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DS90UB948-Q1: Does it support I2S DIN and DOUT?

Jerry Chu
Genius 4915 points
Part Number: DS90UB948-Q1

Hi Expert,

My project will choose digital MIC in panel side, can I connector the DMIC to DS90UB948?

Because the datasheet shows the I2S supports Dout. Thanks!

  • 0
    TI__Mastermind 30515 points
    Jerry,
    No, please see d/s description.

    SLAVE MODE LOCAL I2S CHANNEL PINS (Pin function programmed through register) - Layout note: for unused I2S outputs, tie
    to an external pulldown
    I2S_WC
    (GPIO7_REG)
    14 Multi-function
    pin
    O, LVCMOS
    Slave Mode I2S Word Clock Output.
    (Pin is shared with GPIO7_REG)
    I2S_CLK
    (GPIO8_REG)
    13 Multi-function
    pin
    O, LVCMOS
    Slave Mode I2S Clock Output.
    (Pin is shared with GPIO8_REG)
    I2S_DA
    (GPIO6_REG)
    12 Multi-function
    pin
    O, LVCMOS
    Slave Mode I2S Data Output.
    (Pin is shared with GPIO6_REG)
    I2S_DB
    (GPIO5_REG)
    11 Multi-function
    pin
    O, LVCMOS
    Slave Mode I2S Data Output.
    (Pin is shared with GPIO5_REG)
    I2S_DC
    (GPIO2_REG)
    10 Multi-function
    pin
    O, LVCMOS
    Slave Mode I2S Data Output.
    (Pin is shared with GPIO2)
    I2S_DD
    (GPIO3_REG)
    9 Multi-function
    pin
    O, LVCMOS
    Slave Mode I2S Data Output.
    (Pin is shared with GPIO3)
    MASTER MODE LOCAL I2S CHANNEL PINS (Pin function programmed through register) - Layout note: for unused GPIO(s), tie to
    an external pulldown
    SWC
    (GPIO1)
    8 Multi-function
    pin
    O, LVCMOS
    Master Mode I2S Word Clock Output.
    (Pin is shared with GPIO1)
    SDOUT
    (GPIO0)
    7 Multi-function
    pin
    O, LVCMOS
    Master Mode I2S Data Output.
    (Pin is shared with GPIO0)
    MCLK
    (GPIO9)
    15 Multi-function
    pin
    O, LVCMOS
    Master Mode I2S System Clock Output.
    (Pin is shared with GPIO9)


    best regards,
    Steven
  • 0 in reply to Steven(Shenzhen) Shi
    Prodigy 20 points

    Hi!

    Can i join topic?

    We are going to use DS90UB948 in conjunction with D-class power amp. TAS5760.

    It demands:

    MCLK- master clock

    SCLK- bit clock

    LRCK- Word Select Clock

    SDIN- Data Line

    So, we suggest, that we have to use pins of Deserializer in a such way:

    DS90UB948 |  TAS5760

    1. MCLK      to MCLK

    2. I2S_CLK to SCLK 

    3. SWC       to LRCK

    4. SDOUT   to SDIN

    So, i see, that we have pins, that is a master or slave mode.

    As i understand- MCLK and SDOUT generates signal all the time, independently of master/slave mode.

    But we need to use I2S_WC and I2S_CLK.  So we need to activate them through register and use together with the master pins?

    Thank you for attention.

  • 0 in reply to Alexander Drobyshev
    TI__Genius 10475 points
    Hello Alexander,
    Please create a new E2E thread for your question so it can be addressed properly by the right expert.