K60 USB Module - clock requirement

[rc]

I've done some searching in the forums and the help archives, but have not been able to confirm whether a 48MHz (or higher) clock is required to use the K60 USB module.

Currently I plan on using an 8MHz crystal for the system clock (EXTAL input on the K60), can I use this to internally generate the 48MHz required for USB?

[MVa · Accepted solution]

Hi,

  USB FS module requires 48 MHz clock. See chapter 5.7.7 USB FS OTG Controller clocking in the reference manual (or attached picture).

One possible clock setting of the CPU component is shown in attached screenshot.

Best Regards

MVa

[rcallagh]

Thanks!