[PIC] unable to use PLL for FRC

[Raady Here]

PIC24FJ128GC006
MPLAB 8.8V

Manual DS30009312B-page 406

HI,

I trying to develop a module for USB and I need to use PLL to make internal oscillator to 48 MHZ.

for this i need to access CW4<13:10> , I dont find CW4 register and hence gives an error !

so what can I do , help required !

 

[ud23]

https://ww1.microchip.com/downloads/en/DeviceDoc/39700c.pdf

 

[Aussie Susan]

The CW4 is set using the configuration setup. Depending on your compiler, you may need to use #pragma directives or _CONFIGx macros or similar.
When you say you want to make the internal oscillator 48MHz, I assume this is only for the USB clock. The CPU itself can only take a maximum 32MHz clock (see Figure 37-1 in the data sheet).
Susan