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Altera_Forum
Honored Contributor I
974 Views

Arria V, ARM Cortex-A9 clock speed (the -3 version)

I have an industrial application that is forcing me to use the -3 core speed. 

 

 

With that said I am trying to decrease the overall core speed of the ARM cores. 

I see they are at 1GHz (as a -3 selection) and am looking to try and decrease them to around 500MHz to save power. 

Is this possible? 

 

 

 

I have been searching for various multiplier, clock speed sections and have come up short in manuals, forums, etc. 

 

The goal is to get this Arria V to be as power lean as possible. 

Thank you.
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Altera_Forum
Honored Contributor I
53 Views

Altera_Forum
Honored Contributor I
53 Views

Alternatively, you can let Qsys handle this for you. When you instantiate the HPS Component in Qsys, uncheck "Use default MPU clock frequency" and set the value that you desire. Then, regenerate the preloder to ensure that the latest Qsys setting carries over to the software portion

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