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ADSP-21992 SPORT

Question asked by luchino on Jun 16, 2016
Latest reply on Jul 5, 2016 by SachinV

I'm using the SPORT interface to connect two processor. The SPORT is configured in multichannel mode for a 256 bit frame, 16 word of 16 bits. Using DMA descriptor mode for Tx and Rx. It seems all work fine but:

 

  • If I disconnect and reconnect the interface (Hot plug-unplug) sometimes the communication restart but sometimes it stop work and I can restart it only cycling the power supply of the slave processor the one that is not generating the frame and the clock signals.
  • Sometimes I think for some electric disturbance appens what I describe above and the communication stop or it work with a bit shift in the slave reception. At this time I can only cycle the slave power.
  • I'm not sure but I think I have the same problem if I power the slave processor before the master.

 

Does anyone have some experiences on this matter?

 

Regards

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