Daisy chain SWD and JTAG

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Daisy chain SWD and JTAG

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andrewmain
Contributor I

Can you daisy chain SWD and JTAG?

I was going to daisy chain a K10, Xilinx, and Xilinx PROM... However I now also want a KL05 on the board too.  So I would have SWD going to the KL05, and JTAG going to the other chips.  Obviously I could use SWD on the K10 instead of JTAG, but I have no experience of this.

I just want the minimum amount of connections on this board. any recommendations?

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Paul_Tian
NXP Employee
NXP Employee

Hi, Andraw

As I know, KL series SWD debug interface does not support daisy chain. So I think you cannot use one SWD interface for debug both K10 and KL05.

Hope my reply can help you.

Best Regards

Paul

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jeremyzhou
NXP Employee
NXP Employee

Hi Andrew,

Debug inferface for K series and L series is very similarly which have described in the KQRUG and KLQRUG.

I've also included the the KQRUG and KLQRUG with reply. I think it should be useful for reference.

I wish my support could help and if youhave any questions, please feel free to contact with me.

Best regards,

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