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Issue about SSI on i.MX6

Question asked by Zongbiao Liao on Feb 27, 2017
Latest reply on Feb 28, 2017 by igorpadykov

Hello Community


My customer has a problem about audio playing on i.MX6DL(With YoctoBSP 4.1.15_1.2.0).

Sometimes when it is playing an audio file, SSI becomes hangup and no sound outputs. 

Registers of SSI(SSI3 is used) in normal case and abnormal case are as bellow(Left is abnormal and right is normal).

From the differences between abnormal and normal, it seems that there is no data in transmit FIFO when it became abnormal.


And registers of AUDMUX are the same.


And my customer measured the waveform of  AUD_TXC, AUD_TXFS and AUD_TXD,it seems that it is no problem in abnormal case.(Above is normal and bellow is abnormal)


Could you give me some advice?


Best Regards