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TAS3308EVM-LC

Exidor Jones
Prodigy 40 points
Other Parts Discussed in Thread: PUREPATHSTUDIO, TAS3308

I am unable to get an audio output from my TAS3308EVM-LC. Will it drive a line input computer connection?

  • 0
    Intellectual 455 points

    Hi, you need to run the PurePathStudio GDE and run a script at reset to configure the operation of the PWM section. If you want it to run stand-alone with an external 5V supply then you need to look for my previous post about auto-init.

    Regards

     Neil Quarmby

    www.milton-electronics.com

  • 0 in reply to Neil A Quarmby
    Prodigy 40 points

    Could you elaborate a little. How do you set this configuration? Your not talking about the I2C configuration, are you? Can the audio output drive the computer audio line in so I can hear the output sound through the computer speakers? Thanks.

  • 0 in reply to Exidor Jones
    Intellectual 455 points

    Hi, I am talking about the I2C control traffic to configure the TAS3308. This is set by a script that was supplied on the CD with the board and is run by the PPS GDE when it resets the board to run the process flow.

    If you use the attached process flow then this should work without needing any scripts to run as it contains the right initialisation.

    The audio input and output are compatible with the PC audio interface so you can use them easily.

    Regards

     Neil Quarmby

  • 0 in reply to Neil A Quarmby
    Prodigy 40 points

    Thanks! That got it to work. What about custom components? Can these be constructed graphically or do you need to know C? Is there any way to modulate parameters like delay time or multiply by a changing constant? My application is guitar effects.

  • 0 in reply to Exidor Jones
    TI__Genius 14545 points

    Exidor Jones said:
    What about custom components? Can these be constructed graphically or do you need to know C?

    Exidor -

        Custom components need to be constructed in assembly.

     

    Exidor Jones said:
    Is there any way to modulate parameters like delay time or multiply by a changing constant?

    There are several PurePath Studio components that will allow you do to this graphically. Additionally, you can do this in assembly.

  • 0 in reply to dabuan
    Prodigy 40 points

    Can you elaborate on how I can modulate (gain or delay time) in PurePath Studio GDE? Also, I tried to build a state variable filter using integrators and I got an error message "cycle detected" due to unity feedback of the integrator. Is there a way around this?

  • 0 in reply to Exidor Jones
    TI__Genius 14545 points

    Exidor,

          The GDE doesn't support feedback in the graphical domain. One could write the entire assembly code to implement feedback. Reference the Mutli-Biquad Assembly Code for an example of how to do so.