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LMK04832: error in reading product ID

David Park
Expert 6900 points
Part Number: LMK04832
Other Parts Discussed in Thread: USB2ANY

Hi,

There is reading error that read product ID to abnormal value through 3-wire SPI.

FPGA tried to read ID_PROD(0x004, 0x005).

Normal value 0xD1, 0x63 but read value is 0x10, 0xC0.

Green is SDIO, yellow is SCLK(5MHz), blue is CSn.

  • 0
    TI__Genius 11900 points

    Hello David,

    I believe you are using your own SPI interface and not the TI provided USB2ANY is this correct?

    I can see the clock cycles but it isn't extremely clear. Can you describe what the image is showing.

    For example, this is what it looks like to me. Is this correct?

    R/W = 1 => read

    A14-A0 =  000 0000 0000 0101 => R5

    D7-D0 = 1100 0000 => 0xC0

    Thanks,

    Vibhu