still have some question.

    our main goal is to use this EVAL-ADAU196XAZ board to get a high quality sinewave output signal about 3-20KHz which is more than 90dB.  and we hope use the sigmastudio or the ARWB(automated register window building) to control theregister, and  to get this high quality sinewave output.

    1. in my old experience, in the sigmastudio once we put a chip model to the workspace, there will generate a schematic function in the workspace, so that we can choose the IO(see the below picture), but for the ADAU1966A, there is no schematic function in the workspace,

     

    2. for the software ARWB(automated register window building), we hope this software can control the register to get a analog output, means write the 24bit digital code directly to the register, then get the digital ouput.  but we can see, the ARWB seems can only change some control register, still no help to generate the sinewave output,  we want this board get a sinewave analog output without other input.

    3. if the sigmastudio and the ARWB really can't help, what about use the matlab to generate a 24bit code, and then write this code to the register in EVAL-ADAU196XAZ,  so that the board can get a high quality output sinewave signal, do you have some idea about how to connect the board with the matlab?

    all we want is to using this board get a pure analog sinewave output, what about your idea.

    thanks for your help

    Shangzheng

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