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TAS3204 + USB

David Alexandrou
Intellectual 410 points

Other Parts Discussed in Thread: TAS3204

Hey there, 

Creating a board based on the EVM, with USB interface for programming - does the TAS automatically configure the usb host? Or do we need some special code in the eeprom attached to the USB to enable usb to i2c?

 

Cheers

David.

  • 0
    Intellectual 450 points

    You'll need the code stored in the eeprom of the evm board usb controller to let it work as a pps debugger for the tas3204.

  • 0 in reply to Christopher K.
    Intellectual 410 points

    Thanks Chris - I had a horrible feeling this was the case.

    So that software, does it exist in any obtainable form? And am I allowed to use it on my own board?

    Ultimately we just want to program the TAS from the GDE, and the USB interface of the EVM seemed the slickest way to do it. We're not the smartest bunch of yokels you see, so coming up with our own usb interface code for the TAS isn't really an option.

     

    I'll take any suggestions at this point. Even skipping the usb entirely if that's easier.

     

    Thanks again, and sorry for the hideously stupid questions :)

     

    ~David

  • 0 in reply to David Alexandrou
    Intellectual 410 points

    You know what, scrub all that.

    If I just burn the image file I've created to an eeprom, bung it on the board (assuming the TAS chip passes the io test mode first), is that all I need to do to have a functioning chip with our firmware running?

     

    Thanks

    David.

  • 0 in reply to David Alexandrou
    Intellectual 450 points

    Hello David,

    I don't know if the code for the EVM USB EEprom is available from TI in any form. If you can get it, send me a copy to ;)

    What you can do for debugging purposes, is to make a connection from a EVM Board to your own layout. You'll need the Reset, SDA and SCL lines coming from the USB Chip for that. I like the USB Interface very much, since you can see what the DSP is doing in it's registers and configure it during runtime. But for normal operation you won't need it. If you have a correct pps hex file in your boot eeprom the TAS will executed it after a reset and that's it. No other commands or voodoo is needed.

    Greetings

    Christopher