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cc8520 to tas5717 iic addressing question

Forrest Seitz
Prodigy 50 points
Other Parts Discussed in Thread: TAS5717, CC8520, TAS5710, TAS5708, TAS5727, TAS5713, TAS5518

The 8520 configuring software with the tas5717 selected generates this line of code

w 36 1B 00 # set factory trim.

this is not consistent with the address of the tas5717 which is 54 or 56 depending on the state of the address line which we have tied low meaning it should be 54.  When the program initially installed the 5717 config file was absent from the audio devices subdirectory.  Any thoughts on what is going on in the configurator?

  • 0
    TI__Guru**** 189399 points

    Hi, Forrest,

    There is a forum dedicated to the cc8520 and similar products. Let me move your post there.

    This certainly seems like an error.

    -d2

  • 0 in reply to Don Dapkus
    Prodigy 90 points

    Hello Don,

    I work with Forrest. We inherited a project with bugs to fix. When I installed the  Purepath software, several .ppwadd files were created and placed in the audio_devices subdirectory. The tas5717 was not one of them. The previous engineer gave me a tas5717.ppwadd file, I don't know where he got it, and it has the bogus addressing.  When I changed the audio interface custom setup to Disabled, then the bogus addressing was ignored, and the receiver would pair with the transmitter. What I would like to know is where to get a good .ppwadd file, and why didn't the installer automatically create one?

    Thanks, Jim

  • 0 in reply to Jim Reed
    TI__Guru**** 189399 points

    Hi, Jim, Forrest,

    I apologize, I just realized that I moved your post to the incorrect forum. Let me move it to the wireless audio one, and I'll escalate it to the forum owner.

    I am sorry for the delay I caused...

    -d2

  • 0 in reply to Jim Reed
    TI__Mastermind 21125 points

    Hi Jim / Forrest. 

    The configurator only support the TAS5518,TAS5708, TAS5710,TAS5713 and TAS5727 'out-of-the-box' so any other ppwadd file you might have might either come directly from someone in TI or something that was done outside of TI.

    We only support a limited amount of devices out of the box to ease the test job on our end, otherwise the iterations and combinations would drown the development team. That being said, CC85xx can support any device that is either configured through I2C (within reason - limited by CC85xx internal memory) and/or up to 4 general purpose IOs. We have tried to document how this is added in the built in PurePath Wireless Configurator help system under the 'Audio Device Definition Files' section.

    The PPWADD files are xml files that can be edited and altered in any texteditor of choice (helps if it has xml syntaxing). If you are working with the TAS5717 you will either have to start from scratch or try fixing the one the previous engineer gave you. 

    Hope this helps.
    Regards,
    Kjetil