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MPC5676R eDMA initialization

Question asked by Sangwon Jeon on Nov 17, 2016
Latest reply on Nov 18, 2016 by David Tosenovjan

Hi NXP,

I am using MPC5676r Platform, and I have questions regarding register SADDR and DADDR of unused EDMA_A.TCD

EDMA_A.TCD[xx].SADDR
EDMA_A.TCD[xx].DADDR

 

During repeated testing of Power on/off of many control boards containing MPC5676r, I have found that external bus memory address is stored in SADDR and DADDR registers. This occurs to particular control board and occrs 80% of the time

 

 

Why does this occrus because I have not initialize the unused EDMA_A chennel. Or is it possible this could be hardware issue? 

 

why does this occurs to the particular control boards and not the other control boards? 

 

Hope helps and Thanks in advance

 

Best Regards,

Will

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