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ADAU1381 - hangs after the settings have been loaded

Question asked by Belenie on Mar 27, 2015



My customer was able to get the DSP to accept the settings from Sigma Studio by manually creating the header files. 

Now he has a new issue:


About 30% of the time thew DSP seems to just hang after the settings have been loaded and the sound-engine run bit has been set. They just get constant values out of the i2s bus.

Is there specific timing for loading the settings/starting up the DSP?

The only info he could find in the data sheet was regarding power down/standby procedures.

(he is using the same sequence produced by sigma studio)

When they  bypass the DSP they don’t see any issues.

Thanks for your help,