Other Parts Discussed in Thread: TAS5805
Dear TI staff,
Referring to TAS5805M datasheet in section 9.5.3.1 about startup procedures, it defined that I2S clock must be stable before enabling I2C control in step-4. We are confusing about this description. Can you help to clarify some questions below?
1. I2S clocks must be ready before I2C control is hard requirement or not?
2. Is there any correlation between I2C and I2S in silicon design?
3. If this procedure be reversed, any side effect will be appeared?
Due to our platform use dual OS (Linux and Little Kernel) separately and no inter communication between each other. So I2C will be start up first and I2S will be valid once audio signals available. At this situation, we encountered no sound output from amplifiers randomly (I2C configuration successfully and I2S clock / data are well) and could be recovered by power cycling only. Please let us know what your comment is about this symptom. Thanks.
Regards,
Jones