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  • PCM1864-Q1: About power on reset timing diagram

    Resolved
    Part Number: PCM1864-Q1 Hello team, For the power-on reset timing diagram in PCM1864-Q1 datasheet, -. Could you please explain what the “REF Fast Boot” means? -. At the actual measurement below, the VREF’s behavior seems different from the…
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  • PCM1862: Change from PCM1864 - DOUT2 not working any more

    TI Thinks Resolved
    Part Number: PCM1862 Other Parts Discussed in Thread: PCM1864 , Hello, I changed from the PCM1864 to the PCM1862. Analog input pins 1L and 1R are used and muxed to the first Audio ADC, but both Digital outputs DOU and DOUT2 are used. When using the PCM1864…
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  • PCM1864-Q1: Question about antialiasing filter

    Resolved
    Part Number: PCM1864-Q1 Hi team, Would you please answer the following question? Regarding Antialiasing filter, the datasheet recommends 100ohm/0.01uF for single-ended and 47ohm/0.01uF for differential. This is about fc=160kHz. When considering audio…
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    • Answered

  • RE: PCM1864-Q1: In/out channel mapping

    Resolved
    Hi Ore, Thank you for confirming it. Best Regards, Sam Lee

  • PCM1864: Slave Mode: Dual PCM186x TDM Functionality

    TI Thinks Resolved
    Part Number: PCM1864 Hi expert, I'm using two pcm1864. I've a dsp that it is master of clocks and it generates MCLK, BCLK e LRCLK. That 3 clocks is connected to both pcm1864. The two 1864 are slave of clock with this connection: DSP_MCLK ----…

  • PCM1864: Interfacing with 280049

    TI Thinks Resolved
    Part Number: PCM1864 Hi, I would like to know the best possible way to interface PCM1864CMB with 280049C launch pad. I would like to complete the basic evaluation of the Circular Microphone Board with the DSP device. Thanks for your support.

  • PCM1864-Q1: Please review the schematic

    Part Number: PCM1864-Q1 Hello TI experts, my customer made their PCB with PCM1864-Q1. they found that there are many noise in the sound(voice) through microphone. so it is better to review the schematic first. Could you review it? microphone is connected…
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  • PCM1864: Analog input voltage

    Resolved
    Part Number: PCM1864 Hello, Our customer is struggling to meet analog input voltage specification. They placed voltage limiter at front-end amplifier however there is some variation of Vth, it bring high THD. Here is question, we know absolute max rating…
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  • RE: PCM1864: noisy output

    At this moment is there only 1 ADC and DSP on the Board? If poor layout is the cause then its best to turn off all other Chips and DC Supplies and Operate chip with a Bench Supply. Also is there a 22 ohm resistor in series with BCLK? You could also write…

  • PCM1864: Folding tone noise at TDM mode

    Part Number: PCM1864 Other Parts Discussed in Thread: PCM1690 , Hello, Our customer observed folding noise when input 35KHz 0dBFS at Fs=48KHz TDM mode. Here is FFT capture, we can see 13KHz -9dB spectrum. If change input signal level, folding noise level…

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