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  • PCM1780: Output wave form issue

    TI Thinks Resolved
    Part Number: PCM1780 Tool/software: Dear Expert, A customer is sending triangulated data from FPGA to PCM1780. It's 24bit data per channel with the sequence 24'h7F_FFFF~24'h00_0000,24'hFF_FFFF~24'h80_0000~24'hFF_FFFF,24'h00_0000~24'h7F_FFFF.... that…

  • PCM1780: Linux driver for pcm1780.

    Part Number: PCM1780 Hi Team, Can the pcm179x Linux driver be used for the pcm1780? snd-soc-pcm179x-codec-objs := pcm179x.o snd-soc-pcm179x-spi-objs := pcm179x-spi.o Do I need to customize the driver source code to recognize the device in the Linux…
    • Answered

  • PCM1780: out of band noise when implimenting the upsampling from 44.1kHz to 88.2kHz.

    Resolved
    Part Number: PCM1780 Hi team, My customer plans to change the sampling frequency from 44.1kHz to 88.2kHz. Does this change improve the out of band noise? My customer would like to reduce the out of band noise. Best regards, Shunsuke Yamamoto
    • Resolved
    • Answered

  • PCM1780: Difference between PCM1780 and PCM1753

    Resolved
    Part Number: PCM1780 Other Parts Discussed in Thread: PCM1753 , Hi, Could you please tell me the difference between PCM1780 and PCM1753? According to both data sheet, tt seems that there is no big difference in electrical characteristics. Best regards…
    • Resolved
    • Answered

  • PCM1780: About the device tree .

    Resolved
    Part Number: PCM1780 Hi Team, I'm working on pcm1780 on a Linux platform. I've customized the pcm179x Linux driver and tried a prototype driver. (The driver is not perfect.) The pcm1780 is connected to SAI1 and SPI1 of STM32MP157. [ 3.612164…
    • Resolved
    • Answered

  • PCM1780: Difference between PCM1780 and PCM1782

    Resolved
    Part Number: PCM1780 Other Parts Discussed in Thread: PCM1782 , , PCM1753 , PCM1755 Hi, Could you please tell me the difference between PCM1780 and PCM1782? According to PCM1780/1/2 data sheet, it seems that PCM1782 has only the open-drain output zero…
    • Resolved

  • PCM1780: PCM1780 MC/MD Internal Pull-down Resistor

    TI Thinks Resolved
    Part Number: PCM1780 Hi I have just got customer questions on the internal pull-down resistance of MC/MD pins of PCM1780. Refering to below specs in datasheet, I have found that those two pins are "schmitt-trigger input" and "pulldown". May I understand…
    • Answered

  • PCM1780: Delay time for sharp rolloff

    Resolved
    Part Number: PCM1780 Hi team, This device specify delay time for slow rolloff as 20/fs but it is not specified for sharp rolloff. Do you have a specification? Also I want to know the specification for PCM175x. Best regards, Koyo
    • Resolved
    • Answered

  • PCM1780: Unused MC, MD, /MS pin

    Resolved
    Part Number: PCM1780 Hi, If I don't use MC, MD, /MS pins, can I leave these pins floating? Best Regards, Kuramochi
    • Resolved
    • Answered

  • PCM1780: Cut-off frequency of output filter

    Resolved
    Part Number: PCM1780 Hi, How should the cut-off frequency of output filter be designed generally on Fs = 44.1kHz condition? It can be selected 54kHz or 108kHz on the EVM. According to the following page, it is half of the sampling frequency. …
    • Resolved

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