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Linux/DS90UB954-Q1: i2c detect issue

Part Number: DS90UB954-Q1

Tool/software: Linux

Hi All,

We are connect 25Mhz crystal oscillator on xin,xout. 

pdb pin is high as per power up sequence.

idx is configure as 0x3d

Both uboot and user-space i2cdetect utility can't detect the deserialiser.

The i2c bus is fine (another i2c device detected on same bus).

From Host sending the probe date but device doesn't response back?

Regards,

RAJ M

  • Hi Raj,

    Sorry for the delay in getting back to you!

    Can you tell me a little more about your setup? How have you verified that the 954 is powered correctly?

    What pull-up resistors are you using for the I2C pins on the 954?

    Regards,

    Zoe