probing internal signal

[hasssanadeli]

Hello, 

I have an internal signal of 28 bits with 16 bits fraction, and I want to see its waveform. I was wondering how I could see this whole bit of signal continuously. I tried the signal tap analyzer but it is showing a few samples and the Signal Probe pin also can show one bit of this 28-bit signal. 

Thanks,

Majid

[sstrell]

If this is a high speed internal signal, you can't view it "live" unless you bring all the signals out to a bench oscilloscope or other suitable equipment.  As noted, Signal Tap takes a snapshot based on a trigger you set up.  Signal Probe only brings out one signal at a time.  You could use In-System Sources & Probes (ISSP) but that only updates at the speed of the JTAG clock, so using it for a high speed signal is out of the question.

If you need to look at this whole bus live, use the LAI (Logic Analyzer Interface) tool to bring the whole bus out of the device.

[hasssanadeli]

Thanks for your response. Could you please give me some references and links for ISSP and LAI?

[sstrell]

Always check the user guides:

https://www.intel.com/content/www/us/en/support/programmable/support-resources/design-software/user-guides.html

And the debug guide in particular:

https://www.intel.com/content/www/us/en/docs/programmable/683819/23-4/faq.html

[ShengN_Intel]

Hi Majid,

Do you have any further concern or consideration?

Thanks,

Best Regards,

Sheng

[hasssanadeli]

Thank you all for helping! 

Thanks,