My question seems LTC4291-1 doesn't work well.
So I check the LTC4291-1 whether it is fail or ok by I2C read back.
I have tried to read the register by MCU I2C ,but it shows I2C not ack.(Please see the attached picture)
I have tried auto pin to high or low. but the result is same.
The gray waveform is I2C clock, The orange waveform is I2C SDA.
Please help me to get to next step.Is LTC4291-1 fail now?
Customer support is done through local FAE. Considered close.
the waveform is shows that I2C write the slave address (0x40), LTC4291-1 doesn't reply ack.
Question 1: I can read back the register by I2C that I don't care Auto pin is set to High or Low, is it? Or the Auto pin must set to Low then I can get to right I2C procedure.
Question 2: How can I make sure the LTC4291-1 that it works well? What are the check points?