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I2C on TPS65070

Boris Ruvinsky
Expert 1410 points
Other Parts Discussed in Thread: OMAPL138, TPS65070

Dear E2E:

Thank you for your help.

We use TPS65070 with OMAPL138 in our avionics system.

In general everything is working OK.

But sometimes after several hours of normal operation - I2C interface between TPS65070 and OMAPL138 gets locked up.

The normal operation can be continued only after OMAPL138 reset.

I checked the latest OMAPL138 Errata - there is nothing about I2C0 interface.

TPS65070 has no Errata on this matter.

Do you know - what can cause I2C0 lock-up?

Do you know if somebody else experienced the same problem with I2C0 interface between TPS65070 and OMAPL138?

Thank you for your help,

Boris Ruvinsky 

  • 0
    TI__Genius 16870 points

    Hi Boris, 

    There are no reoccurring issues known so far on I2C interface for the TPS65070.

    1. Can you describe your error in further detail?
    2. What are the signals at the point of failure? 
    3. Can you capture scope shots of the the failure? - (before, during and after the lock up)