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MCU communicating to ADAU1701 through I2C

Question asked by JackieTan on May 29, 2013
Latest reply on May 29, 2013 by JackieTan

Hi Brett

 

With our project going on, we now removed the eeprom which the DSP boot up with it. We want download data into dsp trough I2C. We met problem with I2C read. Please see attached picture. We send 'write' firstly, you can see ACK. But when we send 'read' no ACK returned. How does it come? Thanks.

Jackie.

 

Maybe we insert a STOP after the write. We don't know if the STOP will cause the problem. We will try it tomorrow.

By the way, on page 24 of the datasheet, the waveform of I2C read maybe wrong. The chip address keeps 0.

I will post our finding tomorrow.

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