Latency Measurement

Could anyone show me an idea how to measure the latency of ZYNQ-7000 chip (MicroZed board)?In particular, I am trying to measure how many clock cycles it takes to read/write a register on PL from PS, and how many clock cycles to access On-chip memory and external memory DDR.

I tried a private timer in SDK but I am not confident with the results. Is there any approach from hardware perspective that I can measure the latency

0 drozwood90 over 10 years ago

Hi tmco,

There is a very functional working MEMORY test in Lab 6 of the Hardware Speedway Training. It might be able to be used as is or adapted for your needs.
If you go here:
http://microzed.org/support/trainings-and-videos
Then click on the link for
Developing Zynqu00AE-7000 AP SoC Hardware
You will see a download link for the labs:
"Download the labs"
Extract that to a folder, then extract the "ZynqHW_MicroZed_v03_student" (for Microzed)
Finally, under ZynqHW2013_3Solutions extract the ZynqHW_Lab6_Solution.zip
You are looking for the "Memory_Tester" program and associated files.

--Dan
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