Why ADSP-BF706 EZ-Kit Audio Test from POST always fails

Question

Hello, 
 I wonder if anyone here figured out why the Audio Test always fails in ADSP-BF706 EZ-Kit Power-On Self-Test (POST) sample project? 
 When running this Audio Test, it always fails. 
 Please help me to understand: 
 
 Why does Audio Test always fail? 
 What are the reasons that it fails? 
 Is it the problem of CODEC data output? 
 Or is it the problem due to library functions in calculation algorithm?

Thank you for your help!

santha.vijay · Accepted Answer

Hello Min, 
 Apologies for the inconvenience caused. We had already recorded this issue in our bug tracking database. 
 We added this patch in the pc that we tested here. So it works fine in our side. 
 The ADAU1761 codec driver when using adi_sport_ConfigClock() with the bFallingEdge parameter being incorrectly true. A bug whereby the bFallingEdge parameter was not being handled correctly, and this triggered the problems with the ADAU1761 driver examples you have encountered. 
 We have a patch for you to apply to adi_adau1761.c at C:\Analog Devices\Audio_EI3_Extender_Board-Rel1.1.0\Audio_EI3\Blackfin\src\drivers\codec\adau1761\ 
 For the two calls of adi_sport_ConfigClock() replace the fourth parameter (true,) in each with: 
 #if __CCESVERSION__ >= 0x02040000 false, /* CCES-11151 fixed */ #else true, /* passing true compensates for CCES-11151 */ #endif 
 Can you please replace the codec driver with the attached one in the below installation path and let us the results. 
 <installation_path>\Analog Devices\ADSP-BF706_EZ-KIT_Mini-Rel1.1.0\BF706_EZ-Kit_MINI\Blackfin\src\drivers\codec\adau1761 
 Best Regards, 
 Santhakumari.K 
 8345.adi_adau1761.zip)

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Why ADSP-BF706 EZ-Kit Audio Test from POST always fails