SWO and Trace

lpcware — Wed, 15 Jun 2016 19:10:04 GMT

Content originally posted in LPCWare by MathiasP on Mon Apr 22 23:28:07 MST 2013

Hello,

I have a question regarding the LPC4357 debug features.

<strong>Extact from the user manual:</strong>

• The core frequency must be 120 MHz or lower to use the SWO function.
• The ETM trace capture speed is limited by the trace pin properties. The maximum
speed is 120 MHz when the EHS bit is set in the pin configuration register for the
multiplexed trace pins (Table 132).

<strong> My questions:</strong>

Does that mean I'm not able to use SWO when I'm running at full speed?

What about the ETM: Can use use it at full speed (204 MHz) and what does the limitation to 120 MHz mean in this case?

Best regards

Re: SWO and Trace

lpcware — Wed, 15 Jun 2016 19:10:05 GMT

Content originally posted in LPCWare by larsjep on Thu Oct 03 00:28:06 MST 2013
Hi,

I had exactly the same question.
Did you find an answer ?

Maybe someone from NXP could answer this question ?

Best regards
Lars

LPC MicrocontrollersのトピックSWO and Trace

SWO and Trace

Re: SWO and Trace