What is the default value for PLLON ? If it is 0, should I put a while(PLLRDY =1）?

[Msee]

I have an application running on HSE as system clock..and I set the multiplexer to select HSE, totally not using PLL

btw, should I put any configuration to my PLL?

such as PLLON =0, and while(PLLRDY==1) , to “properly configure�? the unused PLL?

Or should I just leave it as what it is by default?

best regards,

mike

[waclawek.jan]

By default it is off, so just leave it as it is.

JW

[Tesla DeLorean]

You would need for it to be off to reconfigure it. And the processor needs to be clocked from a source that is running.​

[Msee]

Hi Tesla,

Thanks for the reply.

It is agreeable to turn PLL off properly, by putting "PLLON =0; while(PLLRDY==1) ", If one wishes to "RE-CONFIGURE" the PLL setting.

But if I don't intend to use PLL at all right from the startup, is "PLLON =0; while(PLLRDY==1)" omittable?

Best Regards,

Mike