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Altera_Forum
Honored Contributor I
697 Views

Controlling the Cyclone V clock

Hi, 

 

I have a Cyclone V demo board. There is a programmable clock on the board. The manual claims it "can be programmed through the clock control application in the examples/board_test_system directory." 

 

As always, there are n instructions on which code to use, or how to use it. 

 

Has anyone out there done this, and could you please share your knowledge. 

 

Thank you, 

Fly_Guy
0 Kudos
2 Replies
Altera_Forum
Honored Contributor I
7 Views

I have done the clock frequency change previously with other board ie Stratix V. You can install the development kit software and also the same Quartus II version. Then open the Clock control software from the development kit installation. Look for the specific oscillator and change the clock frequency. Only programmable oscillator can be changed frequency. You can try to see if this helps.

Altera_Forum
Honored Contributor I
7 Views

One thing to take note is that the frequency changed will reset to default after the board power cycle. You might need to set the frequency again after power cycle. You can use the clock control application to check the current frequency.