AnsweredAssumed Answered

K65/66 180MHz

Question asked by Adrian Rockall on Apr 15, 2016
Latest reply on Apr 18, 2016 by Adrian Rockall

Hi,

 

I am trying to get the K66 to run at 180MHz but it is not playing fair. I have also tried on the TWR-K65F180 board with the same problems.

I am using KDS3 PEx and KSDK1.3 to configure the clocks and running a project that it created. The code gets into SystemInit but the board resets when it switches to the PLL clock. If I select a PLL / system clock of 172MHz both my board and the TWR run fine but any higher and they fail.

I have configured all the other clocks in PEx to ensure they are in range for the requested clock.

The second issue is when the USB UTMI PHY PLL is enabled the code hangs waiting for the PLL to stabilise. I'm not sure if the two problems are related.

 

Is there a known problem with PEx generated clock initialisation code or the processors ability to run at 180MHz?

 

Best regards,

Adrian.

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