• ADAU1467 booting 3 x AD1937 codec's

    Hi there,

    I'm working on a design with a central ADAU1467 DSP connected to 3 x AD1937 codecs so I can have 4 x balanced audio (mic/line) inputs and 24 balanced audio outputs.  I'm at the stage of considering the control.  I like how on the EVAL…

  • ADAU1467 - ASRC bit depth limitation?

    As per https://ez.analog.com/dsp/sigmadsp/f/q-a/536557/adau1452-asrc-can-it-work-on-32-bit-audio, the ADAU1452 has ASRCs which are limited to 24 bits in hardware. Is there such a restriction in the ADAU1467? I could not find any mention of supported formats…

  • ADAU1467 Jitter on CLKOUT and BCLK

    Hey together,

    We have a problem with some jitter on CLKOUT pin as well as the BCLK pins on our ADAU1467. We supply our MCLK by a 24.576MHz oscillator. Please see the measurement of the 24.576MHz below:

    As you can see the clock signal is very stable and…

  • 3 x TDM8 inputs to ADAU1467

    Hi there,

    I have a Multichannel USB streamer device that I wish to use to send 24 channels of digital audio to an ADAU1467, utilising 3 x TDM8 lines.

    Therefore, I am hoping to just use Serial Inputs 0, 1 & 2 to receive the 3 x TDM8 streams.

    The USB…

  • ADAU1467 SDATAIOx problem

    Hi,

    I have a project that needs to use SDATAIOx of ADAU1467 to expand four I2S inputs. I can't use SDATA_IN0/1/2/3. Because my project has decode board (4 I2S inputs), Bluetooth (1 I2S input), ADC (2 I2S inputs).

    According to the datasheet of ADAU1467…

  • RE: EVAL-ADAU1467 termination resistors for SDATA_IN# lines?

    At these speeds, true impedance matching isn't necessary. It's common practice to use a termination resistor only at the sending end of the trace. Since SDATA_INx are inputs, you'll find the termination resistors close to the source rather than there…

  • RE: ADAU1467 seflboot EEPROM programming

    Hello aytil,

    The only way to get to the EEPROM is through the DSP. I will detail some ways to solve this problem:

    Some customers have setup hardware with switches to connect the USBi connection from the slave port over to the EEPROM for this purpose…

  • RE: ADAU1467 using aux adc for volume

    Yes, that would be a good test. This would show if it is changing volume up and down over and over again but it switches so fast that it never gets very far so it is not easily heard but you may pick it up with a THD analyzer but looking at a very low…

  • ADAU1467 ASRC

    Have noted that its possible to use sample rates higher that 192k as input to the asrc, for example 384k. Have tested it on the adau1467 eval board. The ASRC0_RATIO register 0xF582 correctly responds that the ratio is 8 (384/48). When I read the data…

  • ADAU1467 Self-Boot programming

    After reading through the ADAU1467 datasheet and the documentation for the evaluation board I have a question regarding the Master/Slave SPI/I2C ports.

    For initial development and testing of the audio processing program I want to use the USBi programmer…