RT1064: does SWO trace need external component?

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RT1064: does SWO trace need external component?

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Contributor II

For RT1064, I would like to use the SWO trace function, located on pin GPIO_AD_B0_10.  Does this require any external component such as pull-up or pull-down resistor?  I do not see this information anywhere in RT1064 documentation.


The reason I ask is because on RT1064 EVK, GPIO_AD_B0_10 is used as an interrupt signal for Ethernet (net "ENET_INT") which has a 1k pull-up resistor on it.

Regards,

Jason

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NXP Employee
NXP Employee

Hello Jason,

Hope you are doing well.

You may refer to this document for debug considerations. For the SWO you must use a pull-up for better performance. 

Design-Considerations-for-Debug

Best Regards,

Sabina