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Will a Tiva C series part ever get a DAC/I2S peripheral?

William Fleming
Intellectual 380 points
Other Parts Discussed in Thread: TM4C123GH6PM

Will a Tiva C series part ever get a DAC or I2S peripheral?

I think it is very odd that TI has parts such as the 200+ pin 120 MHz Tiva C 129 with LCD controller, but no DAC built-in at all.

I think it would be very odd to build something like a touchscreen system and not have an audio peripheral built-in.

While I know you could do audio over SPI/I2C, etc. Having these general peripherals available would be a good idea in future parts.

I can think of a least 2 competitor Cortex-M4 part series that have these features built-in.

  • 0
    Intellectual 310 points

    Hello,

    I'm not a TI employee to tell about the future of the Tiva C.

    But, Tiva C includes a lot of PWM outputs were you can use them (with a simple filter) as a DAC, then you can play sounds as you wish.

    you can download this document:

    http://www.ti.com/mcu/docs/litabsmultiplefilelist.tsp?sectionId=96&tabId=1502&literatureNumber=slaa116&docCategoryId=1&familyId=911

    (or search for document "SLAA116" if the link didn't work for any reason)

    it describes how to use the PWM as Analog Signal, the document is dedicated to MSP430, you can ignore the controller part and concentrate on the filter part as a reference.

    Also you can Play MP3 via SPI, I once used the VS1011E device (it is pretty old now) but you may find other new part numbers available in the market from "VLSI solutions" or other companies

    I'm using TM4C123GH6PM, it has already 4 SPI modules (SSI) available so you'll probably find a free one to be used with the Audio chip.

    regards,

    Mina