• Bypass the SigmaDSP in ADAU1781


    I'm looking to replace an obsolete codec (AT73C213 for reference) and the ADAU1781 seems to be a good candidate.

    However, I do not need all the signal processing features present in this chip.

    Basically, I need an I2S interface to a DAC which…

  • How to connect unused ADAU1781 pins?


    my ADAU1781 project use neither the mic inputs nor stereo line out nor the beep input.

    Question: may I left LMIC, LMICP, RMIC, RMICP, BEEP, AOUTL, AOUTR unconnected?

    I just saw, that LMICP and RMICP can be directly feed from CM, so the question…

  • ADAU1781 as I2S codec with Raspberry Pi GPIO pins

    I see in the ADAU1781 driver wiki page that I2S communication is supported. I wanted to ask what steps I would need to take to make this work with a Raspberry Pi. The end goal is to use the ADAU1781 as an audio I/O hat, working through the GPIO pins that…

  • Is it possible to attach 4 digital mics on a ADAU1781?

    Hi there,

    the ADAU1781 has two analog microphone inputs LMIC and RMIC which can also be used with two digital microphones, each. My question: Is it possible to use all 4 channels within the processor or am I limited to stereo on input MICD1 or MICD2…

  • How to Compile and Where to Install Linux Codec Drivers ADAU1781

    Hi, I was looking for documentation on how to install the linux codec drivers for the ADAU1781 and I couldn't find any. There is a link to the drivers on the wiki that I found but they are in the form of .c and .h files, and I am unfamiliar with installing…

  • RE: how can i save my program(Adau1781) in ext E2prom


    Since there is no self-boot feature in the ADAU1781, you will need a microcontroller. We have a fairly complete tutorial available here: http://ez.analog.com/docs/DOC-1806

  • How to match dtoverlay machine driver with ADAU1781 linux driver RPi

    Hi, I'm trying to set up the ADAU1781 as an I2S audio codec with the Raspberry Pi, providing audio input and output via the GPIO. To do this I am aware I need a machine driver as well as the linux driver included with the 1781. I have done some research…

  • Between ADAU1761 and ADAU1781, are there any difference in serial data port ?

    I have question about serial data port.Plese let me cofirm below.

    Are there any difference in serial data port between the ADAU1761 and the ADAU1781 ?

    When we use the ADAU1761's I2S in slave mode,
    is it OK that the serial data clocks BCLK and LRCLK…

  • Setting up ADAU1781 to work as an audio codec through Raspberry Pi's GPIO pins

    I would like to create an i2s audio i/o hat for the Raspberry Pi using the ADAU1781. The end product has the following requirements:

    -Works through the Pi's GPIO pins, rather than a usb interface

    -Is recognizable as an audio device by alsa, showing…

  • RE: Two input ADAU1772?

    Hi Brian,

    The ADAU1761 or ADAU1781 might be good replacements. They are smaller, cheaper, have 2 channel I/O, and more audio processing power.